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Toyota1997–2022 Critical issues documented

Toyota Harrier: common faults & what to check

Thinking about buying a used Toyota Harrier (1997–2022) in New Zealand? We've documented 26 known faults for this model spanning engine, electrical, cooling, and suspension. Each researched and verified before it's published. The most serious issues here are rated critical. Every one is listed below with its symptoms and repair cost, and each has its own page with where to look and what to ask the seller. Free, no account needed.

Check this exact Toyota Harrier

  • Odometer history
  • Money owing
  • Reported stolen
  • Ownership history
  • Official NZ vehicle register data
  • NZ owned and operated

Type the plate for the free basics. The full record is a paid check from $13.49, one car at a time, no subscription.

No NZ plate yet, or buying in Australia? Pick the generation and engine and start a free check below. New to KickTyres? How the check works →

26

Documented faults

Critical

Most serious

$450–$1,500

Typical repair

53

Service milestones

Which Toyota Harrier are you looking at?

7 generation variants documented. Pick the shape you recognise: the faults, the servicing and the timeline below all narrow to it. Free, no account needed.

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

Start your free check on this Toyota Harrier

No plate needed. You get the risk score, the buyer's checklist and the guided inspection for the exact car you picked above — not the whole nameplate.

Toyota HarrierEngine not picked yet

Pick the engine above first: the Harrier came with 5, and without it the report has to show all of their faults. Pick the engine

Free. The paid plate check is separate, and stays optional.

Can't confirm for this car

Toyota Harrier

Nothing has been narrowed yet, so nothing below is a claim about a particular car. Pick a year and an engine to see which faults apply.

Tell us the engine, or check the engine code on the car, before relying on this.

matched on no vehicle context

What to look out for

The checks worth doing on a Toyota Harrier before you hand over any money. Every documented fault is listed below, each with its own page.

  • Serious issue

    Pull the dipstick and check for tar-like consistency.

    See why

    1MZ-FE Engine Oil Sludge and Bearing Failure

    The 1MZ-FE 3.0 V6 is prone to severe internal oil sludge accumulation when oil change intervals exceed 5,000 km or conventional oil is used. Sludge blocks the narrow oil galleries feeding the main and rod bearings and camshaft journals, starving them of lubrication. Toyota acknowledged the issue via Special Service Policy EG007-02 in 2002, which extended warranty coverage for sludge-related engine failures. Bearing knock, spun bearings, and camshaft seizure are the terminal outcomes. The MCU10/MCU15 Harrier shares this engine with the RX300 and Camry of the same era, all of which exhibit identical sludge profiles.

    What you would notice

    • Low oil pressure warning light illuminating at idle or under load
    • Rhythmic knocking or rattling from the engine on cold start that may diminish once warm
    • Visible sludge deposits inside the valve cover when filler cap is removed
    • Elevated oil consumption with no external leak found

    Typically $2,500–$8,500 to put right.

  • Serious issue

    Pull the dipstick before and after the test drive - low oil on a car being sold is a red flag.

    See why

    Excessive oil consumption - 2.4 2AZ-FE piston ring defect

    The 2.4-litre 2AZ-FE fitted to base XU30 Harriers is one of Toyota's best-documented problem engines: the oil control ring drain holes are too small, the rings gum up, and the engine starts burning oil heavily from around 120,000-180,000 km. Toyota acknowledged the defect in / and ran warranty enhancement ZE7 in the US (piston and ring replacement), but that program is long expired and never covered JDM Harriers. Left unchecked, a car burning a litre every 1,000 km can run its bearings and destroy the engine. The proper fix is new pistons and rings, which costs more than many XU30s are worth.

    What you would notice

    • Low oil level between services with no visible leaks
    • Blue smoke from the exhaust on startup or hard acceleration
    • Oil pressure warning light flickering on corners or braking
    • Spark plugs fouled with oil

    Typically $3,000–$5,500 to put right.

  • Serious issue

    Inspect both plastic end tanks for hairline cracks, particularly at the crimp seam and around hose connections.

    See why

    1MZ-FE radiator plastic end tank cracking

    The MCU15 Harrier (and Lexus RX300) uses a cross-flow aluminium core radiator with injection-moulded nylon-reinforced plastic end tanks crimped to the core with aluminium headers. After 15 or more years of thermal cycling between cold soak and 90°C operating temperature, the plastic end tanks develop stress cracks at the crimped joint and around the coolant hose inlet/outlet connections. Coolant loss follows, initially minor seeping that the overflow reservoir compensates for, then accelerating to visible dripping or rapid loss. Critically, these radiators also contain an integrated automatic transmission fluid cooler. If the end tank fails on the ATF cooler side and coolant pressure drops, coolant can enter the ATF circuit, causing the distinctive pink-milkshake ATF contamination that destroys the transmission if undetected.

    What you would notice

    • Coolant loss requiring regular top-up with no visible external leak when cold
    • Coolant drips or puddle under front of vehicle after shutdown
    • Overheating or temperature gauge climbing higher than normal
    • Pink or foamy appearance of automatic transmission fluid on dipstick
    • Visible crack or seepage at radiator end tank to core joint

    Typically $550–$1,900 to put right.

  • Serious issue

    With the wheel hanging freely, grip the tyre at 6 and 12 o'clock and check for vertical play in the ball joint.

