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paul&hazell
Guest
Hi everyone, i'm new to this and know i've probably posted in the wrong section so any help is appreciated!! I have a fault on my A-class 51 plate 170cdi tiptronic. It went into F mode one day and i had it plugged in to find the fault. It seems to be the gearbox control valve module that is faulty. Merc wanted nearly £900 for the part alone so i managed to find a new one from Germany at £500. I was told it would come programmed with prefix 26 which Merc confirmed is what i needed however when the new module was fitted the car went dead, worse than before, it seems the unit is not programmed and Merc are useless at offering any help. Does anyone know if and how these modules can be programmed at this stage or any other help would be really appreciated. Thanks