In Fall took a long trip by car with out any issues. Upon retrun...a couple weeks the trans. began with problems..screeching and then limp mode. NEW TRANS in January. Out of the gate...hesitation on occasion, failure to shift into high, slipping, occasion rough shift..once threw my head back against head rest eventually locked up. Each time I took back for a look at..NOTHING! This happened off and on over weeks. Currently, back at trans place. First they thought it was a bearing and was getting permission to replace with another trans....still under warranty. Since then, with in a hour or 2, they determined it is TCM and $600.00 to replace. If this was the contirbuting factor to initial failure will it have damaged current trans? will this correct issue? ( do you think? any other ideas? To my knowledge there was no leakage at all...had at my regular service center and they did not see any leakage.
where is trans control module located? Will failure of this tcm cause trans fail on 2003 Mercedes-Benz C240 4MATIC
by susienoll in Riderwood, MD on March 19, 2013
ANSWER by hubertlegge on August 11, 2014
Same thing has happened to our 2003 c240 4matic. Did a new TCM cure the problem? Thanks Hubert