johnyboy

Hi from Québec, yesterday after a big rain my problem start with The radio stop, then the DSR message(not working) the cluster shut down and reboot few, the red battery seing/ red brake/flashing on/of , the transmission harsh down shift, i lost right and left signal flasher, the check ENG com on with the message drive to the dealer in that gear . At this time i was unable to put the transmission on revers.
I put the transmission on park with the hand brake on, after that i was unable to put back on forward, with cluster message (tempomat doesn't work).
I run a scan: all modules show not equipped, there is no communication: the key is on, i know how to do it. I was tech in a car dealer. Is some one have info on that?
I suspect the cluster circuit or a relay that fail or a fuse, or a short in the communication circuit, but i d'ont have the wiring diagram.

MJ50

moved to W164 forum...

vesiadog

Check the rear Sam in the passenger side rear compartment below the fuse box. Very likely it got wet from the rain either sun roof or rear light gasket leakage.

johnyboy

I have recently replaced the rear sam and I fix the water entry at the rear end thank for this info. I found water under driver seat in the well where the audio Distronic ampli, the gateway module that were submerged and corroded.
Now I am looking for the network diagram.