Symptom Chart

SYMPTOM	POSSIBLE MESSAGE	POSSIBLE CAUSE	ACTION
Rumbling noise from the rear of the vehicle varying at different vehicle speed and load	N/A	Rear differential internal failure Road noise Worn or damaged driveshaft joint Wheel bearing Another component contacting the front/rear drive halfshaft	Using the manufacturer approved diagnostic system run application Noise, vibration and harshness diagnostic test - Rear differential
Running at reduced capability with fault present	N/A	Water ingress to wiring harness or connectors Reduced differential capability Differential increased tolerances Internal fault Rear differential control module fault	Check for stored DTCs and refer to the DTC index. Visually inspect the wiring harness and connectors for water ingress
Rear differential overheat	Rear Axle Overheat	Oil level incorrect Oil level incorrect specification Sensor fault Internal fault	Check for stored DTCs and refer to the DTC index. Check for correct oil quantity and specifications. Refer to the relevant section of the service information
Excessive steering effort	Rear Axle Fault	Sticking or stuck actuator	Check for stored fault codes and refer to DTC index