    See why

    Front Lower Control Arm Ball Joint Wear

    The front lower control arm ball joints on the MCU10 and MCU15 Harrier are a high-wear item that degrades progressively with age and mileage, particularly on New Zealand roads. The ball joint carries combined lateral and vertical loads at the wheel hub and its rubber boot splits over time, allowing grease loss and water ingress that accelerates wear. Excessive radial play causes imprecise steering and is a common Warrant of Fitness failure point in NZ. In severe cases a failed ball joint can separate, causing sudden loss of steering and wheel collapse. Toyota specifies a maximum radial play tolerance and calls for replacement when exceeded; press-in replacement joints are available from Toyota and aftermarket suppliers.

    What you would notice

    • Clunking or knocking from the front suspension when going over speed bumps or rough surfaces
    • Vague or imprecise steering with the vehicle wandering on straight roads
    • Uneven or rapid tyre wear on the front axle
    • Warrant of Fitness rejection for excessive ball joint play

    Typically $350–$800 to put right.

  • Serious issue

    Get a hybrid-capable scan before buying: inverter fault history (codes like P0A94/P3004 family) is stored even after warnings clear.

    See why

    Hybrid inverter IPM failure - system shutdown (Harrier Hybrid MHU38)

    The Harrier Hybrid MHU38 is mechanically the Lexus RX400h, which was recalled (Lexus Safety Recall BLD) because transistors in the inverter's Intelligent Power Module were inadequately soldered and fail under heat during high-load driving. Failure lights up multiple dash warnings, forces limp mode, and can shut the hybrid system down completely while driving. The US recall never covered JDM Harriers, so imported cars carry the same defect with no factory remedy. Replacement inverters are expensive; used or repaired units are the realistic fix in NZ.

    What you would notice

    • Multiple warning lights (hybrid system, check engine, VSC) at once
    • Sudden loss of power / limp mode, especially under hard acceleration or towing
    • Car refuses to READY / start
    • Complete shutdown while driving

    Typically $2,000–$6,000 to put right.

  • Costly issue

    Check the coolant reservoir level and look for oil contamination or brownish tint.

    See why

    1MZ-FE Rear Cylinder Bank Head Gasket Seepage

    The rear cylinder bank (bank 2) head gasket on the 1MZ-FE is known to develop external coolant seepage and, in more advanced cases, combustion gas ingress into the cooling system. The V6 transverse mounting means the rear bank is deeply recessed against the firewall, making early seepage invisible during routine inspection. Coolant loss without any visible puddle under the car is the most common presentation. The fault is compounded by the sludge problem: degraded oil quality accelerates head gasket deterioration. Workshop manuals confirm the rear head gasket is a scheduled replacement item in high-mileage service documentation for this engine.

    What you would notice

    • Gradual coolant loss with no puddle found on the ground and no visible external leak
    • White or sweet-smelling exhaust smoke on startup, particularly when cold
    • Coolant reservoir showing oily film or brownish discolouration
    • Heater output fluctuating or declining due to air pockets in the cooling system

    Typically $1,800–$3,800 to put right.

Toyota Harrier service schedule

What falls due, and at what distance, for each generation of the Toyota Harrier. These are the model’s intervals — the car’s own service book is the only thing that can tell you what has actually been done to it.

Fourth Generation (XU80) · 2020–2026 · 2.5L A25A-FXS Hybrid E-Four AWD

Hybrid

Due by distance

  1. 50,000 km

    Get the hybrid battery health checked in full so you can see its State of Health percentage.

  2. 100,000 km

    The E-Four rear differential fluid should be checked or changed here to keep the drivetrain going long term.

  3. 150,000 km

    Around this distance the inverter and engine coolant circuits are reviewed to keep temperatures under control.

Fourth Generation (XU80) · 2020–2026 · 2.0L M20A-FKS I4 AWD

Petrol

Due by distance

  1. 100,000 km

    A transmission fluid flush for the Direct Shift-CVT here helps it last.

  2. 150,000 km

    Check the suspension bushes and shock absorbers for the wear NZ roads tend to cause.

  3. 200,000 km

    Assess the condition of the water pump and the serpentine belt assembly.

Fourth Generation (XU80) · 2020–2026 · 2.0L M20A-FKS I4 FWD

Petrol

Due by distance

  1. 40,000 km

    Check the transmission fluid and fit a fresh cabin air filter to keep the air inside pleasant.

  2. 80,000 km

    Your technician may want a closer look at the suspension bushings and a spark plug check around here.

  3. 100,000 km

    This is where a full cooling system check and a close look at the auxiliary drive belt start to matter.

Third Generation (XU60) · 2017–2020 · 2.0L 8AR-FTS Turbo I4 AWD

Petrol

Due by distance

  1. 100,000 km

    Have the cooling system gone over thoroughly and confirm the transmission fluid has been serviced.

  2. 150,000 km

    Check the suspension struts and any outer drive belts for cracking.

  3. 200,000 km

    Assess the turbocharger and look for the carbon build-up that direct-injection engines tend to get.

Third Generation (XU60) · 2017–2020 · 2.0L 8AR-FTS Turbo I4 FWD

Petrol

Due by distance

  1. 100,000 km

    Flush the transmission fluid and inspect the spark plugs; this direct-injection turbo runs best on fresh parts.

  2. 150,000 km

    Have the water pump and thermostat checked professionally so the car does not overheat come summer.

  3. 200,000 km

    Suspension dampers and steering rack boots need a close look, as they often reach the end of their intended life about here.

