31 90 ... Troubleshooting Shock Absorber
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW 750i, 2008 BMW 750Li, 2007 BMW 750i, 2007 BMW 750Li, and 2006 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.
Read and comply with Information on replacing shock absorbers
. See 31 00 ... INFORMATION ON REPLACING SHOCK ABSORBERS .
TROUBLESHOOTING CHART
| Fault |
Cause |
Remedy |
| Shock absorber knocking (bottoming) |
Rubber damper faulty |
Visually inspect auxiliary spring for cracking, replace auxiliary spring
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Shock absorber leaking (oil/gas) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Rattling noise |
Shock absorber mounting loose |
Tighten shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Support bearing faulty/hardened |
Replace support bearing
. See 31 33 001 REPLACING FRONT LEFT OR RIGHT SPRING STRUT SUPPORT BEARING (SPORT SUSPENSION) . |
| Shock absorber leaking (oil/gas) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Worn down areas (flattened areas) on tire profile |
Shock absorber leaking (oil/gas) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Long after-swinging of body after driving over rough road |
Shock absorber leaking (insufficient shock absorber effect) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Building-up of body in case of successive uneven surfaces |
Shock absorber leaking (insufficient shock absorber effect) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Wheels jumping even on normal road surfaces |
Shock absorber leaking (insufficient shock absorber effect) |
Replace shock absorber
. See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (SPORT SUSPENSION) , 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION) or 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION, BUILD DATE FROM 03/2005) . |
| Whistling noises |
Separating skin in vent holes of auxiliary spring |
Remove separating skin |