ancuislean
New Member
- Joined
- Nov 5, 2010
- Messages
- 7
Hi, Looking for advice, I have a 2007 E220 CDI, it was caught up in some minor flooding and water got into the footwells. The car is going very well aspart from the orange engine management light being on permanently. I got it switched off at the weekend. The error message on the diagnostics was ' Lost Communication with TCM '. The light stayed off for about 10 miles before coming back on. As I said the car has full power with no apparent problem. The passenger side modules mounted to the tin plate were replaced, I was given the original modules, I checked the 'new' replacement modules and discovered that they were salvaged from another car and had different numbers, The original module is a Siemens VDO EGS53, 5WP20124AK, Merc Ref A0015453116. with TCM. I suspect the replacement may be the reason for the light staying on. My questions are ( 1 ) is this passenger side footwell module the TCM. ( 2 ) Does replacing this module require star type diagnostics to tell the car it is replaced. ( 3 ) are these simply plug and play or do they need exact matching. ( 4 ) Is this likely to be the problem or would you be looking somewhere else. ( 5 ) Am i correct in saying that this unit is not the ECU. Any help / guidance would be appreciated. Thanks,