Good afternoon! I have a 2007 ML-63. Randomly, my key fob started to not lock the doors. I changed the batteries and it worked one time and then stopped working and will work every once in a while. It also started to not start. It acts as if there is no key. Sometimes the key will turn but the car instantly stalls. Sometimes it starts, sometimes it doesn't. Is this a key fob issue or something to do with the electrical system? Any insight you could provide would be greatly appreciated!

 

ML63 I am sorry to tell you this -= but only way out is to get your alarm fixed . The alarm as a fault and to find it is like looking for a needle in an hay stack.