Thread: rear e-diff

Trying to upgrade an open Diff to an eDiff for a 2016 RRs HSE.

Things to Know;

• Topix subscription doesn't have part number for our Australian Region. They want you to deal with the dealers.
• Within the VIN the letters GA, HA etc nominate the years of manufacture and for the RRs August each year is the cut off.
• I needed to find a RMCM ( Rear Diff Control Module), Wiring harness and eDiff from another donor GA vehicle. Stag 4x4 in NZ had the harness and the correct RDCM.
• The RDCM has different connectors from 2016 to 2017 so harness and RDCM should be sourced together.
• I have yet to see if the GAP IID Tool will program the CCF for the car to get the diff working but have since bought a VCI tool from JLR to use the factory tool SDD.
• LR073345 Rear left hand half shaft is required for the eDiff to fit correctly.
• If you purchase an eDiff thats been sitting for a while get the drive shaft input seal replaced.

This eDiff upgrade is not for the faint hearted.

Cheers

You could always take a peek at the diff itself. Even if you can't see the top of the diff to see if a lock motor is fitted, looking forward from underneath the rear the left side of an open diff is flat with a long spigot to the driveshaft whereas an e-diff bulges away from the line of bolts as it houses the clutch pack and has quite a short spigot to the driveshaft.