No ! you need to _drive_ the car so the alternator spins up fast enough to charge fully . take a long drive to a remote coffee shop or whatever .
Find a sloped street with a driveway and drive both right side tires up on the curb then slide underneath with a good flashlight to see / find the exhaust leak .
Choosing a street that slopes away from the curb means it won't be full of icy slush /water, etc.
SAFETY WARNING ! a Mercedes weighs about
THREE TONS so if it slips off the curb because you didn't position it properly, YOU'LL DIE
.
Consider this carefully before going under neath it or any other curb supported vehicle .
YOU HAVE BEEN WARNED .