Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** am here to assist you Today has the 12 volt feed been checked on the starter motor solenoid with the key in crank position.
OBD2 only really reads the engine ECU / module their are other ECUs / modules to look at but start with checking for 12volts at the starter motor solenoid first using a multi meter.
Then it will need stronger diagnostic software to read all the SAM (Signal Acquisition Modules)
Then it will need the 12 volt feed checking at the starter motor solenoid.
Check for that first then get back to me.