Ebay UU headlight fault, HID on stock halogen GTI

[holidaystig]

Hi all

GTI my15

The GTI is now out of warranty , so i want to do some mods

The first mod was to upgrade the halogen headlights with ebay UU headlights

I bought them on ebay from uk (advertised as being for halogen VW equiped cars)

these came with HID globes , ignitors, ballasts, preinstalled

I installed the headlights and for about a week everything was fine, no error codes, performed well (no blinding of others . proper cut off on beam height). ...

then my problem

Left (headlight) indicator remained on , even with key off and locked. Indicator on headlight only at fault.

Throws an error in the Headunit when I use left indicator ( clears after cycling ignition)

other left indicators work as normal (mirror and rear indicators) headlight indicator on solid all the time.

I have checked all fuses cannot find anything blown. Engine bay and behind glovebox all ok.

All my search on the web point to the Body control module. Earlier MK6 MK5 point to a relay on the board as faulty, or a dry solder joint. After further research i now understand MK7 have a different architecture . so before i start pulling things apart ( i have found the BCM behind the glovebox)

I have plugged the genuine halogens headlights back in (to see if ebay headlights are to blame ) and same problem, left headlight indicator (stuck) on.

I could take back to VW dealer, pay for a new BCM (if that is the problem), but i want to sort the problem myself, and they probably will say headlight issue, or will refuse to do it as after market.

I can get a second hand module from the states, i now understand there are low line and high line BCM (i believe to do with the HID)

.... so ...
Any ideas ? will a change through vag-com entry fix the issue, or is the BCM already "blown"

Before i starting looking further, maybe someone already knows of the fix, or suggest where to next



Thanks

Brian

[DV52]

Brian: first, before you spend any more money - get more information about the problem. For example, get hold of a diagnostic device (VCDS, or OBD11, or other) and read the error message that most likely will be present in the BCM relating to the fault. The newer stye modules in the mk7 (yes, they are very differen't to the mk5/mk6) are more informative - so use the data that's available in the car. It may save you lots of wasted time and expense chasing the wrong solution.

Don

PS: don't bother chasing fuses of the exterior lights on a mk7 - they don't have the traditional arrangement of fusing each lamp. Lamp protection on a mk7 is managed directly by the BCM

[holidaystig]

Thanks Don for answering,

i have been reading a lot of your posts, and i was hoping you would read and answer.

It was one of you posts that bought me to this forum, i have also read some of your posts on ross tech

Yes pulling a fuse does have a strange outcome with what is affected. I now understand why there is no fuse labeling on the car or the owners manual as to what the fuse does.
I have found the fuse that cuts the power to the left indicator (also partially cuts SOME of the right headlight). I just pull that at night time to keep the battery full, and not overheat the light.
I know the MK7 will cut all power when the battery gets too low, very clever.

I will take your advice and do a scan for error codes, this is a great idea.

In your opinion, what is the better diagnostic tool? I am ok with spending a couple of hundred dollars to get a good tool. I have seen that in the end they are onlyreading and writing code to the modules

I also own a my12/13 Jetta TDI, so i will use it on that as well

I am a windows software programmer, so i am not afraid of code (i realise it will be a steep learning curve, and my background might mean nothing in this instance, just thought i would mention it )

Thanks

Brian

[DV52]

Brian: Many thanks for your kind words, but I too am just like every other forum member here- trying to learn from my fellow colleagues.

So - as I have already said, the individual lamps are protected generally by the BCM and in particular by the circuitry that is controlled by the Leuchte-sets for each of the 35 external lights on a mk7. Hence the wiring diagrams for a mk7 are absent the traditional in-line fuse for each lamp

I'm not sure what fuse you are pulling, but I suspect that it controls the power circuits for the left-side headlight fitting - thereby affecting a number of lamps (including the turn-signal). Incidentally, there is a fuse labeling diagram for the mk7 (google it to get a copy)

As to your question about which is the better diagnostic tool - I use VCDS, OBD11 and VCP. After a few years experience with these cables/dongles, my personal view is that each has its advantages and disadvantages. Sorry if you view my response as a cop-out, but it's my opinion that the right tool depends on how a prospective purchaser values the particular features of each cable and what their likely use will be over the short to medium term. A number of forum colleagues have debated this question HERE. This thread is ostensibly about OBD11, but if your read all the pages, you will read the debate about each of the competing cables.

Not sure how much advantage your programming background will be to OBD protocols - but your code-cutting skills will certainly be useful in your understanding of digital numbering systems- a very good start point indeed!!

Good luck and remember to try to make a few early errors - it's by far the best learning vehicle!

