Mercs are different (and the Crossie is really a SLK320/R170.


Torque Pro & the Actron cp9180 OBD will show generic OBD-II codes but you need a real Merc scanner or a specialized indy (like an Autel DiagLink or iCarSoft MBII) to read the internal codes since Mercs save everything.


Still, if TCM (tranny module) is not releasing from Park and there is no dash display of gear, sounds like no CAN-bus communications and a code should be being set as soon as it starts. (Never say never).


Spilled some water in mine and until it dried out was acting just like yours.