Third Generation (XU60) · 2014–2020 · 2.5L 2AR-FXE Hybrid AWD

Hybrid

Due by distance

  1. 100,000 km

    Give the hybrid drive inverter coolant and the 12V auxiliary battery a proper look over.

  2. 150,000 km

    A good window for new platinum-tipped spark plugs and possibly fresh transmission fluid, even though the manual treats the unit as sealed.

  3. 200,000 km

    Worth checking how much capacity the hybrid battery pack still has, since nickel-metal hydride packs naturally lose some over time.

Third Generation (XU60) · 2013–2020 · 2.0L 3ZR-FAE I4 AWD

Petrol

Due by distance

  1. 100,000 km

    Swap the transmission fluid using genuine Toyota fluid, which helps the CVT belt mechanism last.

  2. 150,000 km

    Sensible point to have the suspension bushings and struts checked for age, since NZ road surfaces are hard on them.

  3. 200,000 km

    Check the cooling system hoses and water pump so the engine keeps running at the right temperature.

Third Generation (XU60) · 2013–2020 · 2.0L 3ZR-FAE I4 FWD

Petrol

Due by distance

  1. 100,000 km

    Check the drive belt and make sure the CVT fluid has been assessed.

  2. 150,000 km

    Check the suspension bushings and how well the shock absorbers are damping, as NZ's winding roads wear them faster.

  3. 200,000 km

    Give the cooling system a full check, including the coolant hoses and the radiator.

Second Generation (XU30) · 2006–2013 · 3.5L 2GR-FE V6 FWD

Petrol

Due by distance

  1. 100,000 km

    If there is no record of it, have the transmission fluid fully serviced.

  2. 150,000 km

    Keep an eye on the suspension bushes and engine mounts, which often soften by this stage.

  3. 200,000 km

    Check the alternator and starter motor, as both have done a lot of work by now.

Second Generation (XU30) · 2006–2013 · 3.5L 2GR-FE V6 AWD

Petrol

Due by distance

  1. 150,000 km

    Check the suspension bushings and engine mounts for signs of fatigue.

  2. 200,000 km

    Check the cooling system, radiator and hoses included, so the car stays dependable.

  3. 250,000 km

    Have a professional scan the electronic modules to make sure no old fault codes are still sitting there.

Second Generation (XU30) · 2005–2012 · 3.3L 3MZ-FE Hybrid V6 E-Four

Hybrid

Due by distance

  1. 150,000 km

    Suspension bushings and struts often start feeling a bit tired by this stage.

  2. 200,000 km

    Check the hybrid battery cooling fan filter for dust build-up, which helps the pack last.

  3. 250,000 km

    Check the auxiliary pulleys and water pump for weeping or noise.

Second Generation (XU30) · 2003–2013 · 2.4L 2AZ-FE I4 AWD

Petrol

Due by distance

  1. 150,000 km

    Refresh the cooling system, radiator hoses and thermostat included, to head off the overheating older cars are prone to.

  2. 200,000 km

    Check the alternator and starter motor, since these electrical parts often reach the end of their intended life around here.

  3. 250,000 km

    Turn attention to the suspension, struts and mounts included, to keep the car as comfortable as it should be.

Second Generation (XU30) · 2003–2006 · 3.0L 1MZ-FE V6 AWD

Petrol

Due by distance

  1. 150,000 km

    Confirm the timing belt has been replaced, because the 1MZ-FE is an interference engine.

  2. 200,000 km

    Check the cooling system hoses and the radiator for brittleness or general age.

  3. 250,000 km

    Attention moves to suspension parts such as strut mounts and stabiliser links, which may be near the end of their life.

Second Generation (XU30) · 2003–2006 · 3.0L 1MZ-FE V6 FWD

Petrol

Due by distance

  1. 150,000 km

    Confirm the timing belt and water pump have been replaced, as the 1MZ-FE is an interference design.

  2. 200,000 km

    Give the cooling system a full inspection, including radiator hoses and the thermostat housing.

  3. 250,000 km

    By here the suspension dampers have probably gone soft, which takes the edge off the original plush ride.

Second Generation (XU30) · 2003–2013 · 2.4L 2AZ-FE I4 FWD

Petrol

Due by distance

  1. 150,000 km

    Make sure the transmission fluid has been refreshed so the shifts stay smooth.

  2. 200,000 km

    Check the alternator and starter motor so your daily driving stays trouble free.

First Generation (XU10) · 2000–2003 · 3.0L 1MZ-FE V6 AWD

Petrol

Due by distance

  1. 150,000 km

    This is the second timing belt interval; check the water pump was done at the same time.

  2. 200,000 km

    A full suspension refresh may be due, as bushings and struts often show wear by now.

  3. 250,000 km

    Turn attention to the cooling system, including the radiator hoses and thermostat.

First Generation (XU10) · 2000–2001 · 2.2L 5S-FE I4 FWD

Petrol

Due by distance

  1. 150,000 km

    Make sure the timing belt has been replaced; this is an interference engine.

  2. 200,000 km

    Refresh the cooling system including the thermostat and radiator hoses to keep it dependable.

  3. 250,000 km

    Check the suspension bushings and shock absorbers, which are well into their service life by this point.

First Generation (XU10) · 2000–2003 · 3.0L 1MZ-FE V6 FWD

Petrol

Due by distance

  1. 150,000 km

    Check the cooling system hoses and the radiator are still in good shape.

  2. 200,000 km

    A likely point for the second or third timing belt service, as the 1MZ-FE is an interference engine.

