Mercedes-Benz W212 7G-Tronic (722.9) Automatic Transmission - Used Original Parts

Diagnosis and Common Symptoms

From the workshop floor, the 722.9 transmission is a sophisticated unit, but it has well-documented failure points. Most issues we see are not catastrophic mechanical failures, but rather electronic or hydraulic faults within the valve body assembly. Initial symptoms often manifest as harsh 1-2 or 2-3 shifts, delayed engagement into Drive or Reverse, or a noticeable shudder under light acceleration (often a torque converter lock-up clutch issue).

When the internal conductor plate (VGS) fails, the vehicle will typically enter "limp home mode," locking it in a single forward gear. You will see the "Transmission - Visit Workshop" message on the instrument cluster. Diagnostic scans will frequently reveal fault codes such as 0717, 0718 (Turbine Speed Sensor Signal), 2767, 2768 (Internal Speed Sensor), or codes pointing to faulty solenoid valves. Ignoring these symptoms can lead to premature clutch pack wear.

Introduction

The 7G-Tronic transmission is the heart of your W212's driving experience, and a faulty unit can be a complex and costly repair. We offer a practical and reliable solution: a Genuine Mercedes-Benz 722.9 transmission, carefully removed from a donor vehicle. Each unit is rigorously tested on our bench to verify the hydraulic integrity of the valve body and the electronic response of the conductor plate. This ensures you are installing a fully functional component, saving significant time and expense compared to a new replacement.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W212 E-Class. Also found in various C-Class (W204), S-Class (W221), and CLS-Class (C218) models. Always verify the part number against your original unit.
• Part Name: 7G-Tronic (722.9) Automatic Transmission Assembly (Includes Torque Converter and Valve Body/Conductor Plate)
• Condition: Genuine Used (Tested Working)
• Notes: Unit is shipped drained of fluid. Must be filled with the correct specification fluid (MB 236.14 or 236.15). The integrated control unit (VGS) is VIN-locked and requires SCN coding or data cloning from the original unit for proper operation.