Symptoms
A locker indicator that flashes or stays dark, or a lock that engages slowly or drops out.
The fix, step by step
- Check each stage separately and read fault codes with a scan tool.
- Then inspect the actuators, wiring and connectors at each axle, where mud and water collect.
- One Bring a Trailer truck's records list a diff-lock system service by a G specialist.
Tools & part numbers
- Mercedes-capable scan tool
- multimeter
- contact cleaner
Where to buy the parts
GwagenParts.com search: differential lockGwagenParts.com ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G 63 AMG 6×6 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.