Where do I go to get a spear key for a Honda
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.
go to corvetteforum.com and they have the answer
The batteries in a Ford Mondeo key fob go in with the positive side facing up. This is the more flat side with the writing on it.
go to the gm dealer
what is the reason for not fixing camera in key fob
Go to the dealer, or you may be buying another key soon.
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!
Free On Board (FOB)
C200 key fob problem
You do not have to reset the key fob when changing the battery.
By driving with the key fob in the ignition.