To reprogram a key fob for a Mercedes, first, ensure you're inside the vehicle with all doors closed. Insert the key into the ignition and turn it to the "On" position without starting the engine. Press and hold the "Unlock" button on the key fob for about five seconds, then press the "Lock" button while still holding "Unlock." Release both buttons to complete the reprogramming process. If unsuccessful, consult your owner’s manual or a dealership for assistance.
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To reprogram the key fob for a 2002 Mercedes, first, ensure you have all the keys you want to program. Insert the key into the ignition and turn it to the "On" position without starting the engine. Press and hold the "Lock" button on the key fob for about 5 seconds, then release it. Turn the ignition off and remove the key; the fob should now be reprogrammed. If you have multiple fobs, repeat the process for each one.
what answer!
how to reset remote key fob for Mercedes SL 320
C200 key fob problem
You normally do not have to reprogram the key when you replace the battery. If you do you will have to contact your VW dealer.
You'll probably need to have this done at a dealership.
2006 jetta tdi both key remote not working
Put the key in the ignition and turn the key 2 clicks to the On position and press and release the lock button on the fob. Then press and hold the unlock button on the fob 5 times and then release. This will reset the fob for your Mercedes.
the bastards at the dealership have to do it...had it done, not cheap.
Take it to your dealership they would be the one to help you with that.
your key fob can only be programed by the local gm dealer.