View source for WIS 27.35 Valve Body Housing

'''W220 722.9 Speed Sensor and Valve Body Repair'''

NB You cannot DIY this job as flashing of Transmission Electric Control Module requires using a new Software Calibration Number (SCN) and entering the new SCN coding number into the ETC with SDS.

Fortunately several companies specialize in re-manufacturing your Mercedes-Benz 7 speed transmission Valve Body TCU/EHS/7Gtronic Speed sensor plate and provide a 1 year warranty on all speed sensors. Most units are re-manufactured within 24 hours, this includes re-engineering of all the original speed sensors circuitry to prevent repeat failure. They also include a before and after test on a purpose built speed sensor simulator to ensure your unit is re-manufactured to the highest standard. As long as they re-manufacture your unit, there is no need for the additional cost of SCN coding or adaptation.

Common symptoms include:

Transmission holding in gear, flaring between gear changes, slipping in all gears, loss of all drive and unable to select drive. These symptoms usually start off intermittently and become more frequent until total failure.

Common fault codes are:
* Fault code P 2206 Fault code P 2207   Fault code P 2200   Fault code P 2201   Fault code P 2205   Fault code P 2204
* Fault code P 2767 The signal from component Y3/8n2 ( Internal speed sensor (VGS)) in not available.
* Fault code P 2768 Component Y3/8n2 (Internal speed sensor (VGS)) is defective.
* Fault code P 0717 The signal from component Y3/8n1 ( Turbine speed sensor (VGS)) is not available.
* Fault code P 0718 Component Y3/8n1 (Turbine speed sensor (VGS)) is defective.
* Fault code P 0722 The signal from component Y3/8n3 ( Output speed sensor (VGS)) is not available.
* Fault code P 0723 Component Y3/8n3 (Output speed sensor (VGS)) is defective.

Common part numbers include:

A0002701700   A000270170080   A0335457332    A0335456732   A0034460310   A2202702906   A2202702706   A2202703106   A2202703206   A2202701206   A2202702106   A2202701806   A9062700006   A2202701306   A2202701506   A2202702806   A2202701906   A2202702206   A2202702406   A2202700026   A2702702306   A2202700160   A2122700006   A2122700106   A2122700106   A2202701406

DIY TCM Removal and Replacement by beaman220

http://www.youtube.com/watch?v=gzuXLRXXcew