How To Change Battery In Mercedes Key Fob 2014. If you have any trouble, we can always show you how to perform the process at our service center. Then, push it into the narrow opening to unlatch and loosen the cover.
You shouldn't get the low battery message until the battery drops below 3v. If you have 2 fobs you will need to. At the end of the key holder, pull the latch and stick your key into the open slot.
I had another battery that measured more voltage and tried it and now everything works.
Replacing the battery is easy and takes less than $20 min. You insert the key in the ignition of your mercedes benz but nothing happens. Ok, looked up the type of battery, bought one, inserted it, all done. Recently my 2014 e350 gave me a message, on the instrument cluster, to replace the battery in my key.