For the 2000-GS300 you will need #000 Philips screwdriver, remove the small screw and pry the case open nearest the screw hole. The upper portion of the case has a strong snap like hook that holds it together. Its pretty hefty and seems to be the only way to open it. Inside you will find a module about the size of a quarter that has two more #000 Philips screws securing it. Remove them and under that cover you will find a CR1616 battery. Use a small flat blade screwdriver to lift the free edge of the battery and slide it out away from the retaining tabs.
For a Lexus IS 250 /AWD Key-less Entry Key FOB 2006 and newer:
1. Take out the mechanical key from your fob.
2. Put a flat head screwdriver into the inset space...just inside of the mechanical key slot....and gently turn/pry it. This will pry open the fob.
3. Remove the old battery and replace with a new Panasonic CR1632 battery..positive side facing up.
4. Replace the cover of the fob by first pressing on the bottom then the top (The top is the side where the mechanical key is inserted)
CR1616
CR1616
Open the key fob, remove the battery and look and see what size it is.
Use a dime to open the key fob battery door on the key fob. New batteries are typically available at Radio Shack. Salesperson at same usually know how to open it.
How do you change the battery in mazda 5 key?
Open it up and check and see.
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
Panasonic CR 1616
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.