  3. 250,000 km

    Start budgeting for the alternator and starter motor, which may not have much life left.

See all 26 documented issuesEverything researched for the Toyota Harrier, including 6 rated critical.
Depends on which engine this Toyota Harrier has — 26Each of these is documented for one particular engine. Pick the year and engine above to see which of them apply.
Engine, transmission & cooling12

011MZ-FE Engine Oil Sludge and Bearing Failure

Pull the dipstick and check for tar-like consistency.petrol1997–2003EngineRead the full fault: symptoms, where to look, what to ask the seller

02Excessive oil consumption - 2.4 2AZ-FE piston ring defect

Pull the dipstick before and after the test drive - low oil on a car being sold is a red flag.petrol2003–2012EngineRead the full fault: symptoms, where to look, what to ask the seller

031MZ-FE radiator plastic end tank cracking

Inspect both plastic end tanks for hairline cracks, particularly at the crimp seam and around hose connections.petrol1997–2003CoolingRead the full fault: symptoms, where to look, what to ask the seller

04CVT (K114/K115) shudder and failure on 2.0 petrol XU60

On the test drive, do several gentle take-offs from a complete stop and feel for shudder through the floor.petrol2013–2020Transmission
OccasionalTransmission $1,500–$6,000 to fix

Can't confirm for this car

The 2.0 non-turbo XU60 Harrier drives through a K114/K115 belt-type CVT, and owner forums in CVT-heavy import markets report shudder, judder on take-off, whine and outright failures, with used-import examples considered fragile when the fluid has never been changed. Toyota calls the fluid 'lifetime' but specialists recommend CVT-fluid changes every 40,000-60,000 km; a neglected unit that starts shuddering usually needs a valve body, overhaul or replacement CVT, which is a $3,000-6,000 job in NZ (used replacement units are cheaper but a gamble).

Symptoms to notice

  • Shudder or vibration pulling away from a stop
  • Whining or droning that rises with road speed
  • Revs flaring without matching acceleration
  • Delayed or clunky engagement selecting Drive or Reverse

What to check

On the test drive, do several gentle take-offs from a complete stop and feel for shudder through the floor. Accelerate steadily and confirm revs and speed rise together without flare. Listen for whine at constant speed. Ask when the CVT fluid was last changed - 'it's sealed for life' from a seller means never.

Where to look: CVT transmission bolted to the engine, front of the car; fluid condition checked from underneath

Parts involved: Mechatronic / valve body, Turbocharger.

Ask the seller

  • “Has the CVT fluid ever been changed, and is there an invoice?”
  • “Any shudder or vibration when pulling away?”
  • “Has the transmission ever been repaired or replaced?”

051MZ-FE Rear Cylinder Bank Head Gasket Seepage

Check the coolant reservoir level and look for oil contamination or brownish tint.petrol1997–2003CoolingRead the full fault: symptoms, where to look, what to ask the seller

06Valvematic controller failure (2.0 3ZR-FAE)

Start the engine cold and listen at the top of the engine for rattles or knocking that persists past the first seconds.petrol2013–2020Engine
OccasionalEngine $1,800–$3,500 to fix

Can't confirm for this car

The 2.0-litre 3ZR-FAE in the XU60 Harrier uses Toyota's Valvematic continuously variable valve-lift system, and the Valvematic controller (the electric actuator on the cylinder head) is a documented weak point across all 3ZR-FAE applications. It fails with rattles/knocks, rough running, check engine light and limp mode, and the only fix is replacing the complete controller unit - an expensive part even aftermarket. The same engine also has the usual VVT-i cold-start rattle. Any check engine light on a 2.0 XU60 needs proper diagnosis before purchase because this repair can exceed $3,000.

Symptoms to notice

  • Check engine light with Valvematic fault codes
  • Knocking or rattling noise from the top of the engine
  • Rough idle, poor throttle response or limp mode
  • Noticeably increased fuel consumption

What to check

  1. Start the engine cold and listen at the top of the engine for rattles or knocking that persists past the first seconds.
  2. Check no engine warning light is on and ask for a scan tool check for stored codes - Valvematic faults log clearly.
  3. On the test drive, confirm smooth idle and clean throttle response at all speeds.

Where to look: Valvematic controller unit bolted to the intake side of the cylinder head, under the bonnet

Parts involved: Cylinder head.

Ask the seller

  • “Has the Valvematic controller ever been replaced?”
  • “Has the check engine light ever come on, and what was the code?”
  • “Any unusual rattles from the engine when cold?”

072AZ-FE Oil Consumption on 2.4 Variant

Check oil level frequently.petrol2003–2013Engine
CommonEngine $500–$3,000 to fix

Can't confirm for this car

The MCU36 Harrier 2AZ-FE 2.4 variant consumes oil from piston ring and valve stem seal wear at elevated rates on high-km examples.

Symptoms to notice

  • Blue smoke from exhaust on startup and deceleration
  • Frequent oil top-ups needed between regular service intervals

What to check

Check oil level frequently. Blue smoke from exhaust on startup indicates valve stem seal or ring wear.

Where to look: 2AZ-FE engine cylinder bores, piston rings, and valve stem seals

Ask the seller

  • “Has the 2az-fe oil consumption on 2.4 been inspected or repaired?”

