A small battery that fits in a key fob or remote.
CR1616
the key fob battery is the battey in a key fob torch
Probably a CR1616. Open it up and see what battery it takes.
Time for a new battery in the fob.
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.
3 button fob 2003 onwards cr1616
Open the key fob up and look see what battery it contains. Buy that exact battery.
Open the key fob and remove the battery which has a # on it, and then buy a duplicate.
what is the replacement battery for a 2003 Honda accord key fob
If you know for sure that the alarm is functioning correctly, but the key-fob doesn't operate - either the fob is faulty or the battery is flat. Replace the battery - if the fob operates the alarm, then the battery was flat. If the alarm still doesn't operate, then the fob is faulty. You can always test the battery with a multimeter - although you may have to dismantle the remote to get at the battery !
You do not have to reset the key fob when changing the battery.
No, You do not need a key fob to start a car. When starting a car, you put the key in the ignition and turn. Power comes from car battery, not from the key fob battery!