Faulty hydraulic installation - piston moved in wrong direction
â–¶ How to fix
1. Make sure that the hydraulic hoses are correcly connected (not switched). Run big selftest to invalidate error: 1. Turn the ignition key to OFF, and wait for 10 seconds. 2. Apply Parking brake. 3. Make sure the tag axle wheels are free to steer (e.g. vehicle should not be on a lift) 4. Turn the ignition key to ON. 5. Diagnostic SelfTest is now executed. 6. After approximately 60 second system should return to normal operation. - Faultcodes should be passive.
What you'll see
No driver-visible symptom recorded.
System reaction
Red Steer tag axle fault warn EST in released or fixed mode
Diagnostic depth
Detection
Faulty hydraulic installation - piston moved in wrong direction
Possible cause
Hoses faulty connected (switched ports).