08Automatic Transmission Torque Converter Shudder

Test drive at 80-100 km/h with very light throttle and feel for rhythmic vibration.petrol2003–2013Transmission
CommonTransmission $400–$2,500 to fix

Can't confirm for this car

Harrier automatic transmission develops torque converter lock-up shudder under light throttle at highway cruise.

A cutaway automatic transmission torque converter showing the internal turbine and stator.Example of the part — not this vehicle

A torque converter, sectioned. The lock-up clutch inside is what shudders.

No machine-readable author provided. BerndB~commonswiki assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons

Symptoms to notice

  • Rhythmic vibration at highway speed under light throttle
  • Shudder clears under firm acceleration as lock-up clutch releases

What to check

Test drive at 80-100 km/h with very light throttle and feel for rhythmic vibration. ATF that is brown rather than red indicates degraded fluid.

Where to look: Automatic transmission and torque converter assembly

Parts involved: Torque converter.

Ask the seller

  • “Has the automatic transmission torque converter shudder been inspected or repaired?”

091MZ-FE VVT-i actuator blocked by oil sludge

Remove oil filler cap and inspect underside for sludge or varnish deposits.petrol1997–2003EngineRead the full fault: symptoms, where to look, what to ask the seller

10A541E Automatic Transmission Torque Converter Clutch Shudder

Test drive at highway speed (80–100 km/h) with light, steady throttle and note any rhythmic vibration or shudder felt through the floor and seat.petrol1997–2003TransmissionRead the full fault: symptoms, where to look, what to ask the seller

111MZ-FE VVT-i Solenoid Sludge Failure

Connect a scanner and check for VVT-i fault codes.petrol2003–2013Engine
CommonEngine $400–$1,200 to fix

Can't confirm for this car

The MCU35/36 Harrier 1MZ-FE 3.0 V6 VVT-i oil control solenoid valves clog with sludge from infrequent oil changes, causing the VVT-i system to fail. The sludge restricts oil flow to the variable cam timing actuators causing the engine management system to illuminate a check engine light with VVT-i fault codes.

Symptoms to notice

  • Check engine light with VVT-i related fault codes at startup
  • Rough idle on cold start that improves once the engine reaches operating temperature

What to check

Connect a scanner and check for VVT-i fault codes. A rough idle that improves after warm-up on a high-km 1MZ-FE suggests VVT-i solenoid sludge. Ask about oil change history — intervals beyond 5000km with a 1MZ-FE strongly increase sludge risk.

Where to look: VVT-i oil control solenoid valves on each cylinder bank of the 1MZ-FE V6

Ask the seller

  • “Has the 1mz-fe vvt-i solenoid sludge failure been inspected or repaired?”

12Jerky low-speed shifts from Direct Shift-CVT (2.0 M20A, XU80)

Spend part of the test drive in slow stop-start conditions: repeated gentle take-offs, crawling, and light throttle at 10-30 km/h.petrol2020 onwardTransmission
OccasionalTransmission $200–$1,500 to fix

Can't confirm for this car

Owners of the 2.0 petrol XU80 report jerky or hesitant behaviour from the Direct Shift-CVT (which uses a physical launch gear before handing over to the belt), most noticeable in stop-start traffic and on light throttle take-up. It is listed among the model's most-reported problems in owner guides. In most cases it is a characteristic or is improved by software updates and fresh CVT fluid rather than a hard failure, but a unit that clunks, slips or shudders hard needs specialist assessment - the transmission is new-generation and repair parts are dealer-priced.

Symptoms to notice

  • Jerk or lurch during low-speed take-off or crawling in traffic
  • Hesitation when accelerating from a stop
  • Clunk when shifting between Drive and Reverse

What to check

Spend part of the test drive in slow stop-start conditions: repeated gentle take-offs, crawling, and light throttle at 10-30 km/h. Some launch-gear handover feel is normal; hard clunks, slip or shudder are not. Ask whether any transmission software updates or fluid services have been done.

Where to look: Direct Shift-CVT transmission at the front of the car

Ask the seller

  • “Has the transmission ever been reflashed or serviced?”
  • “Does it ever clunk or lurch in traffic?”
  • “Is there any remaining Toyota warranty, and does it transfer to NZ?”
Electrical5

01Hybrid inverter IPM failure - system shutdown (Harrier Hybrid MHU38)

Get a hybrid-capable scan before buying: inverter fault history (codes like P0A94/P3004 family) is stored even after warnings clear.hybrid2005–2012Electrical
OccasionalElectrical $2,000–$6,000 to fix

Can't confirm for this car

The Harrier Hybrid MHU38 is mechanically the Lexus RX400h, which was recalled (Lexus Safety Recall BLD) because transistors in the inverter's Intelligent Power Module were inadequately soldered and fail under heat during high-load driving. Failure lights up multiple dash warnings, forces limp mode, and can shut the hybrid system down completely while driving. The US recall never covered JDM Harriers, so imported cars carry the same defect with no factory remedy. Replacement inverters are expensive; used or repaired units are the realistic fix in NZ.

Symptoms to notice

  • Multiple warning lights (hybrid system, check engine, VSC) at once
  • Sudden loss of power / limp mode, especially under hard acceleration or towing
  • Car refuses to READY / start
  • Complete shutdown while driving

What to check

  1. Get a hybrid-capable scan before buying: inverter fault history (codes like P0A94/P3004 family) is stored even after warnings clear.
  2. On the test drive, accelerate hard up a hill for a sustained burst - IPM failures show under high load.
  3. Ask whether the inverter has ever been replaced and check for paperwork.

