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Post by venigo on Dec 1, 2020 17:29:11 GMT
Hi all,
I own two years now a Golf mk 7.5 from late 2017. From the very first day I got an (sporadic) error on the cluster about a bulb error on the right back taillight. Since the units are led, I can't check or replace the bulbs.
Back to the original VW dealer but there are no problems known about this and there are no recalls, they did nothing. When I check for this code at audi there are some recalls about this issue known.
I get the error sporadic when starting the car and pressing the brakes. Sometimes it doesn't come up.
BCM Info:
Software: 0236
Hardware: 5Q0937084CG
Hardware version: H34
Fault:
B12BF15 - lampje voor rechterachterlicht Onderbreking/kortsluiting met plus
Permanent
Date: 2020-12-01 17:49:06
Mileage: 28974 km
Prioriteit: 2
teller storingfrequentie: 1
Verleerteller: 203
Status contact 15: aan
Status contact 50: uit
Spanning: 14.6 V
Buitentemperatuur: 9.0 °C
Status Bremslichtschalter (HW): uit
Status Bremslichtschalter (CAN): uit
uit: Niet bediend
stadslicht: Niet bediend
Automatische aansturing rijverlichting: Bediend
Dimlicht: Niet bediend
Parkeerlicht li: Niet bediend
Parkeerlicht re: Niet bediend
Letzte Weckursache/ Werte [00;2E]: keine Störschutzursache
CAN-Bus_aktiv: aan
--
I checked the adaptions in leuchte21br rc8 and changed the following:
Lasttyp 21 from Allgemeine led to Bremsleuchten
Lampendefekbitposition 21 from 19 to 20
Fehlerort mittleres byte dtc... from 2d to 3a
But this makes no difference. The error is from the start only on the right light, but it functions normally. Wiring is also correct and fuses to.
Does someone maybe know how to disable this annoying message, as there are no recalls/svm update (known to me) avaible?
Thank in advance!
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Post by dv52 (Australia) on Dec 1, 2020 20:09:39 GMT
venigo: Hi. please make a back-up of your central electrics module and paste a link here Don
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Post by venigo on Dec 1, 2020 22:27:08 GMT
Hi Don, Attached the log. The doorlight fault is also some weird stuff. Door light was retrofitted, correctly, but can't seem to get rid of that error.. Do I have something wrong in the adaptions? But if it was something like that, I should have it on the left side to I guess. The taillight function is further working correctly (glad to..) Attachments:history incl faults.txt (241.87 KB)
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Post by dv52 (Australia) on Dec 1, 2020 23:31:55 GMT
venigo : hmm.......... as currently programmed, your hex09 module has the Parking Light function and the single-side-Parking-Light (SSPL) function at zero illumination for both Brake lights. This can't be road legal in your country. The other oddity is also the right-side Brake light is programmed with the left-side SSPL function.
try these changes :->
Leuchte21BR RC8:
Lichtfunktion D 21 > Parklicht rechts
Dimmwert CD 21> 28
Leuchte20BR LA71: Dimmwert CD 20> 28
Don
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Post by venigo on Dec 2, 2020 10:10:53 GMT
Hi Don, Thanks for the reply. Adapted your suggestions only (one) dtc still comes on. B12BF15. When I set the light switch off and clear dtc and press the brakes > no dtc. When the light switch is at auto and the lights are on, I get the dtc. Also without brakes. So the symptons are when the lights are on. Are there any leuchte related when lights are on and linked to right back taillight / low beam light beside 21BR RC8? Fault info: B12BF15 - lampje voor rechterachterlicht Onderbreking/kortsluiting met plus Permanent Date: 2020-12-02 11:13:34 Mileage: 28978 km Prioriteit: 2 teller storingfrequentie: 1 Verleerteller: 203 Status contact 15: aan Status contact 50: uit Spanning: 14.8 V Buitentemperatuur: 9.0 °C Status Bremslichtschalter (HW): uit Status Bremslichtschalter (CAN): uit uit: Niet bediend stadslicht: Niet bediend Automatische aansturing rijverlichting: Niet bediend Dimlicht: Bediend Parkeerlicht li: Niet bediend Parkeerlicht re: Niet bediend Letzte Weckursache/ Werte [00;2E]: gültiges Funktelegramm CAN-Bus_aktiv: aan |
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Post by dv52 (Australia) on Dec 2, 2020 20:58:32 GMT
^^^hmm........... what a mess- Who programmed your rear lights?
