How to re-enable disabled DRLs?

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jjjs
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Posts: 15

How to re-enable disabled DRLs? Jun 11, 2022 2:12:39 GMT gncsf likes this

Quote

Post by jjjs on Jun 11, 2022 2:12:39 GMT

Just received my OBDeleven and while experimenting with Long Coding I somehow completely lost my DRLs. I only made a few changes within module 09 - Central Electronics, but no matter what I do I can't get them to come back on! Any advice?

Here's everything I've tried so far:

Reviewed history and reverted all changes
Tested changing various DRL-related coding values.
Tested different "Lighting" options in Byte 18 including recommended Jetta NAR
Checked all fuses
Checked LED DRL upgrade and factory bulbs
Removed Euro switch and tried factory manual light switch.

My Euro switch and LED DRL upgrades have never caused a problem. Only fault codes I consistently receive are related to my parking lights, but that's another story.

Here's a copy of my history (not up to date). Somewhere in here is where my DRLs stopped working:

OBDeleven vehicle history log



Date: 2022-05-28 19:07



    VIN: 3VW637AJ1DM222788

    Car: Volkswagen Jetta Hybrid

    Year: 2013

    Body type: Saloon

    Engine: CNLA 110 kW (150 HP) 1.4 l

    Mileage: 123800 KM



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180880010000E4416006FA4680899064802604E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064802604E043

    Mileage: 123680 km

    Date: 2022-05-28 14:54



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064802604E043

    New value:

        77200A30812916C400180880010000E4416006FA4680899064802604E043

    Mileage: 123680 km

    Date: 2022-05-28 14:54



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064802600E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064802604E043

    Mileage: 123680 km

    Date: 2022-05-28 14:50



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064802E00E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064802600E043

    Mileage: 123680 km

    Date: 2022-05-28 14:50



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064802600E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064802E00E043

    Mileage: 123680 km

    Date: 2022-05-28 14:50



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064800600E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064802600E043

    Mileage: 123680 km

    Date: 2022-05-28 14:50



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA46808990E4800600E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064800600E043

    Mileage: 123680 km

    Date: 2022-05-28 14:49



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30812916C400180881010000E4416006FA4680899064800600E043

    New value:

        77200A30812916C400180881010000E4416006FA46808990E4800600E043

    Mileage: 123680 km

    Date: 2022-05-28 14:49



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912916C400180881010000E4416006FA4680899064800600E043

    New value:

        77200A30812916C400180881010000E4416006FA4680899064800600E043

    Mileage: 123680 km

    Date: 2022-05-28 14:45



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912916C400180881010000E4416006FA468089B064800600E043

    New value:

        77200A30912916C400180881010000E4416006FA4680899064800600E043

    Mileage: 123440 km

    Date: 2022-05-23 06:22



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400180881010000E4416006FA468089B064800600E043

    New value:

        77200A30912916C400180881010000E4416006FA468089B064800600E043

    Mileage: 123440 km

    Date: 2022-05-23 06:19



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000E4416006FA468089B064800600E043

    New value:

        77200A30912B16C400180881010000E4416006FA468089B064800600E043

    Mileage: 123440 km

    Date: 2022-05-23 06:18



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416006FA468089B064800600E043

    New value:

        77200A30912B16C400980881010000E4416006FA468089B064800600E043

    Mileage: 123440 km

    Date: 2022-05-23 06:15



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416006FA468089B064800604E043

    New value:

        77200A30912B16C400980881010000A4416006FA468089B064800600E043

    Mileage: 123430 km

    Date: 2022-05-23 05:09



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416006FA468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416006FA468089B064800604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:08



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416006F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416006FA468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:06



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416003F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416006F8468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:06



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416001F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416003F8468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:05



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000A4416006F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416001F8468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:05



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000E4416006F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000A4416006F8468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:03



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000E4416006F8468089B064802604E043

    New value:

        77200A30912B16C400980881010000E4416006F8468089B064802604E043

    Mileage: 123430 km

    Date: 2022-05-23 05:01



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000E4416006F8468089B064802604A043

    New value:

        77200A30912B16C400980885010000E4416006F8468089B064802604E043

    Mileage: 122890 km

    Date: 2022-05-20 23:58



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000E4416006F8468089B064802600A043

    New value:

