LED DRL's MY12 Octavia - bulb check?

[langers2k]

I suspect this might be a byte 18 mystery.

I want to replace the DRLs on a MY12 Octavia Elegance with LEDs but this will cause a blown bulb warning on the dash. As the VRS model came with LED DRLs I hope it's as simple as copying the coding over, assuming Skoda wire the DRLs in both cars identically...

Any suggestions on both the original byte 18 and a VRS byte 18 would be? Non-xenon in both cases.

Thanks!

Tuesday,07,October,2014,17:19:34:12963
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 12.12.3.0 (x64)
Data version: 20140905

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

Chassis Type: 1Z (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 37 42 44 46 52 56 62 72

VIN: TMBBE21Z1C2------

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: OK 0000
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
37-Navigation -- 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: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFHC)       Labels: 03L-906-018-CFF.clb
   Part No SW: 03L 906 018 C    HW: 03L 906 018 BR
   Component: R4 2,0L EDC   H24 7100  
   Revision: 42H24---    Serial number:               
   Coding: 00190012042500080000
   Shop #: WSC 73430 031 00097
   ASAM Dataset: EV_ECM20TDI01103L906018C 003005
   ROD: EV_ECM20TDI01103L906018C.rod
   VCID: 2A5B233B4DCD8A4EE59-807F

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

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1K0-907-379-MK70M.clb
   Part No SW: 1K0 907 379 AK    HW: 1K0 907 379 AK
   Component: MK70 M MASR         0106  
   Revision: 00H35001    
   Coding: 0001281
   Shop #: WSC 73430 790 00097
   VCID: 7BF5D67F3AD7C3C6CEF-802E

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: 5K0-907-044.clb
   Part No SW: 3T0 907 044 BL    HW: 3T0 907 044 BL
   Component: Climatronic   H18 0506  
   Revision: 00001007    
   Coding: 0000000002
   Shop #: WSC 73430 790 00097
   ASAM Dataset: EV_Climatronic A01010
   ROD: EV_ClimaAutoBasis_SE36.rod
   VCID: 7DF1D867ECC3CDF6F0B-8028

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels: 1K0-937-08x-09.clb
   Part No SW: 1K0 937 087 Q    HW: 1K0 937 087 Q
   Component: BCM PQ35  H   110 0651  
   Revision: 00110 AC    
   Coding: 48000AB8E05BB1C040080080110001E4437000AE726D85605C8440000040
   Shop #: WSC 26007 576 125000
   VCID: 3F8D626FAE4F1FE6A27-806A

   Subsystem 1 - Part No: 1Z2 955 119 D  Labels: 1KX-955-119.CLB
   Component: Wischer 29071  26  0601 
   Coding: 00D7B7

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS 120811 05  54  0403 
   Coding: 0730ED

   Subsystem 3 - Part No: 1Z0 951 171 
   Component: Innenraumuebe  008 5101 

   Subsystem 4 - Part No: 1K8 951 605 B
   Component: LIN BACKUP HO  H11 9005 

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels: 5J0-919-475.clb
   Part No SW: 5J0 919 475 A    HW: 5J0 919 475 A
   Component: PARKHILFE 4K  H11 0005  
   Revision: --H11---    Serial number: 32901122400152
   Coding: 10800E
   Shop #: WSC 13765 790 00097
   ASAM Dataset: EV_EPHVA14SKxxx0000 001001
   ROD: EV_EPHVA14SKxxx0000.rod
   VCID: 33653E5F9A07CB8656F-8066

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 1K0-909-605.lbl
   Part No SW: 1K0 909 605 T    HW: 1K0 909 605 T
   Component: Q4 AIRBAG VW8   020 2300  
   Revision: 05020000    Serial number: 0038PC26XCCR  
   Coding: 0020788
   Shop #: WSC 73430 790 00097
   VCID: 3D71186764430DF6B0B-8068

   Subsystem 1 - Serial number: 6332MSME63154E54D

   Subsystem 2 - Serial number: 6342MSME624625344

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels: 5K0-953-569.clb
   Part No SW: 5K0 953 521 BN    HW: 5K0 953 569 E
   Component: LENKS.MODUL   014 0140  
   Revision: FF010040    Serial number: 20110808201317
   Coding: 1082140000
   Shop #: WSC 73430 790 00097
   ASAM Dataset: EV_SMLSNGVOLWSXS A01004
   ROD: EV_SMLSNGVOLWS.rod
   VCID: 79F9CC77F8EBF1D6DC3-802C

   Multi Function Steering Wheel Control Module: 
   Subsystem 1 - Part No SW: 3T0 959 537     HW: 3T0 959 537   Labels: 3C8-959-537.CLB
   Component: E221__MFL-URO  H07 0012 
   Coding: 800000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels: 5K0-920-xxx-17.clb
   Part No SW: 1Z0 920 943 S    HW: 1Z0 920 943 S
   Component: KOMBI         H05 0607  
   Serial number: 00000000000000
   Coding: 410E01
   Shop #: WSC 73430 031 00097
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04114
   ROD: EV_Kombi_UDS_VDD_RM09_SE35.rod
   VCID: 49997CB7E88BA1560C3-801C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels: 7N0-907-530-V2.clb
   Part No SW: 7N0 907 530 H    HW: 1K0 907 951 
   Component: J533  Gateway H42 1620  
   Revision:   H42       Serial number: 310711F1001106
   Coding: 351303
   Shop #: WSC 73430 790 00097
   VCID: 356100479C73D5B678B-8060