Where to look: Inverter unit - the large finned box on top of the transaxle in the engine bay

Ask the seller

  • “Has the inverter or hybrid system ever been repaired?”
  • “Has it ever cut power or shown multiple warning lights under hard acceleration?”
  • “Can I have a hybrid specialist scan it before purchase?”

02MCU35 AWD rear diff vacuum solenoid failure

Inspect vacuum solenoid valve on firewall or near ATC module for cracked casing or corroded electrical connector.petrol2003–2013ElectricalRead the full fault: symptoms, where to look, what to ask the seller

03Electric Power Steering Rack Rattle

Drive over rough surfaces at low speed and listen for rattle from the steering rack area.2003–2013Electrical
CommonElectrical $600–$2,200 to fix

Can't confirm for this car

EPS rack develops internal rattle at low speeds over rough surfaces.

Symptoms to notice

  • Knocking or rattling from steering rack at low speeds
  • Vibration through steering wheel during slow manoeuvring

What to check

Drive over rough surfaces at low speed and listen for rattle from the steering rack area.

Where to look: Electric power steering rack assembly

Parts involved: Steering rack.

Ask the seller

  • “Has the electric power steering rack rattle been inspected or repaired?”

04Air Conditioning Compressor Electromagnetic Clutch Failure

petrol1997–2003Electrical
CommonElectrical $450–$1,300 to fix

Can't confirm for this car

The Denso SD7H15 compressor fitted to the MCU10/MCU15 Harrier uses an electromagnetic clutch to engage and disengage the compressor from the drive belt. The clutch plate, rotor, and coil assembly are wear items that fail after high-mileage use or prolonged disuse of the air conditioning system. The clutch air gap widens as the friction surface wears, eventually preventing engagement. A failed clutch coil produces the same symptom. In some cases the clutch plate seizes to the rotor and drags the belt continuously, causing belt and pulley bearing failure. Denso documents this clutch as a serviceable assembly separate from the compressor body.

Symptoms to notice

  • Air conditioning system producing no cooling with the compressor clutch visibly not engaging
  • Grinding or squealing noise from the compressor belt area when AC is switched on
  • Clutch engaging intermittently with cooling output fluctuating
  • Drive belt showing accelerated wear or slipping due to clutch plate dragging on the rotor

What to check

  1. With the engine running and AC set to maximum cold, observe the compressor clutch hub at the front of the compressor — it should spin with the pulley when engaged and be stationary when off.
  2. Listen for a click when the AC is switched on.
  3. Inspect the drive belt for oil contamination from compressor shaft seal.
  4. If a workshop inspection is possible: If the clutch plate does not engage, use a multimeter to test coil resistance across the two-pin connector (typically 3–4 ohms for Denso units; open circuit indicates coil failure).
  5. Measure the clutch air gap with feeler gauges — Denso specification is 0.4–0.6 mm; gaps above 1 mm prevent engagement.

Where to look: Air conditioning compressor front face, electromagnetic clutch assembly (plate, rotor, coil), driver's side lower engine bay, belt-driven from crankshaft

Parts involved: Clutch.

Ask the seller

  • “Does the air conditioning cool effectively and has the system been regassed recently?”
  • “Has the compressor clutch or AC system ever been repaired or inspected?”
  • “Does the AC work consistently or does it cut in and out during operation?”

0512V battery drain and infotainment/electronic glitches (XU80)

Test every electronic feature: touchscreen, cameras, digital inner mirror, powered tailgate, parking sensors and driver-assist toggles.2020 onwardElectrical
CommonElectrical $200–$900 to fix

Can't confirm for this car

The current XU80 Harrier's most-reported owner complaints are electrical: 12V auxiliary battery drain leaving the car unable to start (a known trait of Toyota's TNGA-era cars, hybrids included, because many modules stay awake), sensor malfunctions, and glitches or freezes in the 8-12.3 inch display audio system. The digital inner mirror and powered tailgate are further gadgets to test. Most issues are resolved by software updates or a new 12V battery, but on a JDM import the head unit is Japan-spec, so radio conversion and Japanese menus are additional considerations.

Symptoms to notice

  • Car won't wake / dead after sitting a few days
  • Infotainment screen freezing, rebooting or losing Bluetooth
  • Random sensor or safety-system warnings that clear on restart
  • Digital mirror or camera displays glitching

What to check

  1. Test every electronic feature: touchscreen, cameras, digital inner mirror, powered tailgate, parking sensors and driver-assist toggles.
  2. Ask how often the car is driven - a car that sits needs a healthy 12V battery, so ask its age and look for a purchase receipt.
  3. Confirm the radio has been band-converted for NZ and check whether any software updates were done in Japan.

Where to look: 12V battery in the engine bay (or boot on hybrid); display audio unit in the centre dash

Parts involved: 12V battery.

