Where is the convenience module on a W140
I am trying to find out what does this module do,where is it located in the car and how much is it to replace? I have recently lost control of the rear windows from the rear seats. I can still control them from the front seat. In addition I have lost control of the recline feature for the rear seat and the rear dome lights do not come on. I am not sure if it is related but my keyless entry stopped working and I can not get the lock buttons to electronically activate/deactivate on any of the doors. I thought that these all seem to be convenience features and that the module could be at fault. I also lose the one touch open/close feature on the windows. Sometimes it works sometimes it doesn't.