| Dead Battery
After leaving my ML63 sit in a garage for 5 days I went to start it and .... no go.... dead/very very low battery.
Jump started it with no problems.
Reason for dead/low low battery: I left the key (keyless go) on top of the front left tire so apparently because the key was close to the vehicle it runs the vehicle battery down slowly. I had heard that this could happen from a friend of mine who has an S550 so I looked thru my owner's manual and couldn't find any warning of the sort so I thought it wouldn't happen to the ML. Wrong! I asked the dealer's service writer and he wasn't aware of it...although I didn't ask a service tech.
So bottom line is don't leave your key (if you have keyless go) in close proximity to your vehicle for a long period of time or......quite possibly you'll have a dead/low low battery.
Dave | 
