Skip to content
KickTyres
Lexus1997–2020 Critical issues documented

Lexus GS S160: common faults & what to check

The S160 is the Lexus GS built 1997–2006. Of the 19 faults documented for the GS, 3 apply to this generation, each with its symptoms, what to inspect and a typical repair cost. Free, no account needed.

Check this exact Lexus GS

  • 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 →

19

Documented faults

Critical

Most serious

$700–$1,800

Typical repair

5

Systems covered

You're looking at the S160

Everything below is narrowed to this variant. Pick a different one to change it.

Choose a different generation

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.

A 1997 Lexus GS is the S160 generation (1997 to 2006).

We cannot narrow the engine list to this year, so every engine this model was sold with is offered.

Start your free check on this Lexus GS

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.

Lexus GS S160Engine not picked yet

Pick the engine above first: the GS came with 7, 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

Lexus GS · 1997

Narrowed to the year. No engine is recorded for this vehicle. Pick an engine to see which faults apply.

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

  • No engine is recorded for this vehicle.

matched on year only

What to look out for

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

  • Costly issue

    Check ride height at all four corners visually — the car should sit level and at correct height.

    See why

    Air Suspension Compressor Pump Failure (S160 GS)

    The S160 GS300 and GS400 equipped with electronically controlled air suspension use an air compressor to maintain ride height. The compressor motor and its internal reed valves wear out with age and use, causing the car to sag at one or more corners or to sit permanently low. The compressor may be heard running continuously as it attempts to compensate for pressure loss. Replacement compressors are expensive new; quality rebuilt units are available but fitment is labour-intensive.

    What you would notice

    • Car sitting noticeably lower at one corner or the entire rear
    • Compressor running for extended periods or continuously after starting
    • Handling that feels soft, vague, or bouncy compared to factory spec
    • Height sensor fault codes or suspension warning light on dash

    Typically $1,200–$2,800 to put right.

See all 3 issues for this oneDocumented for the exact year and engine you picked, including 1 rated critical.
Body, brakes, suspension & interior1

01Air Suspension Compressor Pump Failure (S160 GS)

Check ride height at all four corners visually — the car should sit level and at correct height.petrol1997–2005SuspensionRead the full fault: symptoms, where to look, what to ask the seller
Depends on the exact engine — 2 moreDocumented for a specific engine we could not confirm from what you picked. Check the engine code on the car.
Engine, transmission & cooling2

011UZ-FE Timing Belt Critical Failure (GS400/GS430)

Demand documented belt replacement history.petrol1997–2005EngineRead the full fault: symptoms, where to look, what to ask the seller

022JZ-GE VVT-i Oil Control Solenoid Blockage (GS300)

Scan for VVT-i related codes (P1346, P1349).petrol1997–2005Engine
OccasionalEngine $200–$700 to fix

Can't confirm for this car

The GS300 S160's 2JZ-GE 3.0L inline-six with VVT-i uses an oil-pressure-actuated solenoid to advance intake cam timing. Over time, sludge from degraded or infrequently changed oil partially blocks the solenoid's oil passage or sticks the solenoid valve, causing the VVT-i system to fail to advance timing correctly. The engine runs rough at idle, and fault codes for variable valve timing malfunction are stored. Cleaning or replacing the solenoid and performing a full oil service resolves the issue in most cases.

Symptoms to notice

  • Rough idle, particularly at operating temperature
  • Check Engine light with P1349 or P1346 (VVT-i malfunction) codes
  • Engine hesitation or flat spot at partial throttle
  • Slight rattle or clicking on cold startup from cam area

What to check

  1. Scan for VVT-i related codes (P1346, P1349).
  2. Check oil condition and service history — sludge-prone if intervals were extended.
  3. Inspect the VVT-i solenoid connector for corrosion.
  4. Warm the engine and note if idle quality improves or remains rough.

