CriticalCommonCooling

Toyota RAV4: A25A-FXS Hybrid Inverter Electric Coolant Pump Failure

A25A-FXS Hybrid Inverter Electric Coolant Pump Failure is a common cooling fault on the Toyota RAV4 on the 2019 onward cars, and we rate it critical. Putting it right costs $700 to $2,200 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 63 documented faults on the Toyota RAV4.

Vehicle: Toyota RAV4
Engine: A25A-FXS
Years: 2019 onward
Fuel: hybrid
Gearbox: auto
System: Cooling

This page covers the Toyota RAV4 as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Toyota RAV4 faults63 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Water pump yet. We would rather show none than show a picture of a different part.

What goes wrong

The XA50 RAV4 Hybrid uses a dedicated electric water pump to cool the high-voltage inverter. This pump is prone to failure from bearing wear and impeller degradation, causing inverter overheating. The coolant warning light illuminates, and the hybrid system enters a reduced-power or shutdown state to protect the inverter. Toyota Australia issued a service campaign for early units. Failure on affected vehicles typically occurs between 60,000–130,000 km and is well-documented across AU and NZ owner communities. Delayed repair risks inverter damage costing substantially more.

What you would notice

Coolant temperature warning light on dash
Hybrid system power reduction warning
Inverter overtemperature DTC stored (P0A93, P0AA6)
Audible change in pump noise from engine bay
System enters limp mode in warm conditions

How to check it

Where to look. Front engine bay, inverter coolant circuit — electric pump mounted near the hybrid inverter

With engine warmed up, listen for the inverter coolant pump (distinct quiet hum near front of engine bay).
Scan for P0A93 and related inverter cooling DTCs.
Check coolant level in the small inverter reservoir (separate from engine coolant).
Ask if Toyota's inverter pump service campaign has been completed.

Parts involved: Water pump.

What it costs to put right

$700 to $2,200 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the vehicle been through the Toyota inverter coolant pump service campaign?”
“Has any coolant warning light appeared on the dash?”
“Has the hybrid system ever entered reduced power mode?”

Now check the Toyota RAV4 you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Toyota RAV4 buyer questions

Is a25a-fxs hybrid inverter electric coolant pump failure serious on a Toyota RAV4?

We rate it critical and common on the Toyota RAV4. The XA50 RAV4 Hybrid uses a dedicated electric water pump to cool the high-voltage inverter. This pump is prone to failure from bearing wear and impeller degradation, causing inverter overheating. The coolant warning light illuminates, and the hybrid system enters a reduced-power or shutdown state to protect the inverter. Toyota Australia issued a service campaign for early units. Failure on affected vehicles typically occurs between 60,000–130,000 km and is well-documented across AU and NZ owner communities. Delayed repair risks inverter damage costing substantially more.

How much does it cost to fix on a Toyota RAV4?

$700 to $2,200 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Toyota RAV4 years are affected?

Our research records this fault on the 2019 onward Toyota RAV4. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

With engine warmed up, listen for the inverter coolant pump (distinct quiet hum near front of engine bay). Scan for P0A93 and related inverter cooling DTCs. Check coolant level in the small inverter reservoir (separate from engine coolant). Ask if Toyota's inverter pump service campaign has been completed. Look here: Front engine bay, inverter coolant circuit — electric pump mounted near the hybrid inverter