Power Transfer Unit (PTU) Failure
SeriousGearbox & TransmissionThe PTU, which sends power to the rear wheels, is prone to internal spline wear or actuator failure.
Est. Repair Cost: £800–£1,500
Warning Signs:
"Service 4WD" warning light, Grinding noise from front axle, 4WD system won't engage
What to Inspect:
- Scan for 4WD system fault codes
- Check history for PTU replacements or software updates
Verified by IsItAGoodCar Research Team