        77200A30912B16C400980885010000E4416006F8468089B064802604A043

    Mileage: 122890 km

    Date: 2022-05-20 23:57



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000E4416006FF468089B064802600A043

    New value:

        77200A30912B16C400980885010000E4416006F8468089B064802600A043

    Mileage: 122890 km

    Date: 2022-05-20 23:55



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000E4416000FF468089B064802600A043

    New value:

        77200A30912B16C400980885010000E4416006FF468089B064802600A043

    Mileage: 122890 km

    Date: 2022-05-20 23:55



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

Backup

    Control unit: 09 Central Electrics

    System description: BCM PQ35 B

    Software number: 5K0937084J

    Software version: 1068

    Hardware number: 5K0937084J

    Hardware version: 021

    Backup name: Central Electronics 2

    Long coding: 

        77200A30912B16C400980885010000E4416000FF468089B064802600A043

    Adaptations:

        Channel 003: 2

        Channel 005: 1

        Channel 006: 1

        Channel 010: 0

        Channel 011: 1

        Channel 012: 1

        Channel 013: 2

        Channel 017: 1

        Channel 019: 0

        Channel 022: 0

        Channel 023: 15

        Channel 024: 30

        Channel 025: 15

        Channel 027: 200

        Channel 029: 0

        Channel 031: 3

        Channel 032: 0

        Channel 033: 5

    Mileage: 122890 km

    Date: 2022-05-20 23:51



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000C4416000FF468089B064802600A043

    New value:

        77200A30912B16C400980885010000E4416000FF468089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:44



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010100C4416000FF468089B064802600A043

    New value:

        77200A30912B16C400980885010000C4416000FF468089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:39



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000C4416000FF468089B064802600A043

    New value:

        77200A30912B16C400980885010100C4416000FF468089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:39



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

Adaptation

    Control unit: 09 Central Electrics

    Channel: 24

    Old value: 60

    New value: 30

    Mileage: 122880 km

    Date: 2022-05-20 19:36



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

Adaptation

    Control unit: 09 Central Electrics

    Channel: 23

    Old value: 60

    New value: 15

    Mileage: 122880 km

    Date: 2022-05-20 19:35



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980885010000C4416000FF448089B064802600A043

    New value:

        77200A30912B16C400980885010000C4416000FF468089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:24



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        77200A30912B16C400980881010000C4416000FF448089B064802600A043

    New value:

        77200A30912B16C400980885010000C4416000FF448089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:15



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

Long coding

    Control unit: 09 Central Electrics

    Old value:

        67200A30912B16C400980881010000C4416000FF448089B064802600A043

    New value:

        77200A30912B16C400980881010000C4416000FF448089B064802600A043

    Mileage: 122880 km

    Date: 2022-05-20 19:13

dv52 (Australia)
Moderator

Posts: 6,059

How to re-enable disabled DRLs? Jun 11, 2022 21:38:22 GMT

Quote

Post by dv52 (Australia) on Jun 11, 2022 21:38:22 GMT

hmm.......... so this is a PQ35 platform vehicle (look at the 2nd line in your back-up records)? Very different to the MQB platform cars in your first post - on the Golf mk7 forum!!

Alas- I know very little about these older cars - so not much help!!

However - I note that the oldest "old value" for long-code string on the central electrics module is

67200A30912B16C400980881010000C4416000FF448089B064802600A043

And the newest "new value" for this module is:

77200A30812916C400180881010000E4416006FA4680899064802604E043

If no one is able to fix your DRL matter - maybe revert to the first setting above (yes, it will revert ALL changes - but logic suggests that it should fix your DRL problem if the error wasn't on the car on the date of the earliest record in your data dump)

Don

Last Edit: Jun 11, 2022 21:40:59 GMT by dv52 (Australia)

Please don't ask questions about car coding/repair via the forum "Message" function. The better place for such dialogue is in the forum proper. That way, the wider expertise of the entire forum community can be applied to solve your problem - thank you

jjjs
New Member

Posts: 15

How to re-enable disabled DRLs? Jun 13, 2022 18:14:31 GMT

Quote

Post by jjjs on Jun 13, 2022 18:14:31 GMT

Yeah, my original post was completely off base. Pls feel free to remove it from that thread...

