How to be sure that Valve Body of transmission also needs to be replaced with Conductor plate in W 204 722.9XX mercedes benz
I have 2011 w 204 (C class mercedes 200 CGI Petrol). Last week Check engine light came on. It is not flashing , but continues on even when I drive. Went to MB dealer (I live in Delhi, India). They run their diagnostic and it throws
ERROR 0606 : Component Y3/8n4- Fully integrated Transmission control unit is Faulty
Error : 0705 : Selection range sensor A has electrical fault
The service guy at the dealer says that both Valve body and Conductor plate needs to be changed . My control unit variant is VGS3_0403. I have read that in VGS 3 , conductor plate and valve body are separate.
Hence I do not understand why valve body also needs to be changed and why not problem can be solved by changing only the conductor plate? is the service guy taking me for a ride ?
Thanks for help