So my alarm has been going off constantly over the last few days. Found out from VCDS that it's logged as a fault with the back-up siren, so I'm guessing the battery has died (car is 6 years old).

 

I'd love to find a 2nd hand part, but not many sellers on eBay seem to mention age of vehicle it was removed from (not much point buying one that will go wrong in a month!)

 

Does anyone know what the part costs from Skoda/VW? Is there anything I can do in the short term to stop it going off constantly and annoying the whole street?

 

Thanks.

I have been lurking to buy one for a long time but like you say the batteries in the ones for sale on Ebay are probably foutu, I had saved a few of them in my wish list on AliExpress and looking recently at the similar items that came up I found one for €34 including delivery IIRC so its on its way as we speak, will post a link soon.

 

Here it is, €35 inc delivery

 

https://www.aliexpress.com/item/1SET-New-OEM-Car-Security-Alarm-Speaker-Horn-For-GOLF6-MK5-6-PASSAT-B6-TIGUAN-POLO/32947329784.html?spm=a2g0s.9042311.0.0.af4d4c4dX0E1rH

Edited 11 December, 20187 yr by J.R.

Anyone source a sensibly priced battery for these yet?

@FatblokeVRS

 

Perhaps this will help:

 

 

19 hours ago, J.R. said:

I have been lurking to buy one for a long time but like you say the batteries in the ones for sale on Ebay are probably foutu, I had saved a few of them in my wish list on AliExpress and looking recently at the similar items that came up I found one for €34 including delivery IIRC so its on its way as we speak, will post a link soon.

 

Here it is, €35 inc delivery

 

https://www.aliexpress.com/item/1SET-New-OEM-Car-Security-Alarm-Speaker-Horn-For-GOLF6-MK5-6-PASSAT-B6-TIGUAN-POLO/32947329784.html?spm=a2g0s.9042311.0.0.af4d4c4dX0E1rH

 

I noticed them a couple of days ago actually. What's the deal with the ripped-off-sticker? Are they OEM Bosch ones that went missing from the production line?! 

Hard to see what you mean from the photographs, I have the original one in my hand and think that these are simply copies, none of the raised moulded part numbers and symbols etc of the original are apparent on the Chinese ones although it does look like something has been erased under the oval sticker, the casing definitely has not come from the same mould tool as the Delta Electronics made in Italy original.

 

I will let you know when it arrives.

Assuming the backup battery is dead, should I be able to pull an internal fuse to stop it going off? But still maintain central locking 

I pulled a fuse (referring to the fuse box cover diagram) and it seems to have stopped going off randomly, at least.

https://www.cars-equipment.com/www/en/shop/skoda/oem-1k0951605c-alarm-system-siren-alarm/

 

This is a proper Bosch siren.

A timely posting because I recieved and fitted my decidely unBosch siren today, more later in the thread hijack.

 

That advert calling it Bosch does not convince me, in fact I am very very sceptical because it comes with the identical connector and lengths of bare wires terminated in connector pins and an uninsulated crimp open C earthing terminal that my cheap copy has, a Bosch replacement would not have those, they are intended for splicing it in to an alarm system on another vehicle or for testing, which I wish I had done now.

 

Now for the thread hijack, fitted the siren (should have bench tested it first) no chirps from remote, cleared fault codes and they came back immediately, 1134 Alarm horn H4 004 no signal/comm and 1135 internal monitoring sensors 004 no sinal/comm.

 

The latter was not there before but did come up on one scan but cleared and did not return till I fitted this alarm horn.

 

I have checked fuse 35 and its OK and the alarm led on the door and the illuminated symbol on the sensor disable switch are both working so I think there is power to the alarm, doing an output test on the alarm horn via VCDS it remains mute.

 

Where do I go from here? could it be the comfort control module? _ mega expensive, I will take the horn off and bench test it if anyone knows where to apply the signal, I guess the ring terminal is earth, one of the others is permanant 12v and the other 12v or perhaps ground to trigger the siren.

 

Other than having spent €35 on the siren I would rather the alarm not function than shell out for a new CCM but am concerned that other problems may follow, it was CCM and locking problems that saw my MK1 Octavia scrapped.

 

As an ex intruder alarm installer I think I would rather have a non functional alarm than one that might false alarm, the sensor non comms makes me wary, with a remapped exchange ECU the immobiliser has already been disabled but thats run from the main ECU so I assume that there is no connection between the immobiliser and alarm systems, is that correct or could that have some influence?

Might be worth dropping a note to the OP for the thread below, given that he had a unit stripped down.

 

https://www.briskoda.net/forums/topic/458298-alarm-siren-battery-replacement/