How To Change Battery In Mercedes Key Fob 2014. I then took the battery out and checked the voltage on the new battery and it was low. You insert the key in the ignition of your mercedes benz but nothing happens.
There are several mercedes smart key remotes so make sure to look at the correct video. ( fob ir old type leave fob off the key) turn to number 2 and press fob till doors lock and unlock. Check your door lock cylinder.
Pull the tab at the bottom of the key fob.
#2 · apr 17, 2018. I would change the battery out of the key fob with a new one and it will work for a few minutes before appearing to go dead and stop working and if a change the battery out again with another new one it will work again but only for a few minutes before that battery stops working as well. It is also possible that the key fob itself has a malfunction that is causing the light to come on. A keyless remote offers great convenience.