Vehicle immobilizer

Here is a guide that talks about this and has some tips from the dealer on how to reset this:

https://www.2carpros.com/articles/how-to-reset-a-security-system

If this doesn't work, try putting the key in the ignition and turn it to the on position and let it sit there for up to 30 minutes or until the theft light turns off. This is assuming the theft light remains on.

Let us know if any of this is successful. If not, we need to check for codes and see if there is something pointing us in the direction of the issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Hello,

Are you trying to reset the door locks anti theft or the no start immobilizer? this guide will help you reset the security system in your car.

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please let us know if you need anything else to get the problem fixed.

Thanks,
Alex
2CarPros

Unfortunately it'll be almost impossible to know the extent of the damage caused by your "Smash", even if you attempt to tell me. If you're handy with a voltmeter and can read a diagram, you may be able to trace your issue. But keep in mind, the module that controls your alarm could've also been damaged. I know you want to save money, but having the system disabled and just purchasing an off the shelf alarm may be your best bet, as they are cheaper than factory systems and MUCH better as long as they're installed correctly.

Yes. They may not even remove it but disable it. The sensors and wires could be used by another system, or they may just replace the sensors and use the wires since they're already routed. It depends on the install shop. But they're most certainly going to be less expensive than a dealer.

No problem. Write back if you have any more problems.

This to the best of my understanding cannot be done. Alarm systems apart from after market units are built in so they cannot be tampered with, if they could it would undermine the whole idea of having a security system.

Did this car originally have remote door locks and you do not have the remotes? Most of the VW's of that year should have remotes that deactivate the alarm when you unlocked the doors. The system should also disable if you unlock the drivers door with the correct key. If you have a bad key or one that is not programmed into the system it may mechanically unlock the door but not disable the alarm. If disconnecting the battery works then it is likely a faulty key. For that you can have an automotive locksmith check the key or make and program in a good one. VW integrates the alarm into multiple parts of the system (on that car it is part of the stereo, the security module, the ECU and even the instrument panel) which makes it very difficult to defeat for the reason MHP stated.

You can try disconnecting the alarm module. It is located under the driver's side of the dash above the fuse block. ALSO, you may just need to have your keyless system re-programed to your remote buttons. I would call VW on this first.

The door lock actuator has a faulty micro switch. You need to remove the door panel to remove
the lock assembly.

There is a switch that tells the alarm that you are locking/unlocking the door and there is a
switch that tells the alarm that the door is open or closed.

Thomas