Engine & fuel system
1 documented fault — symptoms, causes and workshop fixes.
White smoke coming from exhaust
Overview
- Affects
- All models with 2AR-FXE engine code.
- Remedy
- Fit new part
- Parts
- 6 parts
Symptoms
Coolant loss.
Cause
Exhaust gas recirculation (EGR) cooler cracked internally allowing coolant leakage.
Repair
- Fit new exhaust gas recirculation (EGR) cooler.
- Fit new exhaust manifold.
Parts6 parts
| Part | Part number | Qty |
|---|---|---|
| Exhaust manifold | Refer to manufacturer | 1 |
| Exhaust manifold gasket | 17173-36020 | 1 |
| EGR cooler gasket | 25629-36010 | 2 |
| EGR pipe | 25612-36010 | 1 |
| EGR cooler | 25680-36012 | 1 |
| EGR valve | 25620-36060 | 1 |
Data: Motorwise Workshop. Bulletin 3.
Electrical & ignition
1 documented fault — symptoms, causes and workshop fixes.
Lane change assist warning lamp illuminated
Overview
- Affects
- All models with lane change assist.
- Fault codes
U0232- Remedy
- Fit modified part
- Parts
- 1 part
Symptoms
Trouble codes stored: C1AB7, U0232.
Cause
Lane change assist control module faulty.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Fit modified lane change assist control module.
Parts1 part
| Part | Part number | Qty |
|---|---|---|
| Lane change assist control module | 88162-0W384 | 1 |
Data: Motorwise Workshop. Bulletin 2.
Air conditioning & heating
1 documented fault — symptoms, causes and workshop fixes.
Squeaking noise from centre of fascia over uneven surfaces
Friction between audio unit and air conditioning (AC) control module. Fix: clean and lubricate.
Overview
- Affects
- All models, →10/16.
- Remedy
- Clean & lubricate
Repair steps
- Remove audio unit.
- Remove and discard the three felt strips located on underside of audio unit.
- Thoroughly clean all mating surfaces.
- Cut two new felt strips 10 mm x 10 mm and apply to underside of audio unit.
- Refit audio unit.
Parts
| Part | Part number | Qty |
|---|---|---|
| Felt strip | 55355-42050 | 1 |
Data: Motorwise Workshop. Bulletin 1.
Glossary
Technical terms used in this guide.
- EGR
- Exhaust gas recirculation — feeds some exhaust gas back into the intake to cut emissions
- Trouble Codes
- Standardised fault codes stored by the engine control module, read with a diagnostic tool
- AC
- Air conditioning — the system that cools the cabin
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Recirculation
- Air-conditioning mode that recirculates cabin air instead of drawing in outside air
Frequently asked questions
What are the common faults with the Toyota RAV4 2.5 Hybrid Synergy Drive?
This guide contains three workshop bulletins for the Toyota RAV4 2.5 Hybrid Synergy Drive. Of these, one concerns the engine and fuel system and one the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota RAV4 2.5 Hybrid Synergy Drive have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Toyota RAV4 2.5 Hybrid Synergy Drive faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.