Where to look: VVT-i oil control solenoid on the front of the cylinder head, intake cam side

Ask the seller

  • “Has a scan been done for any fault codes?”
  • “What is the oil change history — what interval was used?”
  • “Any rough idle or hesitation?”
Other Lexus GS engines and years16 documented issues that do not apply to the one you picked.
Engine, transmission & cooling8

01GS450h HV Inverter Electric Coolant Pump Failure

With the car running, listen near the inverter (under the bonnet, near the firewall) for the quiet hum of the electric coolant pump.hybrid2006–2012CoolingRead the full fault: symptoms, where to look, what to ask the seller

02L10 GS low-pressure fuel pump can fail, stall with no restart (2020 recall, GS 350, 250, 200t, 300h, 450h)

Ask the seller for the recall completion record or a dealer service invoice showing the recall work.2013–2019Engine
OccasionalEngine $0–$1,800 to fix

Does not apply

L10 generation GS models built from September 2013 to April 2019, including the GS 350 3.5 V6, were recalled in 2020 (campaigns VGG17 and VGG05, PRA 2020/18243) because the low-pressure fuel pump in the tank can stop working. The engine may run roughly, show warning lights, or stall while driving and not restart. Lexus replaces the pump free under the recall. Recall lists cover cars sold new in Australia, so for an NZ-new or imported car ask a franchise dealer to check the VIN.

Symptoms to notice

  • Engine stumbles or runs roughly
  • Check engine or other warning lights
  • Engine stalls while driving and will not restart

What to check

Ask the seller for the recall completion record or a dealer service invoice showing the recall work. Type the VIN into the manufacturer recall check or the Australian vehicle recall site on your phone while standing at the car. On a long test drive watch for hesitation, rough running or warning lights, and restart the car hot at the end. If a workshop inspection is possible: ask a Lexus dealer to confirm the fuel pump campaign is closed for this VIN.

Where to look: Inside the fuel tank, under the rear seat area

Ask the seller

  • “Has the fuel pump recall (VGG17 or VGG05) been done?”
  • “Has the car ever stalled or refused to restart?”

033UZ-FE 4.3L Engine Sludge and Oil Consumption (GS430)

Remove oil filler cap and use a torch to inspect inside the rocker cover for sludge or varnish — clean engines show pale gold surfaces.petrol2005–2007Engine
OccasionalEngine $800–$4,500 to fix

Does not apply

Unconfirmed. This entry does not match our record of which engines and years this model was sold with, and is awaiting review. Confirm it against the car before acting on it.

The 3UZ-FE V8 in the GS430 is susceptible to engine sludge formation when oil change intervals are extended beyond 7,500 km or when the vehicle is used predominantly on short trips. Sludge blocks oil passages to the VVT-i actuators and hydraulic valve lifters, causing rattling on startup and eventual camshaft wear. At higher mileages the engine can also consume oil through worn valve stem seals, though consumption is less severe than the 4GR-FSE. The 3UZ-FE shares the sludge vulnerability documented across the broader UZ-series V8 family.

Symptoms to notice

  • Tapping or rattling noise from top of engine on cold start, lasting more than 5 seconds
  • VVT-i fault codes or Check Engine light (P1349 — VVT system malfunction)
  • Oil level drops between services with no external leak
  • Oil filler cap or rocker cover interior coated in thick sludge or mayonnaise-like deposit

What to check

  1. Remove oil filler cap and use a torch to inspect inside the rocker cover for sludge or varnish — clean engines show pale gold surfaces.
  2. Check for ticking on a cold start listening at the cam covers.
  3. Pull the dipstick and look for dark, viscous oil even if recently changed.
  4. Request full service history showing oil change intervals; reject any vehicle with gaps over 10,000 km.

Where to look: Engine top end — VVT-i actuators, oil galleries, valve stem seals

Ask the seller

  • “How frequently was the oil changed, and what oil specification was used?”
  • “Has the VVT-i system ever triggered a fault code or warning light?”

04FSE Direct Injection Intake Valve Carbon Buildup (GS300/GS350)

Request a bore-scope inspection of intake valves through the intake ports before purchase.petrol2005–2011EngineRead the full fault: symptoms, where to look, what to ask the seller

05Water pump and coolant leaks with age

Check coolant level and colour, look under the car after idling for drips, and confirm the temperature gauge stays steady on the drive.petrol2005–2011Cooling
OccasionalCooling $500–$1,600 to fix

Does not apply

As these GS models age, the water pump and cooling hoses become a common source of coolant leaks, and a slow weep can progress to overheating on the V6 or V8 if not caught. Overheating a direct-injection V6 risks warping and gasket damage, so cooling history matters on higher-km cars.

