Alarm siren/horn 01134 (H12) but battery and functioning OK

[stuartb3502]

I'm getting this code (it's a 2010 mk6 Golf GTD). I suspected the siren battery may be failing/failed based on others' experience. Removed and opened siren. No trace of any battery leakage or water ingress and the battery was reading over 6V.

I then tested by setting the alarm with the windows open and was able to trigger the siren by waving an arm inside.

Thought I should check for wiring damage, but not sure where the wiring runs once it disappears into the wing (tried looking in rain channel/under scuttle panel, but can't see).

Any ideas what may be going on or next steps to diagnose? Are any of the adv. measuring values of any use? I could see one for siren status (value "inactive") for example.

Autoscan below. Aware of air quality sensor (trying to get hold of a part at the moment). Line output/speaker monitoring errors due to aftermarket DSP/amps.

Mileage reported with alarm error is ~current mileage (I've cleared and the code comes back). I've also code the alarm as being "not installed" so that I could remove it and then coded it back to installed after refitting to test.

Friday,18,October,2024,11:20:36:37195
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 23.3.0.0 (x64)
Data version: 20230228 DS346.1
www.Ross-Tech.com


VIN: WVWZZZ1KZBW078726   License Plate: LC60-18-OCT
Mileage: 163680km-101706mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 1K-VW36 (7N0)
Scan: 01 03 08 09 15 16 17 19 25 2E 37 42 44 46 52 56 77

VIN: WVWZZZ1KZBW078726   Mileage: 163680km-101706miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
77-Telephone -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFGB)       Labels:. 03L-906-018-CFF.clb
   Part No SW: 03L 906 018 BB    HW: 03L 907 309 R
   Component: R4 2,0L EDC   H22 7818  
   Revision: 42H22---    Serial number: 00000000000000 CVN: 7F98B9C8
   Coding: 00190012040500080000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_ECM20TDI01103L906018BB 003005
   ROD: EV_ECM20TDI01103L906018BB_003_VW36.rod
   VCID: 6BDFDA668214BBCB06-803E
   VINID: 9E69EAAAA05BA929C01C81C2188A16A509

No fault code found.
Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 AT    HW: 1K0 907 379 AT
   Component: ESP MK60EC1   H30 0105  
   Revision: 00H30001    
   Coding: 163B600D09290002681206E6901F0082310800
   Shop #: WSC 01357 011 00200
   VCID: 040D91DA878A54B3E7-8050

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
   Part No SW: 5K0 907 044 BS    HW: 5K0 907 044 BS
   Component: Climatronic   H15 0709  
   Revision: 00003001    
   Coding: 0000000002
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_Climatronic A01006
   ROD: EV_ClimaAutoBasis_VW36.rod
   VCID: 7DFBE43EEC60257BA8-8028

1 Fault Found:
9479189 - Signal Line for Air Quality Sensor 
          B10A4 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 6
                    Reset counter: 111
                    Mileage: 163680 km
                    Date: 2024.10.17
                    Time: 13:07:51


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
   Part No SW: 1K0 937 086 H    HW: 1K0 937 086 H
   Component: BCM PQ35  M   103 0615  
   Revision: 00103 AD    
   Coding: 48180A388025F10040080080250081EC46710000533D8160648000200040
   Shop #: WSC 01357 011 00200
   VCID: 356B3C1E9CD03D3B20-8060

   Subsystem 1 - Part No: 1K2 955 119 F  Labels: 1KX-955-119.CLB
   Component: Wischer 20081  26  0512 
   Coding: 009795

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS 220810 05  54  0403 
   Coding: 0330AD

   Subsystem 3 - Part No: 1K8 951 171 
   Component: DWA-Sensor 00  001 0104 

   Subsystem 4 - Part No: 1K8 951 605 A
   Component: LIN BACKUP HO  H11 9004 

1 Fault Found:
01134 - Alarm Horn (H12) 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 111
                    Mileage: 163680 km
                    Time Indication: 0
                    Date: 2024.10.18
                    Time: 11:15:12

