2005 Mercedes-Benz S500 4MATIC Q&A

2005 Mercedes-Benz S500 4MATIC Question: battery went dn, I got a jump. know when I lock door fog lights flash.

when I use my automatic key to lock the doors fog lights flash, alarms are going off not sure what's happening. -
Answer 1
Pretty sure this car uses an additional battery for accessories.That may be going dead.I would take it to a shop that is equipped to work on Mercedes.They should have a Xentry diagnostic tool.(We have 2 here)Some settings may need relearning. -
Comment 1
Thank you for your response, I do plan on taking it to a Mercedes dealership. I also have a problem with squeak in the front when I hit a bump, I just wanted to have an idea of what I was looking at before I took it to the dealership. Thank you, -