How to code out reverse warning light, or all bulb warnings, on a 2015 VW Caddy

   #1  

endacy

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Hi all, so I’ve just installed some facelift rear lights on a 2015 Caddy for a friend, we re pinned the connectors fine and they all work but facelift lights only have one reverse bulb so the warning is displayed on the dash, warning of right hand reverse light failure. I can’t find any options in the instruments or central electrics to disable the reverse bulb warning or instead just disable the warning altogether (not ideal anyway but second best). I think it’s going to be in Byte 18 of module 09 but that has no info and a big warning suggesting you don’t play with it. So can anyone tell me the required code for this? Ive found some suggestions for a golf but don’t want to guess due to the warning of module damage. Here is an autoscan of the vehicle and thanks in advance:

Code:
Saturday,13,February,2021,12:05:39:64533
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
VCDS Version: 20.12.0.1
Data version: 20201125 DS322.1
www.Ross-Tech.com


VIN: WV1ZZZ2KZFX090487   License Plate: GN65YSL
Mileage: 100520km-62460mi   Repair Order: 



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


Chassis Type: 2K-VN35 (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 42 44 46 52 56 77

VIN: WV1ZZZ2KZFX090487   Mileage: 100520km-62460miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
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: Cannot be reached 1100
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAYD)       Labels:. 03L-906-023-CAY.clb
   Part No SW: 03L 906 023 TF    HW: 03L 907 425 C
   Component: R4 1.6l TDI   H43 9979  
   Revision: --H43---    Serial number: 00000000000000
   Coding: 00114014032500080000
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_ECM16TDI02103L906023TF 003003
   ROD: EV_ECM16TDI02103L997557L.rod
   VCID: 7DF11E06EC0D7B6C69-8028

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 BS    HW: 1K0 907 379 BS
   Component: ESP MK60EC1   H46 0166  
   Revision: 00H46001    
   Coding: 433C400D092B03FAC20F02EC9020C081A0000020
   Shop #: WSC 35110 377 08192
   VCID: 04076BE287E70AA426-8050

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 3C8-907-336.clb
   Part No SW: 7N0 907 426 CM    HW: 7N0 907 426 CM
   Component: AC Manuell    H20 0707  
   Revision: 00001002    
   Coding: 0010004002
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_ACManueBHBVW36X A01010
   ROD: EV_ACManueBHBVW36X_VW32.rod
   VCID: 010962F690F51F8C0D-8054

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
   Part No SW: 5K0 937 086 S    HW: 5K0 937 086 S
   Component: BCM PQ35 M+   122 0174  
   Revision: BD122001    
   Coding: 491A583E8025F16A088800829000016403017288524F8160648000000040
   Shop #: WSC 35110 377 08192
   VCID: 4487ABE2C767CAA466-8010

   Subsystem 1 - Part No: 1T2 955 119 A  Labels: 1KX-955-119.CLB
   Component: Wischer 04121  26  0512 
   Coding: 009795

   Subsystem 2 - Part No: 7N0 951 171 A
   Component: DWA-Sensor 00  002 0206 
   Coding: 000000

   Subsystem 3 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 
   Coding: 000000

1 Fault Found:
01519 - Bulb for Back-Up Lights; Right (M17) 
            010 - Open or Short to Plus
             Freeze Frame:
                    Fault Status: 01101010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 18
                    Mileage: 100529 km
                    Time Indication: 0
                    Date: 2015.07.07
                    Time: 11:58:47

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


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 1Q0-919-475.clb
   Part No SW: 2K0 919 475     HW: 1Q0 919 475 
   Component: PARKHILFE 4K  H03 0004  
   Revision: --------    Serial number: 32931434703240
   Coding: 108001
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_EPHVA14VN3370000 001006
   ROD: EV_EPHVA14VN3370000.rod
   VCID: 70EF3732AB5F0604F2-8024

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 B    HW: 7E0 959 655 B
   Component: VW10Airbag02Q H07 0013  
   Revision: --------    Serial number: 003HL00UJSK9
   Coding: 000000000000000000000000000000003251
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVN750 A01026
   ROD: EV_AirbaVW10BPAVN750.rod
   VCID: 3561C62694BD632CE1-8060

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
   Part No SW: 5K0 953 521 DN    HW: 5K0 953 569 AF
   Component: LENKS.MODUL   016 0162  
   Revision: FF010042    Serial number: 20141217301369
   Coding: 5080160000
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_SMLSNGVOLWSXS A01004
   ROD: EV_SMLSNGVOLWS.rod
   VCID: 7BF5101EF219755C57-802E

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 2K0 920 976 E    HW: 2K0 920 976 E
   Component: KOMBI         H04 0905  
   Serial number: 00000000000000
   Coding: 480800
   Shop #: WSC 35110 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04727
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW36.rod
   VCID: 3365F83E9AC97D1CCF-8066

1 Fault Found:
13654544 - Databus 
          U1121 00 [009] - Missing Message
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 254
                    Reset counter: 18
                    Mileage: 98363 km
                    Date: 2020.12.15
                    Time: 12:28:20


