Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi, my name is ***** ***** before I'm able to help I need to know the year and model of your Mercedes?
Yes the first thing I would do is replace the key as long as you are sure the vehicle's main battery is not dead.
No, the locks need battery power to operate. Does the dash light up when you open the door or anything? If it does, then the vehicle battery is not dead.