Keep fob wouldn't work. Replaced [battery](/topics-batter...


Keep fob wouldn't work. Replaced [battery](/topics-battery-mercedes/) in fob and went thru program steps. Still not working. A beeping sound is heard inside the car. Car won't start with key in either. All was working fine yesterd...

Keep fob wouldn't work. Replaced [battery](/topics-battery-mercedes/) in fob and went thru program steps. Still not working. A beeping sound is heard inside the car. Car won't start with key in either. All was working fine yesterday. Mechanic's Assistant: Did the fob come with the vehicle, or did you buy a blank? Came with the vehicle. I have 2. Neither works. Bought this car used so presume these are original keys Mechanic's Assistant: What is the make/model/year of your car? 2007 mercedes ML350 suv Mechanic's Assistant: Are you fixing your ML350 yourself? What have you tried so far? Replaced the key battery then went thru key steps Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Just need the key to work. Whatever that takes

Automotive Expert
Hello my name is\*\*\*\*\* will be assisting you today. I hope your day is going well so far. May I ask your name? also if you open the car door and hear a constant beeping, that normally means that your main battery is dead. the beeping is coming from the dash due to the aux battery keeping the dash alive. I suggest try to jump the car however if the battery is extremely weak then most times jumping is ineffective so you may have to replace the battery to start.

Hello???
Automotive Expert
yes hello did you see my recommendations?
Automotive Expert
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