Factory/Dealership Fitted Alarm

[RobWill116]

Hi all,

Wondered if anybody can help with a factory/dealership fitted alarm and remote central locking on my 1990 325i SE? There doesn't seem to be much info out there on these, but I understand it is a 3G mk1 system (black single button fob with corner missing) - I believe these were fitted to e36 too.

This has been working perfectly until recently, becoming intermittent - battery in both fobs are new.

I have found what I understand is the alarm module and remote central locking module in the glovebox -

BMW 82119418402
BMW 82119418403

Strangely there are two alarm modules (same ..402 part no) - each have a blue loose cable (both male connectors).

I believe the potentials issues could be -
1) Battery in module needs replacing - not clear from what I have read these model has a battery
2) Loose earth somewhere - unable to find the earth for these

Anybody else have one of these fitted and can shed some light or tech specs?

Pictures attached.

Thanks, Rob

[RobWill116]

Anybody able to help here?

[TooFoxyForYouu]

Did you find out any info as I have the same setup

[RobWill116]

Bump. Can anybody shed any details on these set-ups? Can't seem to find much info anywhere.

Remote central locking is now work after cleaning up earths - but now the windows do not automatically close when I lock the car with the remote.

[jas025]

I replaced the batteries in the alarm module under the bonnet in this thread below. It's still working well - does get upset if i let the battery go flat but the car is kept on trickle charge. I've not got the window closure but do have central locking. Best of luck!

viewtopic.php?f=2&t=249036