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2012+ ML, 2013+ GL W/X166 KeylessGo Connection
The KeylessGo connection for the 2012 ML is quite involved and requires significant disassembly of the rear of the vehicle. This
guide assumes the basic XPRESS
START
Mercedes Solution is installed and functioning properly.
Tools and Parts you will need:
•
E14 Torx Socket - ML only
•
T30 Torx Driver - GL only
•
T45 Torx Bit
•
T40 Torx Bit
•
Panel Removal Tool
•
Pick tool
•
KG20 Harness
ML Installation
1. Remove the driver’s rear door sill plate.
2. Fold the driver’s rear seat bottom forward.
3. Remove (2) bolts holding the seat bottom to the floor.
4. Remove the driver’s side rear seat bottom from the vehicle.
5. Remove (1) bolt holding the center seat back bracket and (1) bolt holding the seat belt.
6. Fold the rear driver’s side seat back down.
7. Pry up the covers for the tie down loops in the cargo area.
8. Remove the bolts from each tie down and remove the hooks from their mounts.
9. Remove the cargo cover.
10. Remove the foam inserts directly behind the rear seats.
11. Remove (2) additional bolts that hold the driver’s side rear seat back.
12. Unclip the wire harness that is clipped to the driver’s side rear seat bracket.
13. Flip the driver’s side rear seat back into the cargo area making sure the wire harness doesn’t get pinched or pulled beyond its
limit.
14. Pull up the carpet to access the KeylessGo module on the floor.
15. Route the supplied KeylessGo harness from the XPRESS
START
module to the rear seat area.
16. Unplug the main connector from the KeylessGo module.
17. Remove the shroud from the main KeylessGo connector.
18. Remove the brown and brown/red wires from the KeylessGo plug. Make a note of the wire locations in the plug.
19. Insulate the ends of the removed wires.
20. Using the supplied W166 KG adapter, populate the brown and brown/red wires into the locations where the factory wires
were removed.
21. Reinstall the shroud for the KeylessGo main plug and plug it back in.
22. Close all doors, hood and hatch to test the remote start.
23. Remote start the vehicle. If everything is connected properly, you should be able to lock and unlock the vehicle using the touch
sensors on the door handles while the remote start is running.
24. Unlock and enter the vehicle. Push the start button one time. The lights should flash three times to confirm key take over.
25. Turn off the vehicle.
26. Secure the KG20 harness to existing wiring.
27. Lay the carpet back in place.
28. Remount the seat back and seat belt. Make sure the wire harness is clipped back into place.
29. Fold the seat back down and install the foam inserts and the cargo cover.
30. Reinstall the cargo tie down hooks.
31. Fold the seat back up.
32. Reinstall the seat bottom and bolt it in place.
33. Reinstall the sill plate.
