Key does not work from distance
Can someone please help me narrow down where the issue might be for an 07 E350. Is it the AM antenna, dome light, or something else. Someone also pointed out doing a software upgrade. I have a two year warranty on the car so hopefully if it's something more involved my warranty will cover.

It could be a rear SAM issue. On a 211 you should try to reset the rear SAM. Unfortunately at home you can only do it be detaching the battery cable for a few minutes. You would have to do this carefully because you can break the SAM otherwise.


