The system has detected a plausible hydraulic or mechanical fault.
1. Perform a Diagnostic SelfTest (requires Parking Brake to be applied) 2. Check for other active OR passive DTCs, that could explain the root cause. - Fix the root cause (that DTC is set passive). 3. Perform a Diagnostic SelfTest (requires Parking Brake to be applied) - If the root cause fault has been fixed, this DTC will be set passive. - If the fault has not been fixed/found, the Diagnostic SelfTest may give a better explanation of the root cause (other DTC with better fault indication will be created).
What you'll see
No driver-visible symptom recorded.
System reaction
Red Steer tag axle fault warn ESTA in released or fixed mode
Diagnostic depth
The tag axle steering is not reaching its expected position, or the locked center position has been lost.
• Low oil level in system, check for DTC 0x0246 (Low hydraulic oil level in Motor PumpUnit, MPU). • Air still remaining in the system after service or oil fill • Hydraulic leakage • Hydraulics blocked / clogged • Worn pump in the MPU unit