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31 90... Troubleshooting Shock Absorber

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Read and comply with Information on replacing shock absorbers.  See 31 00... INFORMATION ON REPLACING SHOCK ABSORBERS 

TROUBLESHOOTING TABLE

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 (STANDARD SUSPENSION)  and 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 (STANDARD SUSPENSION)  and 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 31 000 REMOVING AND INSTALLING COMPLETE LEFT OR RIGHT SPRING STRUT SHOCK ABSORBER 
Support bearing faulty/hardened Replace support bearing  . See 31 33 001 REPLACING FRONT LEFT OR RIGHT SPRING STRUT SUPPORT BEARING (STANDARD SUSPENSION) 
Shock absorber leaking (oil/gas) Replace shock absorber  . See 31 31 031 REPLACING FRONT LEFT OR RIGHT SPRING STRUT (STANDARD SUSPENSION)  and 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 (STANDARD SUSPENSION)  and 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 (STANDARD SUSPENSION)  and 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 (STANDARD SUSPENSION)  and 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 (STANDARD SUSPENSION)  and 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
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