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

when I use my automatic key to lock the doors fog lights flash, alarms are going off not sure what's happening.

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.
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,