             Freeze Frame:
                        Term 15 On
                    Voltage: 11.85 V
                        ON
                        ON
                        Term 50 Off
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5K0 959 655 D    HW: 5K0 959 655 D
   Component: AirbagVW10    037 0606  
   Serial number: 003FKRABTE33   Dataset Number: 5K0003v____ 0085
   Coding: 00003133
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_AirbaVW10SMEVW360 A01011
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 3B7F2A26B2F4EB4BD6-806E

   Crash sensor for side airbag: driver side: 
   Subsystem 1 - Part No SW: 5K0 959 354     HW: 5K0 959 354 
   Component: S.Sens.Fahr.V  H01 ---- 
   Serial number: 3572MSME08664255ZZZT

   Front Passenger's Side Airbag Crash Sensor: 
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354 
   Component: S.Sens.Beif.V  H01 ---- 
   Serial number: 3582MSME763A4255ZZZ-

   Rear Side Airbag Crash Sensor (on driver's side): 
   Component: S.Sens.Fahr.H  --- ---- 
   Serial number: 3512QSME06386D64ZZZ.

   Passenger side rear thorax airbag crash sensor: 
   Component: S.Sens.Beif.H  --- ---- 
   Serial number: 3522QSME36306A14ZZZP

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
   Part No SW: 5K0 953 507 BB    HW: 5K0 953 549 D
   Component: Lenks.Modul   007 0080  
   Revision: --------    Serial number:  90440JHG0012S Dataset Number: 5K0953507BB D005
   Coding: 1082000000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_SMLSNGKUDS A05001
   ROD: EV_SMLSNGKUDS_A05.rod
   VCID: 71E3C80EA038511B3C-8024

   Multifunction steering wheel control module: 
   Subsystem 1 - Part No SW: 5K0 959 542     HW: 5K0 959 542   Labels: 3C8-959-537.CLB
   Component: E221__MFL-TAS  H05 0010 
   Serial number: 0010252             
   Coding: 820000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 5K6 920 971 A    HW: 5K6 920 971 A
   Component: KOMBI         H04 0406  
   Serial number: 00000000000000
   Coding: 170B00
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04089
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 336F02069AA4230B0E-8066

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 7N0-907-530-V1.clb
   Part No SW: 7N0 907 530     HW: 1K0 907 951 
   Component: J533  Gateway   H27 5603  
   Revision:   H27       Serial number: 100810F2001801
   Coding: E9801F0640061200000001
   Shop #: WSC 01357 011 00200
   VCID: 6DDBD47E7400B5FB18-8038

1 Fault Found:
00463 - Control Module for Digital Sound Package (J525) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01110100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 111
                    Mileage: 163665 km
                    Time Indication: 0
                    Date: 2024.10.07
                    Time: 16:53:32


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H04 0406  
   Serial number: 00000000000000
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
   VCID: 6AD1DF628DEEA2C37D-803E

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (J650)       Labels:. 5N0-035-342.lbl
   Part No SW: 5N0 035 342 C    HW: 5N0 035 342 C
   Component: SG EXT.PLAYER H13 0111  
   Revision: A1001003    Serial number: 7668518320    
   Coding: 010000
   Shop #: WSC 01357 011 00200
   VCID: 2757E656567C5FABA2-8072

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 1T0 035 680 P    HW: 1T0 035 680 C
   Component: RNS-MID       H55 5269  
   Revision: AB001001    Serial number: VWZ6Z7K6165042
   Coding: 04010002010000A10000
   Shop #: WSC 05314 123 12345
   VCID: 3B7F2A26BAF4EB4BD6-806E

   Subsystem 1 - Part No: 1T0 051 859 AS
   Component: EU West V17  8557 

2 Faults Found:
00859 - Line-Output; Front Right 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 7
                    Reset counter: 111
                    Mileage: 163680 km
                    Time Indication: 0

