Please post the original coding - before any modifications were doneActual long coding of BCM is:
62 A0 30 38 0A 21 20 32 00 20 09 F4 2C 29 8C 54 F0 00 60 F0 60 46 4D 60 32 04 00 22 08 00
Please post full VCDS log of the faults - the BCM section.faults still remain in unit when I read it by VCDS.
No coding will fix aftermarket LED bulbs fitted into factory headlights. You need resistors so it does not trigger canbus faults
Will do ASAP. Thank you.Please post the original coding - before any modifications were done
Please post adaptation map of the BCM.
Please post full VCDS log of the faults - the BCM section.
Original coding: 62A030380A212032002009F42C298C544000600060464D60320400220800Please post the original coding - before any modifications were done
Please post adaptation map of the BCM.
Please post full VCDS log of the faults - the BCM section.
Thanks. Nothing obvious to tweak neither in coding nor adaptations - all the known modifications seem to be in place.Original coding: 62A030380A212032002009F42C298C544000600060464D60320400220800
BCM map attached. Its in Czech so I hope its no problem.
I didnt try to re-connect battery. I only reset the BCM after coding via VCDS. Will try.Thanks. Nothing obvious to tweak neither in coding nor adaptations - all the known modifications seem to be in place.
Have you disconnected the starter battery after the coding changes (for a few minutes)? Sometimes the changes don't work without cycling the power (known issue in this BCM but the root cause unknown, seems to be a bit random).
What were the fault codes?
Saturday,26,November,2022,19:35:59:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8.1 x64
VCDS Version: 21.3.0.0 (x64)
Data version: 20210226 DS325.0
www.Ross-Tech.com
VIN: License Plate: 07/06/23
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Address 09: Cent. Elect. Labels: 7E0-937-BCM-V1.clb
Control Module Part Number: 7E0 937 090 B HW: 7E0 937 090
Component and/or Version: BCM PQ25 Max4 H81 0744
Software Coding: A0AC39BA0AF3341193284F747EEB9E74C08C730F60C97940320400230840
Work Shop Code: WSC 02737 022 167554
VCID: 2A5BB7AF45FF20DBBD-807E
3 Faults Found:
00978 - Lamp for Low Beam; Left (M29)
010 - Open or Short to Plus - Intermittent
Freeze Frame:
Fault Status: 00101010
Fault Priority: 3
Fault Frequency: 26
Reset counter: 207
Mileage: 90222 km
Time Indication: 0
Date: 2005.14.14
Time: 14:26:01
01495 - Bulb for High-Beams; Left (M30)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 166
Mileage: 90159 km
Time Indication: 0
Date: 2005.14.13
Time: 12:39:49
01499 - Bulb for High-Beams; Right (M32)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 166
Mileage: 90159 km
Time Indication: 0
Date: 2005.14.13
Time: 12:39:49
Yep. Straight back on as soon as dipped beam comes on.Do they come back immediately after you clear them ?
I had something similar on mine first when I did the retrofit but only on one side (with limited coding info at the time) and disabling lamp monitoring cleared it but it came back after a year or two and ended up being a faulty/twitchy module that errored sometimes and replacing it sorted the issue
I also saw a headlight delay on one side (main and dip)
That's my job for tomorrow buddy, will post resultsYes the headlight module screwed to the headlight
As you only have low beam fault on one side then I guess you have the option of swapping the module side to side to prove it ?
Hello, car has returned so I have tried disconnect battery. No change. Should it be caused by BCM itself ? Its strange that faults are related only to H4 bulbs. Not DLR, parking lights or reverse lights (all are also LED). I am thinging about trying of another unit with same part number. Or can you recommend another one with a different part number ?Thanks. Nothing obvious to tweak neither in coding nor adaptations - all the known modifications seem to be in place.
Have you disconnected the starter battery after the coding changes (for a few minutes)? Sometimes the changes don't work without cycling the power (known issue in this BCM but the root cause unknown, seems to be a bit random).
What were the fault codes?
I guess it's just internal fault detecting tolerances are different on different circuits.Its strange that faults are related only to H4 bulbs. Not DLR, parking lights or reverse lights (all are also LED)
Seems more to be working per design? I do not expect another BCM to behave any differently.Should it be caused by BCM itself ?
Well i swapped my modules over and currently am not getting any fault codes? will wait and see..That's my job for tomorrow buddy, will post results
Fault has come back now on opposite site so definitely and fortunately a replacement module needed.Do they come back immediately after you clear them ?
I had something similar on mine first when I did the retrofit but only on one side (with limited coding info at the time) and disabling lamp monitoring cleared it but it came back after a year or two and ended up being a faulty/twitchy module that errored sometimes and replacing it sorted the issue
I also saw a headlight delay on one side (main and dip)
Thanks Robert.I would stick to the same type as you have used before.
Some day I will try to post some details on my findings comparing different variants of power modules.
I am looking forward to this postI would stick to the same type as you have used before.
Some day I will try to post some details on my findings comparing different variants of power modules.
Confused and scratching my head here!?Fault has come back now on opposite site so definitely and fortunately a replacement module needed.
QUESTION... I am seeing modules available online with 7pp941571 (AC) / 7pp941571 (AB) / 7pp941571 (AE),
Is there any difference or should i stick to the same as my previous module (A) or (AC)?
@Robert
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