Important Information

PSD - Fault display / Troubleshooting procedure

Fault display

If the ABS/PSD control unit detects a fault in the electronically controlled limited-slip differential (PSD), the PSD is switched oft for safety reasons and the following fault display appears in the display fields of the information system:

PSD OFF

The PSD is always switched off when the ABS (antilock braking system) is switched off.

Note: The PSD indicator lamp (green lamp) in the instrument cluster lights up while the lock is active.

Troubleshooting procedure

Read out the DTC memory with system tester 9288 and remedy the fault if necessary.

If only the PSD is switched off (ABS OK) and no fault is stored in the ABS/PSD DTC memory, the fault lies in the lock hydraulics (energy production).