Rear Driveline Module (RDM) Fluid Level Check

NOTE:

The rear differential oil change is not a scheduled maintenance service.

NOTE:

The Rear Driveline Module (RDM) oil must not be drained during normal level checks.

NOTE:

Be sure the vehicle is on a level surface, or is hoisted in a level manner, in order to obtain the correct fill level.

NOTE:

If this procedure is not carried out as described exactly, including waiting times, the oil level may vary by more than 3 mm (.118 in.).

With the vehicle in SNOW mode, drive at 30 km/h (19 mph) for 5 minutes.
Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
Remove the Rear Driveline Module (RDM) oil fill plug.

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1 - Oil Fill Plug
Insert a suitable hex wrench in the filler hole to submerge the short arm of the wrench in the oil holding the long branch perfectly horizontal.

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1 - Hex Wrench/Oil Fill Hole
Very carefully remove the hex wrench from the hole.
With a digital caliper, check that the position shown in the figure is comprised between 13-15 mm (.51-.59 in.).

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If necessary, add the specified fluid. Refer to CHASSIS SYSTEMS .
Clean the RDM fill plug and install a NEW gasket. Install the fill plug and tighten to the proper specification. Refer to TORQUE SPECIFICATIONS .