Brakes
1 documented fault — symptoms, causes and workshop fixes.
Lack of brake servo assistance when braking
Overview
- Affects
- All models with 1WW/2WW engine codes.
- Remedy
- Fit modified part
- Parts
- 2 parts
Cause
Oil contamination of brake servo causing damage to servo diaphragm.
Repair
- Inspect brake servo for internal oil contamination.
- If oil is found: Fit modified brake servo vacuum hose with additional non-return valve Fit new brake servo.
Parts2 parts
| Part | Part number | Qty |
|---|---|---|
| Servo vacuum hose LHD | 44750-64040 | 1 |
| Servo vacuum hose RHD | 44750-64050 | 1 |
Data: Motorwise Workshop. Bulletin 2.
Steering
1 documented fault — symptoms, causes and workshop fixes.
Increased engine noise in passenger compartment
Steering column sealing boot cracked/damaged. Fix: fit a new part.
Overview
- Affects
- All LHD models.
- Remedy
- Fit new part
Symptoms
Driver's footwell carpet wet after heavy rain. Steering operation not smooth when manoeuvring or parking.
Repair steps
- Remove steering column sealing boot and discard.
- Fit protective cover to new steering column sealing boot Secure protective cover with retaining strap, ensure a clearance of 0.5 - 1.5 mm.
- Fit new steering column sealing boot complete with protective cover.
Parts
| Part | Part number | Qty |
|---|---|---|
| Protective cover | 45254-02020 | 1 |
| Steering column sealing boot | Refer to manufacturer | 1 |
Data: Motorwise Workshop. Bulletin 1.
Glossary
Technical terms used in this guide.
- Brake Servo
- The unit that boosts the force of your foot on the brake pedal
- LHD
- Left-hand drive — steering wheel on the left
Frequently asked questions
What are the common faults with the Toyota Avensis 2.0 D-4D?
This guide contains two workshop bulletins for the Toyota Avensis 2.0 D-4D. Of these, one concerns the brakes and one the steering. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Toyota Avensis 2.0 D-4D 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 Avensis 2.0 D-4D faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.