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels: 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H05 0607  
   Serial number: 00000000000000
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03009
   ROD: EV_Immo_UDS_VDD_RM09_SE36.rod
   VCID: EADB633B0D4DCA4EA59-80BF

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation (J794)       Labels: 3C0-035-270.clb
   Part No SW: 3T0 035 191 A    HW: 3T0 035 191 
   Component: RNS310        H19 0353  
   Revision: 11000000    Serial number: SKZ1Z2L0693486
   Coding: 000004010401000000000000
   Shop #: WSC 73430 031 00097
   ASAM Dataset: SK_RNS310 A02007
   ROD: EV_SKRNS310UDS.rod
   VCID: 2B55263F423793461EF-807E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 1K0-959-701-MAX3.lbl
   Part No SW: 1T0 959 701 AA    HW: 1T0 959 701 AA
   Component: Tuer-SG         009 2120  
   Coding: 0000758
   Shop #: WSC 73430 790 00097
   VCID: 76E3C74B01F59EAEB11-8023

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1Kx-909-14x-44.clb
   Part No: 1K0 909 144 M
   Component: EPS_ZFLS Kl. 69     3201  
   Revision: 00H20000    
   Shop #: WSC 73430 790 00097
   VCID: 34673D435709CCBE4F5-8061

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MAX3.lbl
   Part No SW: 1T0 959 702 S    HW: 1T0 959 702 S
   Component: Tuer-SG         009 2120  
   Coding: 0000758
   Shop #: WSC 73430 790 00097
   VCID: 489F79B33B81585E13D-801D

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels: 1K0-959-703-GEN3.lbl
   Part No SW: 5K0 959 703 A    HW: 5K0 959 703 A
   Component: Tuer-SG         007 2101  
   Coding: 0000144
   Shop #: WSC 73430 790 1012545
   VCID: 326B3B5BAD1DC28E5D9-8067

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels: 1K0-959-704-GEN3.lbl
   Part No SW: 5K0 959 704 A    HW: 5K0 959 704 A
   Component: Tuer-SG         007 2101  
   Coding: 0000144
   Shop #: WSC 73430 790 1012545
   VCID: 33653E5F5207CB8656F-8066

No fault code found.

End   ---------------------------------------------------------------------

 

[langers2k]

Anyone got any ideas? I've only found one post about byte 18 coding on a similar octavia here: http://forums.ross-tech.com/showthr...CM-(1k0-937-087-J)&p=3388&viewfull=1#post3388

Dana states the following codes:
34,Lighting: Skoda Octavia (1Z/SK35) Rest of World / Left Hand Drive / separate DRLs
36,Lighting: Skoda Octavia (1Z/SK35) Rest of World / Left Hand Drive / Scandinavian DRLs
38,Lighting: Skoda Octavia (1Z/SK35) Rest of World / Left Hand Drive / Xenon-Shutter DRLs

Do we also know what they are for RHD vehicles and the VRS versions?

 

[langers2k]

Anybody got any ideas? I've tried to PM Dana unsuccessfully (full inbox) so is it possible another ross-tech employee can point this in their direction?

Thanks,

 

[Spacewalker]

As long as your BCM support LED light, is easy
Hovewer there is a solutuion now to "code" any BCM to support LED light .
Also you can custom adjust light OUTPUT in BCM , so no need any more swap wires for extra light
Unfortunatelly not via VCDS

 

[langers2k]

Excellent, so do you happen to know if the 1K0 937 087 Q does support LEDs?

I assume I would need access to VAS to change these settings, are you able to provide any extra information as I'm sure I could find a friendly dealer once I know what I need to change.

 

[Spacewalker]

087Q not support LED but can be "adjust" to.
VAS will do almost this same as VCDS, but both unit are not strong enaught this time.

 

[golfi_vend]

Internal software has to be modified right?

 

[langers2k]

So if I did want to try modifying the BCM without using VCDS/VAS, what would I need? Are you able to provide more information or should we take this to PM as it's not really a VCDS question anymore.

Thanks!

 

[Enriquez]

You have 2 options:

1. Prepare for the visit in the dealership - to restore Your DRL's working again. If Your vehicle is LHD, change the byte 18 bvalue to $33 or $5B. If this will not help You, come back to 35 or 39. If Your's DRL's will not work at all, You need in this case to go to the dealer, to restore the genuine light setup. They know how to do it. They should know... You can purchase the error cancellers e.g. from this shop: http://sklep.motohid.pl/pl/p/Adapter-Kasownik-do-LED-DRL-Octavia-2-FL,-Superb,-Passat/339

2. Find somebody with VAS 5054a head and ODIS Engineering software. It could be VAG CAN Pro software as well. In the CECM module first login to the access and authorization by using 42013 login. Then go to the CECM memory cells and change the value of the following memory cells: 3109, 3110, 3111 from default values $02, $01, $30 to the modified $02, $81, $70 ($ = HEX).

