Test Point 17

Test point 17
Switch-over valve

DTC 5265

The complete hydraulic unit must be replaced if the switch-over valve is damaged.

In the switch-over valve test with the Porsche System Tester 2, select switch-over 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 switch-over valve not OK.