00823 - Line-Output; Front Left 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 7
                    Reset counter: 111
                    Mileage: 163680 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 5K0 959 701 D    HW: 5K0 959 701 D
   Component: Tuer-SG         009 2150  
   Coding: 0000628
   Shop #: WSC 01357 011 00200
   VCID: 336F020652A4230B0E-8066

2 Faults Found:
00120 - Outside Warning Light/Door exit Light Driver Side 
            012 - Electrical Fault in Circuit - Intermittent
01030 - Central Locking Key Switch; Driver Side; Lock 
            008 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 J
   Component: EPS_ZFLS Kl. 69     3001  
   Revision: 00H17000    
   Shop #: WSC 01357 011 00200
   VCID: 3163080EA8B8111B7C-8064

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 5K0 959 702 B    HW: 5K0 959 702 B
   Component: Tuer-SG         009 2118  
   Coding: 0000628
   Shop #: WSC 01357 011 00200
   VCID: 32610702ADBE2A0305-8066

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J0506)       Labels:. 1T0-035-680.clb
   Part No SW: 1T0 035 680 P    HW: 1T0 035 680 C
   Component: RNS-MID       H55 5269  
   Revision: AB001001    Serial number: VWZ6Z7K6165042
   Coding: 04010002010000A10000
   Shop #: WSC 05314 123 12345
   VCID: 3B7F2A26BAF4EB4BD6-806E

   Subsystem 1 - Part No: 1T0 051 859 AS
   Component: EU West V17  8557 

2 Faults Found:
00859 - Line-Output; Front Right 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 7
                    Reset counter: 111
                    Mileage: 163680 km
                    Time Indication: 0

00823 - Line-Output; Front Left 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 7
                    Reset counter: 111
                    Mileage: 163680 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 77: Telephone (J412)       Labels:| 3C8-035-730-A.clb
   Part No SW: 3C8 035 730 B    HW: 3C8 035 730 B
   Component: Telefon       011 0723  
   Revision: --------    Serial number: 35909603262939
   Coding: 020000010100010000000400
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_UHVPremi A02003
   ROD: EV_UHVPremi_A02.rod
   VCID: 2241F742355EBA83F5-8076

No fault code found.

End-------------------------(Elapsed Time: 02:43)--------------------------

 

[Crasher]

Standard problem, new siren, multiple revised part number and brand 1K0 951 605 F £232.20

 

[stuartb3502]

Thanks. Do you think the code indicates a failing siren then? It is functioning correctly.

Whenever I've seen it talked about, it's the battery that reaches end of life and then leaks on to the PCB destroying it. That hasn't happened here. Is it possible for the module to store an incorrect code state after an intermittent fault?

Don't want to throw on a new siren at that kind of money if cause is something else and solely due to a code, but would like to get the issue clean as I like to maintain the car to a high standard.

 

[PetrolDave]

the battery was reading over 6V.

Is that a reasonable voltage for the battery? What's its nominal voltage?

 

[stuartb3502]

Is that a reasonable voltage for the battery? What's its nominal voltage?

Good question. The battery is marked as 6V (apparently these are 5 x 1.2V Varta cells) and it's reading 6.8V. As far as I can determine, a higher voltage on a fully charged battery is OK, but also does not really tell me if the battery is healthy because I'm not testing it under load. I think my options are:

1 Live with a code until the alarm displays symptoms (at least I know how to get it off now - drilling the rivets is the worst part of the job)
2 Try sticking on a new battery (£25-30)
3 Buy an alarm (£150-230)

Think I'll go with option 2 and then back to 1 if there's still a code. Unless anyone has any other brainwaves :-)

 

[stuartb3502]

Also just found Measuring Block 126. This reports battery status as Defect, but voltage as OK. So possibly some additional weight to it being a failing battery. Will swap and see. Thanks Crasher and PetrolDave.

