The fob must be gently pried apart, the electronics unit removed, the battery replaced, the electronics unit reinstalled, and the fob snapped back together. Your owner's manual should tell you how, if not ask your dealer.
How do you change the battery in mazda 5 key?
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.
Read the owners manual that came with the car. Key battery replacement details are in there.
Take off key chain. Use a coin to pop open fob. Button battery inside
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.
the key fob battery is the battey in a key fob torch
Using a screwdriver, gently prise open the end of the key fob. Open the battery door and remove the battery. Now you can replace it. It can be quite tricky, so be gentle and make sure it snaps shut properly when you are done.
CR2032
I don't no how to do it
To change the battery, just take a coin and insert it in the whole at the bottom of the key fob, twist it and it will pop apart. Battery is right inside.
First, one needs to press the button on the key fob to release the key and flip the fob open. A small tab will then be visible. Push the tab in and the the key assembly should easily slide out. The user should then take the half without the key and open it with a regular flathead screwdriver. It takes one 1620 battery.
The fob has a pry slot and prys apart.