Interior lights don't take much to operate. Sounds like it may be time for a new battery.

I've never seen much sense in paying MB for one of theirs; that's just my opinion.

I've used Interstate and currently have an A/C Delco going on 4 yrs - clean - no leakage.

Batteries are like oil - lot of opinions.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"