Test Point 17, DTC 5265

Fault, DTC
Possible causes, elimination, notes
Test point 17
Switch-over valve
DTC 5265

The complete hydraulic unit must be replaced if the switchover valve is damaged.

In the switchover valve test with the Porsche System Tester 2, select switchover valve in the Drive links menu and perform the test according to the Tester instructions.
If the functions specified in the Tester display: Rear axle locked up / Rear axle free are not achieved, the following faults are possible:

Brake not actuated at the start of the test
Test sequence not observed
Function of the switchover valve not OK