Q7 Quattro V6-3.6L (BHK) (2007)
Suspension Strut / Shock Absorber: Symptom Related Diagnostic Procedures
Shock Absorber Leak
Shock absorber leak
Shock absorbers are frequently rejected and exchanged because of leaks. Examinations on the test stand and on the vehicle have shown that
replacement of a large number of rejected shock absorbers was not justified.
Slight leaking of oil ( "sweating" ) at piston rod seal is no reason to replace a shock absorber. A shock absorber damp with oil is OK under these
circumstances:
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Oil leak (shown screened in illustration) is visible, but dull, matte and possibly dry from dust.
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Oil leak reaches from upper shock absorber seal (piston rod seal) to lower spring plate arrow -, at most.
Note:
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A slight oil leak is advantageous because it lubricates the piston rod seal and extends its service life. This applies to shock absorbers on front and
rear axles.