21/06/2026
Mercedes with the 5 speed automatic gearbox in with us for a strip down and rebuild 🔥 We did some testing with this car after the customer had told us they were experiencing jerky gear changes and occasional limp home mode due to gearbox issues 😅
On our road tests we identified that the Rpm sensors inside the gearbox weren’t reading properly which caused the TCU and ECU to not communicate and create impossible gear ratios, completely confusing the Mercs’ management system ❌
✅ Murky gearbox oil drained.
✅ Gearbox stripped down to bare and all components completely cleaned.
✅ Replacement Mercedes Benz Transmission control unit installed carefully and correctly to the valve body, New connector plug kit installed for preventative maintenance.
✅ Gearbox filled with fresh, manufacturer correct Transmission fluid + New Gearbox oil filter & All sealed in with a new MB sump gasket, followed by one last clean up before running the gearbox to operating temperature and rechecking fluid levels which were spot on.
✅ Gearbox adaptations reset with our scan tool before test driving and noticing the improvement instantly. No more limp mode and minimal clutch wear sustained during the hardware failure 👌🏻
If your gearbox doesn’t seem right or causes you regular trouble, we’ll find the answer for you and put it right 🔥