How do you change the battery of a car?

Based om the battery price it is probably the cheapest approach to call the 24Hr Road Side Assistance for MB and pay like $175 plus tax. They will come to where ever you are and do ALL of the needed things.

Those things are...

1- they replace your battery

2- they remove / take away the old battery

3- reset your radio code (assuming you got it in your book - or you call the seller dealer) and they will have the code

4- re-sync your remote keys

it is cheaper than doing it at the dealer by about $100 !!!