P0741 on a Mercedes-Benz: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

A Mercedes-Benz with P0741 is drivable, but the torque converter won't lock up, so fuel economy drops and the transmission runs warmer.

What P0741 means on a Mercedes-Benz

On a Mercedes-Benz, P0741 means the torque converter lockup clutch isn't engaging as commanded. The 5G-Tronic and 7G-Tronic automatics use a lockup clutch for highway fuel economy, and a worn clutch or a fault in the electronic conductor plate can set this code. It's a performance fault in the hydraulic or electronic control system.

Is P0741 common on Mercedes-Benzs?

P0741 on Mercedes usually appears on higher-mileage cars and often traces back to old transmission fluid or the conductor plate inside the transmission. A fluid service and a scan of the transmission control unit are the typical first steps before any parts are replaced.

Commonly reported on: C-Class, E-Class, S-Class, ML.

Symptoms

Check engine light on
Higher RPM at highway speed
Reduced fuel economy
Possible harsh or delayed shifts

Common causes

most common: Old or degraded transmission fluid
common: Worn torque converter clutch
common: Conductor plate or transmission control unit fault
less common: Low transmission fluid from a leak
rare: Wiring or connector issue

How to fix it

Fix	DIY?	Typical cost
Check the fluid level and perform a transmission fluid service	Mechanic	$300–600
Replace the conductor plate or repair the transmission control unit	Mechanic	$600–1600
Replace the torque converter if the clutch is worn	Mechanic	$1500–3500