Battery in Key fob

I have a twin button key fob and I want to change the battery . If I take the battery out will I have to reprogram the fob ?? Plus what battery do I need ??

I think its the battery in the fob as it's not opening the CL and disarming the immobiliser .

Cheers Mick

Simple answer, no.

simple repost ............ ta

Just make sure you hold the new battery on it's rim and not on it's faces

will do mukka

If its intermittently 'faulty' it could be the battery holder losing contact with the circuit board as a result of duff soldering!!

Mine is/was intermittent - took it to my mate who is a locksmith/cobbler - he cracked it open and all sorts of bits of foam fell out. Then we discovered the hopeless soldering job holding the battery holder on by only one of its three contacts.

A liberally folded piece of card, carefully placed and secured now holds it in place until I get around to soldering it properly.

If I remember - battery is a CR2032 - cheap as chips - pay no more than about a quid or so for a decent brand.