Symptoms to notice

  • Coolant drips or crusty residue
  • Needing to top up coolant
  • Temperature rising in slow traffic

What to check

  1. Check coolant level and colour, look under the car after idling for drips, and confirm the temperature gauge stays steady on the drive.
  2. Ask if the water pump has been replaced.

Where to look: Water pump and hoses, front of engine

Parts involved: Water pump.

Ask the seller

  • “Has the water pump been replaced?”
  • “Has it ever run hot?”

06Coolant leaks from radiator and hoses causing overheating

Check the coolant level and look under the car for drips after it has idled.petrol2000–2005Cooling
OccasionalCooling $400–$1,500 to fix

Does not apply

Ageing GS300/430 models commonly develop coolant leaks from the radiator (especially the plastic end tanks), hoses and connections, which can lead to overheating if ignored. On an inline-six or V8 that has overheated, warping and gasket damage become the real risk. Many imports arrive with tired original cooling parts.

Symptoms to notice

  • Coolant smell or steam
  • Low coolant / needing top-ups
  • Temperature gauge creeping up in traffic

What to check

  1. Check the coolant level and look under the car for drips after it has idled.
  2. Inspect the radiator end tanks and hoses for crusty residue.
  3. Confirm the temperature gauge sits steady on the test drive.

Where to look: Radiator, hoses and water pump at the front of the engine

Parts involved: Radiator.

Ask the seller

  • “Has it ever overheated?”
  • “When were the radiator and hoses last replaced?”

07Denso low-pressure fuel pump can fail (GS350)

Confirm by VIN at a Lexus dealer that the fuel-pump recall has been done, or ask the seller for proof.petrol2013–2020Engine
OccasionalEngine $600–$1,200 to fix

Does not apply

The naturally aspirated GS350 of this era shares the Denso low-pressure fuel pump used across many 2013-2020 Toyota/Lexus models, whose impeller can crack and jam and cut fuel supply, stalling the engine without warning. It was a large recall with the pump replaced free, so the risk is an unrepaired car.

Symptoms to notice

  • Engine cuts out while driving or idling
  • Hard to start / long crank
  • Warning lights then a stall

What to check

  1. Confirm by VIN at a Lexus dealer that the fuel-pump recall has been done, or ask the seller for proof.
  2. Ask whether the car has ever stalled.

Where to look: Fuel pump inside the fuel tank

Parts involved: Water pump.

Ask the seller

  • “Has the fuel-pump recall been completed?”
  • “Has it ever stalled unexpectedly?”

08Turbo (200t/300) intake-valve carbon buildup

On the test drive feel for a lumpy idle and hesitation, especially on a cold start.petrol2012–2020Engine
CommonEngine $500–$1,100 to fix

Does not apply

The 2.0 turbo (8AR-FTS) GS200t/GS300 uses direct injection, which over time lets carbon cake onto the back of the intake valves because fuel no longer washes them. This shows up as rough idle, hesitation and misfires, and the cure is a walnut-blast clean. It is a maintenance reality of the turbo engine rather than a defect, but many cars have never had it done.

Symptoms to notice

  • Rough or shaky idle
  • Hesitation or stumble under acceleration
  • Misfire code / check-engine light

What to check

On the test drive feel for a lumpy idle and hesitation, especially on a cold start. Ask whether the intake valves have ever been cleaned. High-km turbo cars that have only had short trips are higher risk.

Where to look: Intake valves / intake manifold on the 2.0 turbo engine

Parts involved: Turbocharger.

