31 90 ... Troubleshooting shock absorber
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2008 BMW 335i, 2008 BMW 328i, 2008 BMW 323i, 2007 BMW 335i, and 2007 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.
Read and comply with Information on replacing shock absorbers.
SHOCK ABSORBER TROUBLESHOOTING CHART
| Fault | Cause | Remedy |
|---|---|---|
| Wheel knocking (bottoming) | Auxiliary spring faulty | Visually inspect auxiliary spring for cracking, replace Auxiliary Spring AWD only: Visually inspect support ring for damage |
| Shock absorber leaking (oil/gas) | Replace Shock Absorber | |
| Rattling noise | Shock absorber mounting loose | Tighten Shock Absorber |
| Support bearing faulty/hardened | Replace Support Bearing | |
| Shock absorber leaking (gas/oil) | Replace Shock Absorber | |
| Worn down areas (flattened areas) on tyre profile | Shock absorber leaking (gas/oil) | Replace Shock Absorber |
| Long after-swinging of body after driving over rough road | Shock absorber leaking (insufficient shock absorber effect) | Replace Shock Absorber |
| Building-up of body in case of successive uneven surfaces | Shock absorber leaking (insufficient shock absorber effect) | Replace Shock Absorber |
| Wheels jumping even on normal road surfaces | Shock absorber leaking (insufficient shock absorber effect) | Replace Shock Absorber |
| Whistling noises | Separating skin in vent holes of auxiliary spring | Remove separating skin |