The rubber bellows of the air spring loses its elasticity between 80,000 and 120,000 km, the compressor is overloaded, and the control unit reports a fault. The rear settles while the front stays at the correct height. On a twenty year old car the repair can cost more than the car.
What to check
- Look at the car cold, after standing a night
- Watch whether the rear settles while the front stays up
- Raise it to the highest, then the lowest setting, and time it