Ask the seller

  • “Have the intake valves ever been walnut-blasted?”
  • “Does it idle smoothly when cold?”
Body, brakes, suspension & interior5

01GS450h rear self-levelling air suspension strut failure

Measure the rear ride height with a tape measure from the centre of the wheel to the wheel arch — it should be level with the front.hybrid2011–2020Suspension
OccasionalSuspension $2,500–$7,000 to fix

Does not apply

GS450h models fitted with the rear adaptive air suspension system suffer from air spring bladder failure, air line leakage, and compressor wear. Once air pressure is lost the rear of the vehicle sags and the compressor runs continuously in an attempt to recover pressure until it burns out. Height sensor linkage corrosion further corrupts ride-height data. NZ and AU independent workshop forums document this as expensive to repair, with many owners opting for a coilover conversion to eliminate the ongoing cost.

Symptoms to notice

  • Rear of the vehicle visibly sitting lower than the front, especially after being parked overnight
  • Suspension warning light on the instrument cluster
  • Audible compressor running from beneath the rear seat or boot area at unusual times
  • Harsh or bouncy ride quality from the rear axle

What to check

  1. Measure the rear ride height with a tape measure from the centre of the wheel to the wheel arch — it should be level with the front.
  2. Check for rear sag after the car sits for 30 minutes with the ignition off.
  3. Listen for the air compressor cycling under the boot floor.
  4. Ask explicitly whether the suspension is still on air or has been converted.

Where to look: Rear air spring struts on both sides and the air compressor unit located in the spare tyre well or beneath the boot floor

Parts involved: Air suspension strut, Shock absorber / strut.

Ask the seller

  • “Is the GS450h still on the original air suspension or has it been converted to coilovers?”
  • “Has the rear air suspension had any warning lights, sagging, or compressor issues?”
  • “Have the rear air struts or compressor been replaced?”

02Air Suspension Compressor Motor Failure (S190 GS)

Park the car overnight and check ride height at the rear corners in the morning.petrol2005–2012SuspensionRead the full fault: symptoms, where to look, what to ask the seller

03Rear Air Suspension Bladder Leak

Park the car on level ground, note rear ride height, then return in the morning and compare.petrol2005–2012SuspensionRead the full fault: symptoms, where to look, what to ask the seller

04Cracking / melting dashboard top

Lift any dash mat and check the top in bright light for cracks and softness near the passenger airbag.petrol2000–2005Interior
CommonInterior $800–$2,500 to fix

Does not apply

The second-generation GS (Aristo) suffers the well-known Toyota/Lexus dashboard problem, where the dash top cracks, warps or turns sticky under UV. Toyota extended dash warranties in some markets but those are long gone. Cosmetic, but a proper dash replacement is costly and it can make the airbag cover brittle.

Symptoms to notice

  • Spider-web cracks across the dash
  • Shiny or tacky surface
  • Windscreen glare from the dash

What to check

Lift any dash mat and check the top in bright light for cracks and softness near the passenger airbag. This is a bargaining point rather than a deal-breaker.

Where to look: Top of the dashboard above the cluster and passenger airbag

Ask the seller

  • “Is a dash mat covering cracks?”
  • “Has the dash top ever been replaced?”

05Cracking / sticky dashboard top

Lift any dash mat and check the top in bright light for cracks and tackiness.petrol2005–2011Interior
CommonInterior $800–$2,500 to fix

Does not apply

The third-generation GS shares the Toyota/Lexus dash issue where the top cracks or goes sticky under sun exposure. It is cosmetic but a genuine dash replacement is expensive, and NZ's UV brings it out on both local and Japanese-import cars.

Symptoms to notice

  • Cracks across the dash top
  • Shiny or tacky surface
  • Dash reflections in the windscreen

What to check

Lift any dash mat and check the top in bright light for cracks and tackiness. Use it to negotiate.

Where to look: Top of the dashboard above the cluster and airbag

Ask the seller

  • “Is a mat hiding dash cracks?”
  • “Has the dash been replaced?”
Fluid leaks3

01L10 GS fuel tank vent tube can crack and leak petrol (2022 recall, GS 350, 250, 200t, 300h, 450h)

Ask the seller for the recall completion record or a dealer service invoice showing the recall work.2012–2018Fluid Leaks
OccasionalFluid Leaks $0–$900 to fix

Does not apply

L10 generation GS models built from 2012 to 2018, including the GS 350 3.5 V6, were recalled in December 2022 (campaign XGG71, REC-005580) because the fuel tank vent tube can develop a stress crack. Over time the crack can grow and leak fuel, which is a fire risk. The repair is free at Lexus dealers under the recall. Recall lists cover cars sold new in Australia, so for an NZ-new or imported car ask a franchise dealer to check the VIN.