Just noticed in your new back-up file that the 2 x Brake light leuchte-sets are programmed for incandescent lights, but your car actually has LED fittings (I think). Try changing Lasttyp to 34 -LED Bremsleuchten on Leuchte20BR LA71 and Leuchte21BR RC8Don |
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Post by venigo on Dec 2, 2020 21:57:22 GMT
Hi Don, Honestly, the bcm is a retrofitted one. Updated by SVM and did do all factory codings and adaptions by odis. Retrofitted seat heating / ergo active seats, so the bcm was a midline and replaced to a high and updated and coded. It is indeed weird that it was @ channel 13 because the standard facelift taillights are led to. When I turn terminal 15 (light switch) off, clear dtc. The dtc doesnt appear. When low beam / city lights are on and when terminal 15 is on, the dtc appears. I played a bit with the led value (you can see in the log, haha) from 100 to 127 etc. To test, but these are back to 100 (else brake always on). Sorry for that. Also tried the 39 instead of 34 and some couple more, but there is no difference on that. I noticed one time, I did get beside B12BF15 a B12CF15 dtc. (lamp2). When I check at audi recalls (https://static.nhtsa.gov/odi/tsbs/2016/SB-10094126-0699.pdf) it could also be related to the licenseplate led lights or trunk stuff (when trunk is open, the lights go on.. that trunk tail light tweak). I am almost thinking that I am at the wrong channel for this light dtc, since it is not linked/related to the brakes. (And I am almost intent to dump the ecu and remove the p code in winols... grrrr haha). Are there any other channels for right taillight? history.txt (838.83 KB) |
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Post by dv52 (Australia) on Dec 3, 2020 5:14:08 GMT
My suspicion is that you have the incorrect memory locations for Lamp monitoring - try this Leuchte24SL HRA65-Fehlerort mittleres Byte DTC-DFCC 24 > 2A (36) Then try clearing the DTC - if problem still exists - leave above and try this Leuchte27NSL RC6-Lampendefektbitposition 27 > 1A (0) Then try clearing DTC again - if problem persists - leave above and try this Leuchte23SL HLC10-Fehlerort mittleres Byte DTC-DFCC 23 > 29 (35) The bracketed values are your current settings
Don
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Post by venigo on Dec 3, 2020 16:43:24 GMT
Hi Don, I tried the changes. But when the second one is adapted (1A). The error comes up in instrument and doesn't dissappear. Got two dtcs on that: Fout codes: B12BF15 - lampje voor rechterachterlicht Onderbreking/kortsluiting met plus Permanent B12C115 - lampje 2 voor rechterachterlicht Onderbreking/kortsluiting met plus Sporadisch Now I don't like that orange light (because it is not correct), I had currently set the bits at 0.. And now there is no fault (it is logical, because monitoring bit and dtc is at 0). Aside this issue, I noticed the leaving home lights are not on. But this is something else. Any idea where to find the correct monitoring bits (since the ones that are from factory coding/adaptions also are not correct..) Attachments:history 1.zip (186.79 KB)
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Post by dv52 (Australia) on Dec 5, 2020 21:25:12 GMT
venigo : If you have set the fault monitoring channels to zero and the error messages have cleared, my suspicion in my last post is correct. No - I don't have a list of the factory settings for your particular BCM (5Q0-937-084-CG), but I was able to find a 5Q0-937-084-CF in my database.
Here are the channel settings for the tail lights for LED fittings:
Right-side
Leuchte16BLK SLB35BLK SL KC9 : Fehlerort mittleres Byte DTC_DFCC 16 > 36
Leuchte16BLK SLB35BLK SL KC9 : Lampendefektbitposition 16 > 0
Leuchte18BLK HLA60 : Fehlerort mittleres Byte DTC_DFCC 18 > 16
Leuchte18BLK HLA60 : Lampendefektbitposition 18 > 8
Leuchte20BR LA71 : Fehlerort mittleres Byte DTC_DFCC 20 > 2B
Leuchte20BR LA71 : Lampendefektbitposition 20 > 9
Leuchte23SL HLC10 : Fehlerort mittleres Byte DTC_DFCC 23 > 29
Leuchte23SL HLC10 : Lampendefektbitposition 23 > 0A
Leuchte26NSL LA72 : Fehlerort mittleres Byte DTC_DFCC 26 > 2F
Leuchte26NSL LA72 : Lampendefektbitposition 26 > 1C
Leuchte28RFL LC11 : Fehlerort mittleres Byte DTC_DFCC 28 > 31
Leuchte28RFL LC11 : Lampendefektbitposition 28 > 0B
Left-side
Leuchte17TFL R BLK SRB3TFL R BLK SR KC3 : Fehlerort mittleres Byte DTC_DFCC 17 > 35
Leuchte17TFL R BLK SRB3TFL R BLK SR KC3 : Lampendefektbitposition 17 > 0
Leuchte19BLK HRC31 : Fehlerort mittleres Byte DTC_DFCC 19 > 18
Leuchte19BLK HRC31 : Lampendefektbitposition 19 > 18
Leuchte21BR RC8 : Fehlerort mittleres Byte DTC_DFCC 21 > 2D
Leuchte21BR RC8 : Lampendefektbitposition 21 > 19
Leuchte24SL HRA65 : Fehlerort mittleres Byte DTC_DFCC 24 > 2A
Leuchte24SL HRA65 : Lampendefektbitposition 24 > 1A
Leuchte27NSL RC6 : Fehlerort mittleres Byte DTC_DFCC 27 > 0
Leuchte27NSL RC6 : Lampendefektbitposition 27 > 0
Leuchte29RFL RA64 : Fehlerort mittleres Byte DTC_DFCC 29 > 32
Leuchte29RFL RA64 : Lampendefektbitposition 29 > 1B
One-only lights (3rd Brake, license-plate, rear fog-light)
Leuchte22BR MA57 : Fehlerort mittleres Byte DTC_DFCC 22 > 2C
Leuchte22BR MA57 : Lampendefektbitposition 22 > 29
Leuchte25KZL HA59 : Fehlerort mittleres Byte DTC_DFCC 25 > 30
Leuchte25KZL HA59 : Lampendefektbitposition 25 > 28
Leuchte30FR LC72 : Fehlerort mittleres Byte DTC_DFCC 30 > 2
Leuchte30FR LC72 : Lampendefektbitposition 30 > 0
Don
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