Car Problem Reports

Porsche 928 PSD locking system light due to wear in the multi-disc clutch

 
Porsche 928 Problem
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Model Years Affected: 1990, 1991, 1993, 1994, 1995

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Due to wear in the differential multi-disc clutch, the PSD (Porsche Slip Differential) locking system light may illuminate. The independent hydraulic fluid supply for the PSD needs to be maintained properly, including the filling/replacement of fluid before problems develop.
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