Symptoms to notice

  • Smell of petrol around the rear of the car
  • Fuel stain or drips under the rear
  • Check engine light for an evaporative leak

What to check

Ask the seller for the recall completion record or a dealer service invoice showing the recall work. Type the VIN into the manufacturer recall check or the Australian vehicle recall site on your phone while standing at the car. Walk around the back of the car and smell for petrol, especially after refuelling, and look under the rear with a phone torch for wet patches. If a workshop inspection is possible: ask a Lexus dealer to confirm campaign XGG71 is complete.

Where to look: Fuel tank area under the rear of the car

Ask the seller

  • “Has the fuel tank vent tube recall (XGG71) been done?”
  • “Have you ever smelt fuel near the car?”

02VVT-i oil supply hose can leak (rubber section degrades)

Ask whether the VVT-i oil line has been replaced with the updated part (many were done under the campaign).petrol2005–2011Fluid Leaks
OccasionalFluid Leaks $300–$700 to fix

Does not apply

V6 engines in this GS use an oil supply hose to the VVT-i actuator with a rubber section that can develop a pinhole from crankcase gases and leak oil, sometimes quite fast. Toyota/Lexus ran a Limited Service Campaign to replace the rubber hose with an improved part, but that campaign has expired. A sudden oil leak from this hose can drop the level dangerously.

Symptoms to notice

  • Sudden oil loss or low-oil light
  • Oil sprayed around the engine bay
  • Burning-oil smell

What to check

  1. Ask whether the VVT-i oil line has been replaced with the updated part (many were done under the campaign).
  2. Look for oil residue on the engine and check the level.
  3. A car that has never had it done is worth checking closely.

Where to look: VVT-i oil supply hose on the V6 engine

Ask the seller

  • “Has the VVT-i oil hose been replaced with the updated part?”
  • “Has it ever suddenly lost oil?”

03Oil leaks from cam/timing area and valve covers (2JZ)

petrol2000–2005Fluid Leaks
CommonFluid Leaks $400–$1,300 to fix

Does not apply

The straight-six 2JZ engines in the GS300 and twin-turbo Aristo are very durable but tend to seep oil with age from the cam/timing cover and valve-cover gaskets, sometimes needing attention while the timing belt is off. Leaks near the hot exhaust can smoke and smell. Not usually serious, but a car that has run low on oil is a concern.

Symptoms to notice

  • Burning-oil smell when hot
  • Oil residue down the back of the engine
  • Spots on the driveway

What to check

Look along the top and rear of the engine for oily film, check the oil level on the dipstick, and ask when the timing belt (on the 2JZ-GE) was last done since leaks are often fixed at the same time.

Where to look: Cam/timing cover and valve covers on the inline-six

Parts involved: Rocker / valve cover.

Ask the seller

  • “When was the timing belt last replaced?”
  • “Are there any known oil leaks?”

Lexus GS faults in detail

Narrowed to the Lexus GS · 1997. 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.

1UZ-FE Timing Belt Critical Failure (GS400/GS430)Critical · EngineAir Suspension Compressor Pump Failure (S160 GS)Major · Suspension

What these repairs cost on other cars

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

Other Lexus models

Lexus IS41 documented faultsLexus NX22 documented faultsLexus RX21 documented faultsLexus UX16 documented faultsLexus ES12 documented faultsLexus LS12 documented faults

Lexus GS buyer questions

Is the Lexus GS reliable?

Like any used car, it depends on the specific example and its service history. Across the 19 documented faults for the Lexus GS, the recurring problem areas are suspension, cooling, and engine. A Lexus GS 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 Lexus GS?

We've catalogued 19 known faults for the Lexus GS, covering suspension, cooling, and engine. All 19 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 Lexus GS?

Most single repairs on the Lexus GS fall between $700–$1,800 at NZ independent-workshop rates. Some of the 19 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 Lexus GS?

Yes. A Lexus GS 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.