Hi I am a brand new forum user with a 2001 (newer shape) Audi A4 saloon with central locking issues, this is a long post so please bare with me,

Issue: Alarm sounder started to go off late at nights (not full blown alarm but more a chirping), i thought it was the cold weather affecting a switch/sensor and disconected the sounder in the rear!! then 8 months later the key fobs intermitanty stopped opening the doors but once in the car and started they would work again, now they they stopped altogether.

what have found/achieved to date:
coded both keys, changed key batteries both no effect, i disconected the battery and it all started working again.....until i locked the car!! so disconecting the battery would suggest the electronics are re-setting and all is ok till i lock and leave it, I narrowed it down to when locking, the red light in door does a series of flashes then is solid for 2-3mins, central locking still locks/unlocks ok with key at this point. It is after 2-3 mins the red light flashes constant to tell you alarm is active?, the second this flashes the keys do not work and i have to open manually with key and disconect the main battery to reset. , it would sugest an alarm problem shorting or cunfusing the locking module. My work around is I found if the bonnet is left open the central locking works ok, so i removed the micro-switch from the bonnet catch so the car thinks the bonnet is open and doesn't "set" the alarm fully, i assume this is an electronic fault but am unsure if there is an alarm module or if the problem is the central locking module under the seat, my next plan is to check this module under the seat for connections ect but if I could confirm it is faulty i will change, but they are not cheap!!, any suggestions or similar problems you have solved will be greatly appreciated, and prove if it is this module or other

The central locking is electronic (switches) not Pnumatic

well thats the 1st post from me, i hope for all your sakes they rest are a bit shorter!!!

Also my Audi is registered 2001 but a think it wil be the same shape as the B6 forum, how do i know i have a B6 car??

i await some good solutions!!

Andy