Experienced Mercedes-Benz 722.9 (7G-Tronic) specialists since 1987. Free computer diagnostic, lifetime warranty on rebuilds.
The 722.9 (marketed as 7G-Tronic) was Mercedes-Benz's 7-speed automatic, used across nearly the entire lineup for over a decade. A sophisticated transmission with an integrated TCU — failure of the conductor plate (internal wiring harness) is the signature failure. Sprinter vans with the 722.9 are a major part of our Mercedes business, as fleet operators in Chicago run these hard.
| Speeds | 7 |
| Type | Automatic RWD/4MATIC |
| Fluid | Mercedes-Benz 236.14 or Shell ATF 3403 |
| Fluid Capacity | 10.5 qts |
| Max Torque | 700 Nm |
The conductor plate is an internal wiring harness integrated into the valve body. Heat cycling causes conductor traces to crack or corrode, causing solenoid failure and shift codes.
Symptoms: Multiple shift solenoid codes (P0740, P0750, P0755, P0760, P0765), limp mode
The external TCU (Y3/1) can fail due to heat and age, causing transmission to go into limp mode or not shift at all.
Symptoms: Transmission won't upshift, limp mode, no response to gear selector
Valve body bore wear from extended service or wrong fluid causes erratic pressure and shift quality degradation.
Symptoms: Harsh shifts, hunting between gears, delayed engagement
TCC failure causing shudder is common in the 722.9, particularly in E-Class sedans used primarily in city driving.
Symptoms: Shudder at 30–50 mph, P0741
"Honest diagnosis, fair price, and the repair was done right. Chicago Transmission has been my go-to for years. Wouldn't trust anyone else with my car."
"The free diagnostic alone was worth the trip. They found the problem fast, gave me a written estimate, and completed the work on time. Exceptional service."
"Family owned and it shows. They treated my car like it was their own. The lifetime warranty on my rebuild gives me total peace of mind. Highly recommend."
It's an internal wiring harness embedded in the valve body that connects solenoids to the TCU. It's unique to the 722.9 and fails predictably from heat cycling.
If the clutches are in good shape, yes. A conductor plate swap ($600–$950 installed) can restore normal shifting. We'll road test and pull codes to decide.
Yes — most 2004–2018 Sprinter 2500 and 3500 vans use the 722.9. Fleet operators rely on us for Sprinter transmission work.
Mercedes-Benz 236.14 or the equivalent Shell ATF 3403. Never use generic ATF in a 722.9.
4–6 days, including sourcing the conductor plate and programming.
Bring it to Chicago's most experienced Mercedes-Benz 722.9 (7G-Tronic) shop. Free diagnostic, written estimate, no obligation.