I actually did revert all my changes back to match the original (oldest) long coding string. Unfortunately it didn't help! How can completely reverting all my changes not resolve the issue??

PS reading the words "these older cars" felt like a punch in the gut lol

dv52 (Australia)
Moderator

Posts: 6,059

How to re-enable disabled DRLs? Jun 13, 2022 21:33:21 GMT

Quote

Post by dv52 (Australia) on Jun 13, 2022 21:33:21 GMT

Jun 13, 2022 18:14:31 GMT jjjs said:

I actually did revert all my changes back to match the original (oldest) long coding string. Unfortunately it didn't help! How can completely reverting all my changes not resolve the issue??

Again with the caveat that my understanding of PQ36 cars ain't good - the obvious answer is that if the long-code string is correctly reverted and the problem remains - the problem isn't caused the long-code!! Meaning that the problem is caused by a change to one or more adaptation channel values

Jun 13, 2022 18:14:31 GMT jjjs said:

PS reading the words "these older cars" felt like a punch in the gut lol

OK- my "older car" reference wasn't intended as a value judgement - it was meant as a statement of fact (which it is)!!

jjjs
New Member

Posts: 15

How to re-enable disabled DRLs? Jun 19, 2022 4:59:39 GMT

Quote

Post by jjjs on Jun 19, 2022 4:59:39 GMT

Jun 13, 2022 21:33:21 GMT dv52 (Australia) said:

I did a lot more research and I think this issue was caused by changing Byte 18. Apparently, the manufacturer coding of "00" is just a facade hiding the true value. Once you change that "00" to something else, changing it back to "00" won't revert your changes because that wasn't the original value to begin with. Some theorize this is done to alert dealers that the coding has been messed with.

I've tried several alternate values trying to find the right "OEM look" for my car, but no luck yet. Sadly, some state even if you find a working value the car's lighting is never really 100% (i.e. dimmed parking or fog lights).

I read somewhere it's possible to swap pins for the parking and DRLs, so a few days ago I unplugged two harnesses from the CECM under the dash. I plugged them back in without making any adjustments and now half my exterior lights are out including front right turn signal, left rear taillight, reverse light and right high beam.

Any suggestions on this one??

jjjs New Member Posts: 15	How to re-enable disabled DRLs? Jun 30, 2022 11:32:56 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by jjjs on Jun 30, 2022 11:32:56 GMT Was able to fix the CECM issue. It was a 40A fuse in my engine bay. Still no DRLs though. They get the same ~0.5V that the other headlights get when inactive, but always

gncsf New Member Posts: 4	How to re-enable disabled DRLs? Sept 4, 2022 18:10:30 GMT via mobile Quote Select Post Deselect Post Link to Post Back to Top Post by gncsf on Sept 4, 2022 18:10:30 GMT Hi. did you solve the problem i am also dealing with the same problem

jjjs
New Member

Posts: 15

How to re-enable disabled DRLs? Feb 20, 2023 8:21:08 GMT

Quote

Post by jjjs on Feb 20, 2023 8:21:08 GMT

For those who stumble upon this thread, make sure the one-click app "DRL with ADL" is OFF.

If you still have lighting issues and have touched Byte 18 coding, you'll need to experiment with different options for Byte 18. Some options work better than others, but I found the best to be "00010100". Only issues I get "Rear Left Fog" and "Rear Right/Left Side Light" errors whenever I start the car, but it's a small price to pay to get all your lights back functioning normally.

I eventually found and restored my original OEM coding for 09 Central Electronics, however I still get the same rear fog/side light issues. Here's the OEM code for a 2013 Jetta Hybrid if anyone's curious: 67200A30912B16C400980881010000C4416000FF448089B064802600A043

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How to re-enable disabled DRLs?

Post by jjjs on Jun 11, 2022 2:12:39 GMT

Post by dv52 (Australia) on Jun 11, 2022 21:38:22 GMT

Post by jjjs on Jun 13, 2022 18:14:31 GMT

Post by dv52 (Australia) on Jun 13, 2022 21:33:21 GMT

Post by jjjs on Jun 19, 2022 4:59:39 GMT

Post by jjjs on Jun 30, 2022 11:32:56 GMT

Post by gncsf on Sept 4, 2022 18:10:30 GMT

Post by jjjs on Feb 20, 2023 8:21:08 GMT

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