ABS not fully operational
â–¶ How to fix
Examine the brake system.
What you'll see
No driver-visible symptom recorded.
System reaction
Reduced auxiliary brake function. Auxiliary brake only available through the auxiliary brake lever. The auxiliary brake will not disengage when the accelerator pedal is depressed. The auxiliary brake is disengaged when the hand lever is returned to its top position.
Diagnostic depth
Detection
Continuous control. Fault code is detected when driving above 10 km/h.
Possible cause
There is no information from BMS as to whether the ABS system is working correctly.