Mk6 LED Taillights

[sVWatt]

Recon that's a fair price GTD Dubber with fitting and coding. Did you go for OEM tails or aftermarket ones?

[GTD Dubber]

I got the OEM ones through Ozram's contact in Germany.

[andrew7]

^ Same here, very happy with them 12mths on

[will86_]

I got the OEM ones through Ozram's contact in Germany.

me too! its been close to a year.

[CPITUNING]

Just so you guys are aware there are some solutions from JOM available:

JOM - Main page » Catalogue » Vehicle Types » Volkswagen » GOLF VI » Lighting

[Rawcpoppa]

I have a mk6 Jetta and recently installed OEM LED tails. I know they aren't the same car but the mk6 Jetta and Golf share alot of parts underneath. This is my CECM with fault code after installation:

Address 09: Cent. Elect. (J519) Labels: 1K0-937-08x-09.clb
Part No SW: 5K0 937 086 M HW: 5K0 937 086 M
Component: BCM PQ35 M 021 0064
Revision: BC021001
Coding: 08000A3F882DE1C040080080040081E447200088508089605C 8020000040
Shop #: WSC 00066 123 12345
VCID: 3E5DE7A5A9CECAEEBC5

Subsystem 1 - Part No: 1K8 951 171
Component: DWA-Sensor 00 001 0104
Coding: 000000

Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501
Coding: 000000

2 Faults Found:
00984 - Left Tail Light (M4)
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 2
Fault Frequency: 2
Reset counter: 214
Mileage: 35134 km
Time Indication: 0
Date: 2017.14.08
Time: 00:04:01

Freeze Frame:
Term 15 On
Voltage: 12.15 V
ON
ON
OFF
OFF
OFF

00985 - Right Tail Light (M2)
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 2
Fault Frequency: 2
Reset counter: 214
Mileage: 35134 km
Time Indication: 0
Date: 2017.14.08
Time: 00:04:01

Freeze Frame:
Term 15 On
Voltage: 12.15 V
ON
ON
OFF
OFF
OFF

Do you guys have similar models of CECM? I'm thinking of trying the byte 18 set to 15. Do you think this might be bad?

These are the options I see in VCDS:

[AdamD]

Your control module is completely different to that in the Golf, so all bets are off. I'd be contacting Ross-tech for advice if I were you.

[Rawcpoppa]

Your control module is completely different to that in the Golf, so all bets are off. I'd be contacting Ross-tech for advice if I were you.

Ok I will do that but I am itching to try various codes in byte 18.

If I know that my default byte 18 value is 8C can I try other values and just go back to 8C if the other values cause trouble? Can any values in byte 18 damage the cecm preventing me from going back to 8C?

[AdamD]

Ok I will do that but I am itching to try various codes in byte 18.

If I know that my default byte 18 value is 8C can I try other values and just go back to 8C if the other values cause trouble? Can any values in byte 18 damage the cecm preventing me from going back to 8C?

Damage is pretty unlikely; the risk is low, but there is always some risk. I'm not about to tell you that you should do it, but if it was me I would probably try a few of the more likely values myself.

Changes in coding to byte 18 that can't be easily reverted have been documented, but the only case I know of with that is when the original coding was 00, and in order to go back to a factory coding there was a need to code to another particular value first, and then revert to 00. And I don't know how much of all that was down to actual understanding of the system, and how much was down to guesswork and observation. (I know that one of the coding boxes that one of the online retailers sold along with LED tail lights did this.)

[Rawcpoppa]

Ok. I wonder why VW puts the byte 18 value back to 00 to hide the true value in some cars.

Should I discount using values that are presets for other vehicles? e.g. 04 for Golf GTI or can codes be shared between vehicles models?