-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
   Part No SW: 7N0 907 530 AP    HW: 7N0 907 530 AK
   Component: J533  Gateway H57 1653  
   Revision:   H57       Serial number: 191214F1000200
   Coding: 357401
   Shop #: WSC 35110 377 08192
   VCID: 7EF3190AE90B607470-802A

1 Fault Found:
01303 - Telephone Transceiver (R36) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 171
                    Mileage: 98363 km
                    Time Indication: 0
                    Date: 2015.05.08
                    Time: 12:28:27


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H04 0905  
   Serial number: 00000000000000
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW23.rod
   VCID: 6ADB255A8D83FCD4BC-803E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1T0 959 701 T    HW: 1T0 959 701 T
   Component: Tuer-SG         009 2110  
   Coding: 0000560
   Shop #: WSC 35110 377 08192
   VCID: 489FBFD23B4FEEC48A-801C

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 R
   Component: EPS_ZFLS Kl. 140    3501  
   Revision: 00H22000    
   Shop #: WSC 35110 377 08192
   VCID: 3979CA1670A5874C05-806C

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1T0 959 702 R    HW: 1T0 959 702 R
   Component: Tuer-SG         009 2110  
   Coding: 0000560
   Shop #: WSC 35110 377 08192
   VCID: 479DBCEE3651E1BC83-8012

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 1K0 035 186 AN    HW: 1K0 035 186 AN
   Component: RCD310 EU     H06 5007  
   Revision: -----10S    Serial number: VWZ4Z2P1458970
   Coding: 05000200010013
   Shop #: WSC 35110 377 08192
   VCID: 72EB3D3AAD53341404-8026

1 Fault Found:
01303 - Telephone Transceiver (R36) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 6
                    Fault Frequency: 254
                    Reset counter: 18
                    Mileage: 98363 km
                    Time Indication: 0
                    Date: 2015.05.08
                    Time: 12:28:27


-------------------------------------------------------------------------------
Address 77: Telephone
Cannot be reached

End-------------------------(Elapsed Time: 02:23)--------------------------
 
   #2  

Caddy64

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Hi Endacy. The answer you are looking for is that VCDS cannot do this. You need access to Vag Can Pro. I know this because I have a 2014 Caddy as well and I had to purchase VCP around £230 to code out the warning lights and code in the bottom light bar. Hope this helps of sorts.
 
   #3  

Cuzoe

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I don't have a Caddy, so @Caddy64 should be trusted before me here but... Make sure you have an adaptation map backup first, as a possible fix will be in adaptations, not long coding...

Then try changing the Lasttyp to "Not Active" for the Leuchte channel that is wired to the light you don't have. The BCM should then no longer "look for" a light there, and subsequently not report a fault.

This is a snip of my post from another forum... but it worked to get rid of soft errors I was having for parking light bulbs, which my aftermarket headlights do not have. The last part of the Leuchte channel name corresponded to a BCM plug and pin.

Left Front Parking Light - Leuchte2SL VLB10 - Load Type 2 (on my car this is Lasttyp 2, just a typo in the pic I think)
Right Front Parking Light - Leuchte3SL VRB21 - Lasttyp 3

The "B10" for the left and the "B21" for the right correspond to pins on the BCM (J519), confirmed with the J519 pinout chart. Right now both these channels are set to "Type 10 - allgemeine Scheinwerfer" which translates to general headlights, according to Google translate anyway. If I'm remembering the choices for this adaptation correctly I should be able to set it to "not active." There is a "Fehlerort mittleres" adaptation channel associated with B10 and B21, which translates to "fault location medium." This channel's value is currently "45" but I'm not sure what that means. I would think the value in this channel won't matter if the type is set to "not active" though.

I'm thinking setting the type to "not active" for the two Lasttyp channels should mean the BCM no longer looks for them. And if that's the case, I should no longer get the soft codes for those lights. Thoughts anyone?
 
   #4  

DV52

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@Cuzoe : hmm........ OP's BCM is PQ35 - won't have MQB type adaptation channels?
 
   #5  

Cuzoe

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Haha... what's that mean, lol. I thought about that about halfway through the post then decided I had typed too much to turn back.
 
   #6  

m87a

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use vcp there is eeprom modification just for this...
 
   #8  

DV52

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Haha... what's that mean, lol.
@Cuzoe: It means (as Uwe said) that PQ35 modules pre-date the (UDS/ODX) protocols that are used on vehicles that have Leuchte channels (i.e cars that were first built with a MQB platform).

Specifically for OP's matter, it means that the adaptation channel database in the PQ35 module is managed differently; the database is contained in a list of channel numbers - rather than the channels having descriptive names (like "Leuchte").

What it doesn't mean is that because it may be possible to code-out reversing lights using Leuchte-programming on the newer modules, it can also be done on a PQ35 module -in fact, quite the opposite according to @m87a (who is far more knowledgeable about these things)

Don
 
Last edited:
   #9  

Uwe

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it can also be done on a PQ35 module
It can, but it requires modifying EEPROM contents directly, and VCDS doesn't do that.

-Uwe-
 
   #10  

vastechnics

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Bridge the 2 backup lights with eachother. Problem also solved
 
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