Ask the seller

  • “Has the 12V battery ever gone flat or been replaced?”
  • “Do the screen, cameras and digital mirror all work without glitches?”
  • “Has the stereo been converted for NZ radio frequencies?”
Body, brakes, suspension & interior7

01Front Lower Control Arm Ball Joint Wear

With the wheel hanging freely, grip the tyre at 6 and 12 o'clock and check for vertical play in the ball joint.1997–2003Suspension
CommonSuspension $350–$800 to fix

Can't confirm for this car

The front lower control arm ball joints on the MCU10 and MCU15 Harrier are a high-wear item that degrades progressively with age and mileage, particularly on New Zealand roads. The ball joint carries combined lateral and vertical loads at the wheel hub and its rubber boot splits over time, allowing grease loss and water ingress that accelerates wear. Excessive radial play causes imprecise steering and is a common Warrant of Fitness failure point in NZ. In severe cases a failed ball joint can separate, causing sudden loss of steering and wheel collapse. Toyota specifies a maximum radial play tolerance and calls for replacement when exceeded; press-in replacement joints are available from Toyota and aftermarket suppliers.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking or knocking from the front suspension when going over speed bumps or rough surfaces
  • Vague or imprecise steering with the vehicle wandering on straight roads
  • Uneven or rapid tyre wear on the front axle
  • Warrant of Fitness rejection for excessive ball joint play

What to check

With the wheel hanging freely, grip the tyre at 6 and 12 o'clock and check for vertical play in the ball joint. Then grip at 3 and 9 o'clock and check for radial play. Any detectable play beyond 1 mm is cause for rejection in NZ WoF. Inspect the dust boot for cracks or tears with a torch. Lower the vehicle onto its wheels and have an assistant rock the steering while you observe the ball joint for movement with the vehicle weight loaded. If a workshop inspection is possible: Raise the vehicle on a hoist and support the lower arm.

Where to look: Front lower control arm (wishbone), ball joint at the outboard end connecting to the steering knuckle, both left and right sides

Parts involved: Ball joint.

Ask the seller

  • “When were the front ball joints last inspected or replaced?”
  • “Has the vehicle had any recent WoF advisory notices related to suspension?”
  • “Have you heard any clunking from the front suspension over rough roads?”

02Skid control ECU recall — stability control may not switch back on

2020–2022BrakesRead the full fault: symptoms, where to look, what to ask the seller

03Rear Suspension Trailing Arm and Lateral Link Bush Collapse

Look for the rubber sitting proud of the metal sleeve or showing full separation.1997–2003SuspensionRead the full fault: symptoms, where to look, what to ask the seller

04Front Lower Arm Ball Joint Wear

Inspect the boot for splitting.2003–2013Suspension
CommonSuspension $350–$800 to fix

Can't confirm for this car

Front lower arm ball joints wear causing clunking and handling imprecision on the heavy Harrier.

The front wheel of a car splayed outward with the lower control arm hanging down after a ball joint separation.Example of the part — not this vehicle

A separated lower ball joint: the control arm has dropped and the wheel has splayed out under the guard.

Elfix · CC0 · Wikimedia Commons

Symptoms to notice

  • Clunking from front suspension over bumps
  • Imprecise handling feel when cornering

What to check

Inspect the boot for splitting. If a workshop inspection is possible: With vehicle raised, lever the lower arm and check for ball joint play.

Where to look: Front lower suspension control arms

Parts involved: Ball joint.

Ask the seller

  • “Has the front lower arm ball joint been inspected or repaired?”

05Brake Caliper Guide Pin Seizure

Check for pulling under braking.2003–2013Brakes
CommonBrakes $200–$600 to fix

Can't confirm for this car

Front and rear brake caliper guide pins seize from corrosion causing uneven pad wear.

Symptoms to notice

  • Vehicle pulling to one side under braking
  • One disc hotter than the other after moderate use

What to check

  1. Check for pulling under braking.
  2. Feel for uneven wheel heat.
  3. Inspect guide pins.

Where to look: Front and rear brake calipers

Parts involved: Brake disc and pads.

Ask the seller

  • “Has the brake caliper guide pin seizure been inspected or repaired?”

06Rear Multi-Link Bush Collapse

Inspect rear suspension arm bushes for cracking.2003–2013Suspension
CommonSuspension $400–$1,200 to fix

Can't confirm for this car

Rear multi-link suspension arm bushes harden and collapse causing rear knocking.

Symptoms to notice

  • Knocking from rear suspension over rough surfaces
  • Imprecise rear handling feel

What to check

  1. Inspect rear suspension arm bushes for cracking.
  2. Push arms — any movement indicates collapsed bushes.

Where to look: Rear multi-link suspension arm bushes

Ask the seller

  • “Has the rear multi-link bush collapse been inspected or repaired?”

07Front sway bar end link and bushing failure

Inspect the rubber sway bar mounting bushings for cracking, separation from the bracket, or flattening.petrol1997–2013Suspension
Very commonSuspension $180–$650 to fix

Can't confirm for this car

The front anti-roll bar (sway bar) end links on both MCU15 and MCU35 Harrier generations use a ball-and-socket joint encased in a polyurethane or rubber boot. The end link joints wear through the ball seat and boot degradation from road grime and moisture intrusion, leading to loose articulation and audible metallic knocking. Simultaneously the sway bar mounting bushings, made from natural rubber bonded to a steel bracket, oxidise and crack from New Zealand and Australian UV exposure and road salt, causing the bar to develop lateral play and knock. Both failures are amplified on urban roads with frequent direction changes and speed bumps, and both are commonly found together given the similar operational wear cycles.

Symptoms to notice

  • Clunking or knocking noise from front suspension over bumps or when turning
  • Noise worsens on speed bumps and rough surfaces
  • Vague or loose steering feel on corner entry
  • Visible cracked or split rubber on sway bar bushings
  • End link boot split with visible ball joint play when physically checked

What to check

Inspect the rubber sway bar mounting bushings for cracking, separation from the bracket, or flattening. Also check rear sway bar end links which follow a similar wear pattern. If a workshop inspection is possible: With vehicle on a hoist, grasp front sway bar and rock it laterally — any movement at the mounting bushings or end link joints indicates wear. Physically check each end link for ball joint play by prying with a lever while observing.

