Symptoms
Harsh or slurred shifts, or simply no record of a service. The 7G-TRONIC has no dipstick, so fluid level is set by temperature.
The fix, step by step
- Drain the pan, replace the filter and pan gasket, refill with the Mercedes-approved fluid, then set the level at the specified temperature using a scan tool to read transmission temperature.
Tools & part numbers
- Filter and gasket kit
- MB-approved ATF
- fill adapter/pump
- scan tool for fluid temperature
- torque wrench
Where to buy the parts
Febi 722.9 transmission filter kitFCP Euro ↗Amazon ↗
Genuine Mercedes ATF, MB 236.15 (blue)FCP Euro ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G 500 4×4² 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.