Remove the valet key from the fob and behind it is a small Phillips screw. After that the fob will split and the battery is visible.
To replace the battery on a Mercedes ml 350 key fob it is probably best to ask the supplier where it is purchased or there may be some instructions online.
put new battery in
on the key fob, turn the key over so that the buttons are on the back. there is a small groove near the blade/key end of the fob. you can prise this open using a small screwdriver or if you're strong pull the blade/key part outward/away from the fob. the remaining key fob can then be split in two to get at the battery. beware that you only have a very short time to replace the battery or the fob will go out of sync with the car.
Yes you can just change the battery
the key fob battery is the battey in a key fob torch
Changing the battery on a Viper alarms key fob is very easy to do. The back of the key ob. comes off and the battery is located inside. Simply change out the battery with a new one and replace the back of the key fob.
with a fine blade or knife, prise open the key fob from the back. Remove the two batteries inside and replace with new ones. The fob will snap back into place after
Changing a Mazda 2 battery in the key fob is quite simple. You will need to use a flat head screwdriver to pry open the fob. You will then take the battery out with the screwdriver and replace it.
go to radio shack
Take the spare/valet key out of it's holder on the fob. In the slot, under where the head of the valet key is stored, is a grey slide lock. Using the valet key or a similar tool, slide the gray lock under the body of the rest of the fob. This will unlock and push up the top of the fob. Pull out the internals and replace the battery. Two CR2025, in my key.
Changing the battery in the key fob to a Pontiac Solstice is pretty simple. Just remove the back of the key fob, and take out the old battery. It takes a hearing aid battery, and they can be found at any chain pharmacy. Put in the new battery and replace the back to the key fob. It is now ready to go!