Where to look: Front suspension — sway bar end links connecting bar to strut lower arm, and rubber bushing clamps on subframe

Ask the seller

  • “Have the sway bar end links or bushings been replaced?”
  • “Does the front suspension knock over speed bumps or rough roads?”
  • “When was the last full suspension inspection carried out?”
  • “Has the vehicle had a wheel alignment recently and were any suspension items noted?”
Fluid leaks2

01Power steering rack and high-pressure hose leaks (XU30, shared with Lexus RX330/350)

Check the power steering reservoir level and whether the fluid is fresh or black.petrol2003–2013Fluid LeaksRead the full fault: symptoms, where to look, what to ask the seller

02Power Steering Pump Shaft Seal Leak

Inspect the power steering pump pulley and the subframe below it for reddish-pink fluid staining.petrol1997–2003Fluid Leaks
CommonFluid Leaks $450–$1,200 to fix

Can't confirm for this car

The power steering pump fitted to the 1MZ-FE Harrier is prone to shaft seal deterioration after 150,000 km or when the power steering fluid has not been renewed. The shaft seal behind the pulley weeps fluid onto the drive belt and subframe, and if unchecked the fluid loss eventually causes pump whine, stiff steering, and pump bearing failure. The high-pressure hose banjo fittings also crack at the pump outlet on aged vehicles. Both the seal and high-pressure hose are standard service items. Aisin (the OEM pump supplier) documents this seal as a scheduled replacement component at high mileage.

Symptoms to notice

  • Reddish-pink power steering fluid pooling under the engine or staining the driver's-side subframe
  • High-pitched whining or moaning noise from the pump when turning the steering wheel
  • Increasing steering effort particularly at low speeds or on full lock
  • Power steering drive belt showing oil contamination or glazing

What to check

  1. Inspect the power steering pump pulley and the subframe below it for reddish-pink fluid staining.
  2. Check the reservoir fluid level and condition — black or cloudy fluid indicates long-term neglect.
  3. With the engine idling, turn the steering lock to lock and listen for moaning or whining from the pump.
  4. Inspect the high-pressure hose banjo fitting at the pump outlet for seepage and crack formation.
  5. Check the drive belt for oil contamination causing glazing or cracking.

Where to look: Power steering pump body, shaft seal behind the belt pulley, driver's side lower engine bay; high-pressure hose at the pump outlet banjo fitting

Parts involved: Steering rack.

Ask the seller

  • “Has the power steering fluid ever been changed and when was it last checked?”
  • “Have you noticed any steering noise or increased effort when turning?”
  • “Is there any fluid staining visible under the driver's side of the engine bay?”

Toyota Harrier faults in detail

Each of these has its own page: the symptoms, where to look, what to ask the seller and what the repair costs. Free, no account needed.

1MZ-FE Engine Oil Sludge and Bearing FailureCritical · Engine1MZ-FE radiator plastic end tank crackingCritical · Cooling1MZ-FE Rear Cylinder Bank Head Gasket SeepageMajor · Cooling1MZ-FE VVT-i actuator blocked by oil sludgeMajor · EngineA541E Automatic Transmission Torque Converter Clutch ShudderMajor · TransmissionExcessive oil consumption - 2.4 2AZ-FE piston ring defectCritical · EngineMCU35 AWD rear diff vacuum solenoid failureMajor · ElectricalPower steering rack and high-pressure hose leaks (XU30, shared with Lexus RX330/350)Major · Fluid LeaksRear Suspension Trailing Arm and Lateral Link Bush CollapseMajor · SuspensionSkid control ECU recall — stability control may not switch back onCritical · Brakes

What these repairs cost on other cars

Some of the Toyota Harrier’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

Buying guides that cover the Toyota Harrier

Other Toyota models

Toyota Prado64 documented faultsToyota RAV463 documented faultsToyota Hilux59 documented faultsToyota Belta25 documented faultsToyota Crown24 documented faultsToyota LC20023 documented faults

Toyota Harrier buyer questions

Is the Toyota Harrier reliable?

Like any used car, it depends on the specific example and its service history. Across the 26 documented faults for the Toyota Harrier, the recurring problem areas are engine, electrical, and cooling. A Toyota Harrier with a full service history and no signs of the issues listed on this page can be a sound buy but each one needs to be checked individually before you commit.

What are the most common problems with a used Toyota Harrier?

We've catalogued 26 known faults for the Toyota Harrier, covering engine, electrical, and cooling. All 26 are written out in full on this page, with the symptoms to notice, what to inspect, and typical repair costs for each. Free to read, no account needed.

How much do repairs cost on a Toyota Harrier?

Most single repairs on the Toyota Harrier fall between $450–$1,500 at NZ independent-workshop rates. Some of the 26 documented faults cost less and a few cost considerably more, and no one car needs them all. Knowing which ones to look for before you view is what lets you negotiate the price down or walk away.

Should I get a pre-purchase inspection on a Toyota Harrier?

Yes. A Toyota Harrier inspection focused on its known weak points is the single best way to avoid an expensive mistake. KickTyres gives you a guided, model-specific inspection plus a market valuation and negotiation figure for $24.90 far less than the cost of missing one of the faults on this page.