So after all these years my car has finally gone wrong, the alarm system has started going off randomly and I'd like to permanently disable it without affecting the central locking or the immobiliser, can I just pull a fuse or is it more complicated than that?

What year is the car? On the first diagram I looked at, the same fuse goes to interior monitoring sensor and central convenience module. Latter might be disrupted undesirably.

 

Could try just pulling fuse 60 and seeing if anything else doesn't work, but happy to look for correct circuit if given year.

 

Funnily enough I removed the alarm horn from my Polo just a couple of weekends back, pre-emptively rather than 'cos it was causing trouble. Had Lithium rechargeables inside rather than NiCds or similar.

 

 

 

 

I think all 2.0 MPI are 2001/2002 models which hung around for a long time in showrooms, mine is a 54 plate but it's a much earlier build year, there was only a short run of RHD cars before the factory stopped making them.

What's the tenth character of VIN?, that's the model year which gets us even closer. Will check some diagrams now.

There's another power feed to Central Convenience on fuse 49, so I suspect that fuse 60 removal won't cause anything other than alarm deadening.

Ok thanks, that's great, I'll try that tomorrow during daylight.

I think you'll find the alarm module, hidden behind the wheel arch liner iirc has a rechargeable nimh battery and can still scream independently of the main battery. The reason its going off randomly is the Nimh battery is failing or corrosion on the pcb. They can be replaced, can't remember where I saw detailed instructions, maybe youtube?

 

There is a possibility that its the internal movement sensors setting off the alarm, in which case you can deactivate the safe securing system. This is done by locking the vehicle with the key or radio-operated key twice within 2 seconds.

Edited 15 January, 20224 yr by xman

Thanks, but I don't recall ever seeing the button or the module you describe, the system uses the cars horn as the sounder so I think if it's disconnected it should stay off.

The alarm horn is under the car, just under the front left of where the rear bench 'rise' is. Under a steel cover with some awkwardish screws. 

If you lift the rear seat bases you can see where the wiring goes through to it 

Edit, we'll that's where I found it on my Polo.

 

Edited 15 January, 20224 yr by Wino

Mine's a 2005 VRS. Pulling fuse 60 stopped the alarm sounder. It started going off when neighbours left for work in the morning and drove slowly past it down the shared garage road.

Kind of frowned at the switch on the bonnet catch for a while, so cleaned that up.

 

Later I needed to get a new alarm/central locking fob working with the car. That needed fuse 60 back in. Plugged it in and it's been fine since. That was in 2011.