 

[Xpower]

The wiring for vRS and non vRS is totally different, The LED's on a vRS have 3 wires and you have 2 to your bulb. vRS also doesn't have the seperate wiring for the side light in the headlight (it's not in the harness from the BCM to the headlight)

Pins are:

Earth
Current controlled power supply
On / dimming signal to transistor in DRL module

 

[Enriquez]

That's correct, but we are talking not about retrofit vrs leds, but just replace existing bulb by led one.

 

[quattrodave]

Eagerly watching this thread as I desperately want to fit LED DRL's to mine...

Instead of disabling bulb checking on the DRL circuit would it not be possible to get the BCM to re-learn the resistance values?

Edit: The reason I ask is I see it as unlikely the resistance would be hard-coded as it will only accept a rather small resistance window as 'OK'. So if its not hard-coded then it has to be either a single value or between x value and y value. Essentially all we have to do is find these values and, for want of a better expression, move the goal posts. I must admit this is easier said than done... I know I'm new to VCDS but if it works like I think it works the I'd be surprised if it can't be done via VCDS, I do wonder if we just don't know what all the bits actually do...

 

[Uwe]

It's probably not "hard coded", but "parameterized". The dealer's tools that we use as a reference for developing VCDS do not provide access to those parameter tables. VW has no interest in making it easy to do these sorts of upgrades; they would much rather you bought a heavily optioned model to begin with, because those heavily optioned cars are substantially more profitable for them than more basic models are.

-Uwe-

 

[quattrodave]

Hmmmm food for thought.... Let me have a head scratch....

 

[langers2k]

I've had a look at the wiring diagrams and it looks like the pins on the BCM which are connected to the sidelights and DRL's in the elegance are both connected to the LED modules on the VRS.

Does anyone know what input the LED module is expecting? Assuming that it uses 12v on one wire to do full brightness (DRL mode) and 12v on the other to do dimmed brightness (sidelight mode) then it might be as easy as recoding byte 18 as a VRS.

 

[golfi_vend]

Praise our lord Internet.

Pin 1: PO (Positionlight) alle 4 LED`s gedimmt (55 mA)
Pin 2: Masse
Pin 3: DRL bedeutet Day Running Light (also alle 4 zu 100% 380 mA)

 

[langers2k]

Thanks for that golfi_vend - I've also seen reports of pin 1 and 3 being reversed and that one pin is power and the other is dim/full brightness.

In the wiring diagrams I can see that the following pins on the BCM are connected to

VRS (I've made assumptions about what the pins do, namely as 26 and 44 are only on cars without a sidelight fitted in the main cluster)
25 Fog lights
26 Left LED module pin 3 sidelight
44 Right LED module pin 3 sidelight
48 Left LED module pin 1 DRL
49 Right LED module pin 1 DRL

Elegance
25 Fog lights
26 Left sidelight
44 Right sidelight
48 Left DRL
49 Right DRL

Someone must have an idea of what the byte 18 codes should be for RHD VRS and non VRS cars without xenons? I've also been looking for the part number of a VRS BCM but I've not noticed anything yet.

 

[Enriquez]

There is no specified value of byte 18 for VRS model. It's parametrized directly by VAS.
Once, I've looking for that by trying all of the 256 f.... combinations with VCDS, and no success.

One more thing. 1K0 937 087 series has different byte 18 pre-coding table than the newest 1K0 937 087 AN...
So, there will be more complex cobinations for non-VAS users to find out correct CECM type and correct coding, if even possible.

The easiest, legal and cheapest way to retrofit the new bumper from VRS model is just do all the hardware work Yourself and ask dealer to parametrise the light configuration using VAS. If they don't know how to do it, just change the dealer or ask here for instructions.

 

[mtl]

I want to replace the DRLs on a MY12 Octavia Elegance with LEDs but this will cause a blown bulb warning on the dash.

I will start with this and I assume that you do not want to install VRS LEDs, but just put an LED bulb into existing place for DRLs.
Have you tried ticking Byte 27, Bit 2?
I can confirm that it worked on a 2009 Octavia 2 facelift, though it had this BCM installed: 1K0 937 086 F. No bulb warning after coding.

 

[langers2k]

I will start with this and I assume that you do not want to install VRS LEDs, but just put an LED bulb into existing place for DRLs.
Have you tried ticking Byte 27, Bit 2?
I can confirm that it worked on a 2009 Octavia 2 facelift, though it had this BCM installed: 1K0 937 086 F. No bulb warning after coding.

That's exactly what I want to do, I've tried setting byte 27, bit 2 tonight and I still get 'Open or Short to Plus' for both bulbs. I've found a willing helper with Van Can Pro so I may look at the locations suggested earlier in the thread.