Hi - the alarm in our Skoda Octavia has started going off during the night (not during the day), every night and we can't get it to a garage until next week.  The outside temperature is very mild. 

 

Has anyone:-

 

(a) any suggestions what could be wrong; and

 

( any way of disabling alarm over weekend without running battery down so that we are not waking the neighbours and having disturbed sleep?

 

Many thanks

 

One very tired and weary owner

Tried turning off the interior sensor (on interior trim of driver door pillar) before locking up?

spiders/flies?

You might have a faulty alarm siren.

They technically should be changed at 6 years old if they don't fail before then as they have a rechargeable battery pack in them that tends to leak as they age.

Thanks folks :-)

A mate had an RS Turbo Escort which had a faulty alarm. It kept going off at random times during the night (and annoying the neighbours no end). On evening he decided he'd had enough hassle and left the alarm off. It got pinched that night.

Someone was going round regularly tripping the alarm, and once it was left turned off they pinched the car. Just same as you, it never happened in the day time, only at night.

spiders/flies?

or daddy longlegs

Owl is correct they do need new alarm heads every 6 years. Is the red led functionality correct on the drivers door?

If you've got remote locking, press the lock button twice in quick succession to disable the internal alarm after you get out of the car. 

If you've got remote locking, press the lock button twice in quick succession to disable the internal alarm after you get out of the car.

To disable the interior alarm sensor you're better off pressing the button on the b / door pillar next to the drivers seat. Pressing the lock button twice on the remote also disables the deadlocks which might not be what you want.

Further to the above post by Flapperjack7, when you lock your car (using a single click of the remote only), does the drivers door red LED keep flashing or flash initially and then stay constantly lit? If it stays constantly lit there is a fault somewhere in the system.

If you are able to get your car scanned with VCDS you can check the last 4 alarm activation causes by checking measuring block group 20 in the central convenience module. The triggers are shown as numbers and if you hover your mouse pointer over them, VCDS will display an explanation as to what they refer to. If it is the interior monitoring sensor that is triggering the alarm, you can adjust / reduce the sensitivity via the Adaptation function under Advanced Functions of the central convenience module (however see below for how to clean it before changing the sensitivity as it could just be dusty or a bad connection).

The above vcds check is what I did on my pre-fl mk2 and it revealed that in my case it was the alarm siren module that was at fault - the backup battery in the siren had leaked.

If you find it is a problem with your interior monitoring sensor you can try removing, cleaning and reinstalling the interior monitoring sensor as per post 8 by Mike Holroyd in this thread (might be worth trying this anyway if you don't have access to vcds):

http://www.briskoda.net/forums/topic/128706-anti-theft-alarm-systeminterior-monitor-error/

To disable the interior alarm sensor you're better off pressing the button on the b / door pillar next to the drivers seat. Pressing the lock button twice on the remote also disables the deadlocks which might not be what you want.

 

Ah, right.  Thanks for that 0wl.