Tag axle is centered due to a fault in the system
• Check for other active OR passive primary DTCs, to find the root cause. • Check supply voltage. • Fix the root cause --> responsible primary fault is invalidated (DTC is set passive). • Set the steering wheel in straight ahead position (steering angle approximately 0°). The warning lamp should disappear, and this DTC should become passive. • If warning lamp does not disappear - reset the vehicle by a key OFF/ON toggle (with a 10 second pause in between). • If warning lamp does not disappear - Perform a Diagnostic SelfTest (requires Parking Brake to be applied), by starting this routine in SDP3.
What you'll see
This secondary DTC is active as long as the system remains in the degradation mode. The triggering fault has set a primary DTC. The system cannot resume normal function simply by removing that primary DTC (fixing the fault). Therefore this secondary DTC is created, to indicate that the system is still in fault mode. The system can recover from this fault mode if primary fault no longer active/present and steering wheel passes center and vehicle speed below 20km/h.
System reaction
Yellow Steer tag axle fault wa ESTA in fixed centred mode
Diagnostic depth
The system has degraded itself into centered degraded (Amber warning) mode.
There are several faults / DTCs that can trigger this secondary DTC. The root cause to the error is related to another active OR passive primary DTC. This DTC (fault mode) is also triggered if the Battery Master Switch is opened during driving (driver misuse). In this case no other/primary DTC will be stored.