Rear Drive Axle and Differential
The axle assembly, is driven by the engine through the transaxle to the power transfer unit (PTU) through the driveshaft to the active on-demand coupling. The differential electronic module (DEM) on the active on-demand coupling regulates how much torque is applied to the axle assembly and half shafts. The DEM monitors front wheel speed and rear wheel speed to determine how much torque (up to 1,000 Nm at the coupling) to apply to the rear wheels. The DEM uses oil pressure via an oil pump and a solenoid to regulate torque through the active on-demand coupling.
The axle assembly uses 2 types of lubricant. In the rear of the axle assembly it uses SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL. In the front of the axle assembly it uses Volvo Transmission Oil 116-1641.
The axle assembly consists of the following components:
- Differential electronic module (DEM)
- Active on-demand coupling
- Rear axle housing
- Rear halfshaft (RH)
- Rear halfshaft (LH)
The vehicle certification (VC) label is located in the driver door jamb. The axle code is on the VC label. For additional information on the VC label, refer to IDENTIFICATION CODES .