Repair Mercedes SL- Class 2003-2008 | TCU 7G Tronic Siemens 722.9

TCU 7G-Tronic seven-speed ( 722.9 transmission) of Mercedes SL class can be very problematic. When this transmission ECU fails, it will cause the following symptoms such as: sharp or poor shifting and sometimes even no gear selection. Using scan tools on the vehicle can reveal trouble codes including: 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.