Don

[holidaystig]

Thanks again for the detailed reply

I read your post on the odbeleven . I have been looking at the different tools for a couple of months now
I have been looking at the various options, the web is wonderful and overloaded with info at the same time
The humble mechanic on youtube gives VCDS a great rap as well

While the genuine cable is much more expensive I will purchase a genuine VCDS Vag-com hex v2 (3 vin) from ross-tech agent in australia . the ebay ones appear to be running the Lite version, and of doubtful quality $58 and i am not that keen on supporting pirates


(ignore the circled fuses in the image, i just found the image on the web, to cold outside at the moment to take a picture of my fuse box)

i have pulled the right green fuse, 40 amp (tallest in the image), this is the left headlight
The left green 40 amp is for the right headlight.

I went old school, started with the high amp fuses first, removing until the lights where off.

Regards
Brian

[holidaystig]

Once i have the cable , i will do a scan, and post the results... fingers crossed

[DV52]

^^^ as I said, the 2 x fuses are the supply points for the left/right headlight fittings

[holidaystig]

thanks for the fuse diagram.. yes these are the fuses i was talking about , my post was not clear.

[holidaystig]

I have the cable and have run a scan

Here is the first entry for the fault
================================
5127 - Bulb for Front Left Turn Signal
B11E8 11 [009] - Short to Ground
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Reset counter: 177
Mileage: 52800 km
Date: 2018.06.04
Time: 06:43:45

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

Short to ground .. But the turn indicator is on all the time .. if i plug in the stock headlight, same behaviour , indicator on.

I have not cleared any codes yet, and i dont want to clear all fault codes, just the fault codes to do with the headlight.

I am thinking the next step is to clear the code on the headlight, plug in the stock headlight and see if the fault comes back. My logic is this will indentify the root cause. Headlight, or something worse

Any ideas?

I can post the full scan file if required

Thanks again

[holidaystig]

Oops ... Faults are not ordered by date

here is the fault list from this module

15 Faults Found:
5127 - Bulb for Front Left Turn Signal
B11E8 11 [009] - Short to Ground
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Reset counter: 177
Mileage: 52800 km
Date: 2018.06.04
Time: 06:43:45


5130 - Bulb for Front Left Turn Signal
B11E8 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 217
Mileage: 53009 km
Date: 2018.06.10
Time: 12:53:38


6666 - Bulb for Low Beam Headlamp Left
B1217 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 3
Reset counter: 228
Mileage: 52423 km
Date: 2018.05.29
Time: 10:32:05


6922 - Bulb for Low Beam Headlamp Right
B1218 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 1
Reset counter: 195
Mileage: 52423 km
Date: 2018.05.29
Time: 10:32:05


7178 - Bulb for High Beam Headlamp Left
B1219 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 3
Fault Frequency: 2
Reset counter: 228
Mileage: 52423 km
Date: 2018.05.29
Time: 10:35:24


10503 - Bulb for Left Tail Light
B12BE 11 [008] - Short to Ground
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 5
Reset counter: 214
Mileage: 52855 km
Date: 2018.06.05
Time: 06:59:35


12810 - Bulb for Right Back-up Light
B12CC 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Reset counter: 217
Mileage: 52091 km
Date: 2018.05.19
Time: 10:55:58


17162 - Bulb for Left DRL and Parking Lamp
B12EA 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Reset counter: 228
Mileage: 52423 km
Date: 2018.05.29
Time: 10:32:08


17418 - Bulb for Right DRL and Parking Lamp
B12EB 15 [008] - Open or Short to Plus
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Reset counter: 222
Mileage: 52423 km
Date: 2018.05.29
Time: 10:32:08


132363 - Voltage Supply; Terminal 30; Left
B140D 13 [008] - Open Circuit
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 16
Reset counter: 228
Mileage: 53008 km
Date: 2018.06.10
Time: 12:19:48


132619 - Voltage Supply; Terminal 30; Right
B140E 13 [008] - Open Circuit
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 3
Reset counter: 222
Mileage: 53008 km
Date: 2018.06.10
Time: 12:19:48


133131 - Voltage Supply Terminal 30
B1423 13 [008] - Open Circuit
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 1
Reset counter: 217
Mileage: 53008 km
Date: 2018.06.10
Time: 12:19:48


133387 - Voltage Supply; Terminal 30 for Central Locking
B140F 13 [008] - Open Circuit
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 1
Fault Frequency: 1
Reset counter: 217
Mileage: 53008 km
Date: 2018.06.10
Time: 12:19:48


197644 - Control Circuit for Fuel Tank Flap
B1263 01 [009] - Electrical Failure
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 4
Fault Frequency: 254
Reset counter: 192
Mileage: 1048574 km
Date: 2000.00.00
Time: 00:00:00


395273 - Control Circuit for Signal Horn
B1344 14 [008] - Open or Short to Ground
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 217
Mileage: 53008 km
Date: 2018.06.10
Time: 11:29:09