Hello all, i have alittle problem with my a class. It's a 140 auto. After about 6 miles the BAS light comes on and speed is limited to 30mph. I have pluged my scanner in and checked all systems, all showed no comunication with transmission and i was unable to comunicate with said control unit till switched of and left for a bit. Once comunication made there are various impluasable signals and no signal on all sensors so i am after information on pin data for transmision ecu, 12v supply and earths so i can check as everything is pointing to the transmission ecu driopping out.
Any info is much appreciated