Repair Mercedes ML-Class 2003-2008 | TCU 7G-Tronic TCU Continental 722.9

The 7G Tronic TCM (also called 722.9 ) of Mercedes ML-Class is known to fail often, causing the vehicle to jerk while shifting gears. In more severe cases, the vehicle may not start at all and in this case diagnostic communication with the TCM may not be possible. Common error codes generated by a fault are: 0717 – The Signal From Component Y3/8N1 (Turbine Speed Sensor, VGS) Is Not Available, 0718 – The Component Y3/8N1 (Turbine Speed Sensor, VGS) Is Defective, 2201 – The Component Y3/8N2 (Internal Speed Sensor) Is Defective. Many of these problems can be solved by repairing the transmission module.