Key fob battery change

[jamieduff1981]

Apologies if this has been done to death. I did a search and couldn't find what I was looking for...

Can anyone tell me how to change the battery(ies?) in the Cerbera alarm fobs? One of mine seems a bit useless. I opened up the fob but the contact is soldered across the top locking the battery in. Do I need to de-solder it?

If I do change the battery, will it still work or need reprogramming of some description?

Thanks all. Just off out to get some stuff to give it a good clean whilst I can't drive it

[C3BER]

Mine slides out.

[C3BER]

As for resetting. No it didn't but there does seem to be a difference on this process depending on age.

Do you have two fobs?

[Tanguero]

The battery should just slide out. Neither of the models of the Meta alarm commonly fitted to the Cerb (M99T - factory fitment, M99T2 usualy used as a replacement when the original dies) need the fob re-synchronising after a battery change.

[Mr Cerbera]

On my 2001 4.5 I had to 'crack' the two halves of the Fob open with a fine screwdriver. The internals were thus ....



and the Fob just clipped back together.

[jamieduff1981]

Ahh - I assumed the black plastic ring was fixed down to the PCB - I don't like trying to force things until I've checked!

Thanks folks!

[Mr Cerbera]

Understand what you mean. I think the two halves were located by two pins as well as the 'clip' faces. PCB just fell out IIRC.

HTH.

(p.s. Dont't know about you but I always have my two demons on my shoulders. One saying, "Go on, you puff. Hit is wth a bigger hammer !"
and the other saying "Careful you Clot, You're gonna break it !"

[FUBAR]

Real mean only have the first devil. You must be a right ole shirt lifter Mr C!

[jamieduff1981]

That's the batteries changed in both fobs, and both now lock/unlock the car from the upstairs windows. Previously only one worked and that was only if you found a sweet spot at the driver's side window.

[Gazzab]

There are two types of fob ie a black square one and a grey round one. The former being the factory spec and the latter the replacement ones afaik. The grey ones seem to be more robust.

[m60ddy]

Gazzab said:

There are two types of fob ie a black square one and a grey round one. The former being the factory spec and the latter the replacement ones afaik. The grey ones seem to be more robust.

I have one of each. The grey round one is my main user, the square black is my spare. Both now work fine.

M

[FUBAR]

Typical TVR, I have a black square one (Carl Baker replacement) and my round factory one is brown tortoise shell

[Mr Cerbera]

FUBAR said:

Real mean only have the first devil. You must be a right ole shirt lifter Mr C!

Gotta be true after too many weekends in the Blu Oyster, unconscious, with you!