My car alarm comes on randomly and I would like to disable the alarm.

you cant.!
the operators guide tells you how to disable the door alarms
but not how to bypass the IMMOBILIZER
that be by DESIGN.
not possible.
(car has security keys, right>? for the IMMO.,! cluster lamp)
if it was easy, all cars would be easy to steal now.
and are NOT.
a 21s century deal. here.
and in usa , the fed. LAW. (and stricter every year !)

what to do is scan PCM to find out what is failing!
or get car serviced
you have 2 choices
get it serviced
or buy the FSM book read the pages on alarm, scan it and do the tests stated in the book, i bet you wont read the book.

just 4 bucks to read it

https://suzukipitstopplus.com/Products/10057-2003-grand-vitaragrand-vitara-xl-7-service-manual.aspx


RTM
then ask questions.
we can answer.
but yes, a great dream it was...... sorry.

Easiest way to go about it is disconnect the wire to the noise maker. U could disconnect the wire to the alarm board itself but you do not know if there are some other circuits tied into it that will be disabled when you do the disconnect. But if you do it my way there is no hassle.

Of course, when the alarm goes off you will hear nada. My only concern is that when the alarm goes off if it kills other circuits that make the car go.

If you can get a hold of a schematic you can tell what the story is and what to do.

Disconnect back up battery and main battery.,

The alarm tripping is often caused by a bad door or hood switch. Since the hood switch is always exposed to water and corrosion, that one usually goes bad first. Check that out. And no, you can't disable it.

You are not able to disarm the factory alarm on this vehicle. You will need to have it diagnosed. But the issues sounds to me like the key fob is bad and needs to be replaced

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_677dced97ad9bddf

Factory system or added on?

yes in the box of control see the diagram attached, there are small switch, that you adjust the sensitivy. and clean it with contacts cleaner.
God bless you

it may be possible to get another key from your volkswagen dealer or else you may have to take the vehicle to an auto electrician to have it disarmed....hope this helps......cheers.

can you check under hood, there is a fuse box, remove fuse box lid, inside is printed names of circuits if you have an alarm circuit , remove that fuse, then check if car starts and runs, if so, alarm is disabled.

You should be able to unplug the control unit under the drivers seat to disable the alarm.