Hi there,

I recently disconnected my superb battery for couple of hours to do some wire repair on the driver door hinge for the airbag sensor (typical problem with this model i recon). When i finished the repair, i put back everything together and re connected the battery to find out that the alarm siren stopped working. Now when i lock and unlock the car, the hazard lights flash as per the normal without the chirp sound. The small red LED light on the door keep on for i lock the car for a while before it starts blinking. Also scanned the car for codes and now i have code 01134 showing which is "Alarm horn - no signal / communication".

I thought initially that i must have damaged or disturbed another wire when i did the repair so i took the door panel off again and checked my work but nothing wrong i could find.

Could this be issue with the alarm siren battery died incidentally when i disconnevted the main battery. Reading online, it seems these modules comes with small build in rechargeable battery which are prone to fail in 10 years or so. My car is 2009.

If i am right, where do i find the alarm siren module, i checked everywhere in the engine bay but could not find it. Thanks in advance for your help.

Just ro add to this, i now noticed that the car horn also stopped working if the car if off. It only works when the ignition is on. I am 100% sure, it used to work when the ignition is off !!

Edited 9 September, 20259 Sep by Geoskoda

In my 2011 the alarm horn was under the cover at the base of the windscreen where the wiper blades mount

12 hours ago, a666andy said:

In my 2011 the alarm horn was under the cover at the base of the windscreen where the wiper blades mount

Thanks. I ll have a look and see, it should be the same i recon.

There is already a topic about the location of the alarm horn, and the (difficult) replacement of its battery: https://www.briskoda.net/forums/topic/458298-alarm-siren-battery-replacement/