 

[Crasher]

The genuine replacements sometimes don’t last two years so keep the invoice safe. We fitted one to a Golf 5 and it went faulty after 18 months. The procedure is to take the car to a VW dealer but they ignored the above code and insisted it was the ignition switch which is often stored as a code with the PQ35 platform. The lady paid for us to do the switch and still the siren would go off in the night but tellingly without flashing the indicators. We returned it to VW and they changed the siren which stopped the problem… for now. Personally I code the bloody things out, car alarms are a dammed nuisance unless you can hear it, a phone text makes more sense but there doesn’t appear to be an aftermarket system.

 

[PetrolDave]

car alarms are a dammed nuisance unless you can hear it

I agree, back in 2006 some scrote smashed the nearside passenger window of my A4 and even though the car was parked less than a foot from our hall window the alarm was so quiet it sounded like it was down the street and not on our drive!

 

[stuartb3502]

I agree on alarm usefulness.

FWIW, swapped battery. No different. Everything works, no phantom alarms, but still a code. Must be a component on the alarm that is confusing the car.

 

[Crasher]

The car battery or siren battery?

 

[matheria]

I agree on alarm usefulness.

FWIW, swapped battery. No different. Everything works, no phantom alarms, but still a code. Must be a component on the alarm that is confusing the car.

I have absolutely the same situation. Alarm is working. Change the batterie. Still have an error 000 - no details

https://imgur.com/a/X2YygxD

 

[stuartb3502]

The car battery or siren battery?

I changed the siren battery.

I have today tried a used 1K0951605C taken from a 2014 car. Fault cleared and measuring block 126 reporting siren battery status and voltage as both OK.

Also tested siren as actually working and (by accident when I forgot to code it out before removal) tested that the siren works off it’s backup battery. No idea how long it will last compared to a new one, but at least I know how to change battery and the siren if needed again.

 

[Crasher]

 

[stuartb3502]

Not sure what the sarcastic rolleyes is for.....never mind. Only trying to complete the thread rather than it petering out with no answers as so many do.

 

[Dr Sheldon]

Think I'll go with option 2 and then back to 1 if there's still a code. Unless anyone has any other brainwaves :-)

That control unit will be looking at more than just Voltage at that siren battery - it may load it from time to time, it may be looking at internal resistance - I dont know !!
What I do know is that it does look at more than just Voltage - Also this is not a VAG thing - Loads of cars have the same siren issue. Volvo MB just to name a few !!

An example is the W212 E Class that has an Auxiliary 12v battery - That will show a fault in the Driver Display. I have tested a few of those batteries and they hold charge well however it measures internal resistance and fails the battery -

There is an MVB for that resistance in that module. so a change can be seen - I reckon the same is going on here.

 

[Crasher]

Not sure what the sarcastic rolleyes is for.....never mind. Only trying to complete the thread rather than it petering out with no answers as so many do.

Changing the battery, not the siren, it is a board fault.

 

[stuartb3502]

That control unit will be looking at more than just Voltage at that siren battery - it may load it from time to time, it may be looking at internal resistance - I dont know !!
What I do know is that it does look at more than just Voltage - Also this is not a VAG thing - Loads of cars have the same siren issue. Volvo MB just to name a few !!

An example is the W212 E Class that has an Auxiliary 12v battery - That will show a fault in the Driver Display. I have tested a few of those batteries and they hold charge well however it measures internal resistance and fails the battery -

There is an MVB for that resistance in that module. so a change can be seen - I reckon the same is going on here.

Possibly, possibly not. I did however get the same error even with a new battery installed. It's possible I suppose that a freshly installed battery might not have been tested yet in the way that you suggest. Perhaps it needs to go through a charging cycle (I did not run the engine).

Or it's possible as Crasher says that this was a board fault. Either way it makes diagnosis and rectification other than by replacing the siren tricky.

Changing the battery, not the siren, it is a board fault.

Well, yes, I think you're right now. But no way to see that I'd suggest. Received wisdom is that the batteries do fail (and I have replaced one on another car successfully - in that case the sirens were no longer available). Measuring block also indicated a battery fault. Hopefully this thread will be useful to someone anyway.

 

[Crasher]

It is in the service schedule to change the siren every five years.