Disarm MK2 factory alarm without a working remote control
 

Hello :)

I have recently joined the club of unable to disarm the factory alarm without having a working remote control. The battery was removed for welding work, and the alarm came back when it was reconnected.

I have not found this information anywhere, including on the owner's book.

To disarm the alarm, hold the override button (I have attached the page from the owner book) and turn on the ignition (where the battery, brake, etc lights come on). Simple as that :) You know this will work because the siren will stop immediately. If it did not work, switch on the accessories (battery light), hold the volumetric button and switch on the ignition.



Turn on the ignition as the manual indicates does temporarily stop the siren, however as soon as you turn it off the alarm would had gone off again!

Yes that's correct to disarm it without the fob.

However, the alarm should only re-activate when you lock the drivers door from the outside.

If the alarm sounds as soon as you turn off the ignition, it's faulty. A faulty door/tailgate switch could trigger it too.

The box which controls the alarm is behind the fuse box. there are 2 large boxes, one controls central locking and the other is the alarm. They have large plugs, unpug the alarm box.

Hi MartinObviously,

The issue with mine at least is, even if you start the engine the central console red alarm light did not turn off. The siren would shut up with the engine running, so the car knew I had the valid key.
This meant the alarm was armed and that is why it would go off if you turned off the engine - because you triggered the ultrasonic sensors inside while the alarm was armed.

Once I held the alarm console button and switched on the ignition, the central console red light turned off, indicating the alarm was disarmed. After this, I had no issues with the alarm going off.

Since them, I have bought a Lexia tool to program the remote, and been using the alarm by locking/unlocking using the remote without any issues.