Hi all i am looking for a bit of advice with this job.
The vehicle had been off the road for a few months. It has been at other repair shops before coming to me.
It had ABS and engine management faults that were easy enough to fix. And the customer asked me to
fix a number of lighting faults as well. I left that untill last as i thought that would be easy enough,
I found a few faults, blown bulbs and bad connections but i am left with a fault that is causing a problem.
The car is an A6 avant and has light clusters on the rear wing/fender and the tailgate/trunk lid. The problem is
the left hand outer light unit was full of water and the stop/tail light did not work. Also the tail light bulbs
on the tailgate are illuminating but very dimly.
I replaced the left hand outer light and bulb holder as it was obviosly letting in water and the bulb holder was corroded
However the light still did not work. There are two bulbs in this light unit one is a direction indicator and it functions normally.
The other bulb is the one causing the problem. Its a single filament 21 watt bulb that when lit with full battery voltage lights up as the stop light bulb. And it does that correctly.
But swithched on as the Tail light with a lower voltage. It comes on and flashes twice then goes out and flags the fault code. It will also do this if the brake is applied and it is already lit full voltage.
Now i know the comfort module must have a test stratagy to protect the circuit rather than fuses.
and i know the single filament bulb should light dim or bright depending on function, Tail light or brake light, Therefore two different voltages. I tested all the wiring from the comfort module and all seemed ok but to be sure i cut and swapped the two wires for the left and right side at the comfort module plug and the fault moved to the opposite side.
it also had an after market towbar addaptor. Which i removed just in case.
So at this point it looked like to me that the control module had a fault. so i got a second hand one to try.
With matching part number. after fitting it looked like the fault was fixed and the other four bulbs on the tailgate were now brighter matching the outer one but the coding was obviously wrong as it had new faults with the direction indicators. So i altered the coding to match the original and we are back to the same fault as before.
So It looks to me like the coding has been wrong from the start as the car is righthand drive and the existing
code before i touched it is not high enough to include RHD. I have tried altering the coding to include RHD that made
no difference. There are other options that the car has definately not got - HID front lights or LED rear lights for instance. But there are other options that i am unsure of.
I've refitted the original module as the replacement made no difference but also had component protection enabled.
Could the fault just be incorrect programming? if so how do i find the correct coding? Or do I just have to try all the options. And if it is incorrect coding, could that happen by itself?
Thanks for reading.
Alan.
The vehicle had been off the road for a few months. It has been at other repair shops before coming to me.
It had ABS and engine management faults that were easy enough to fix. And the customer asked me to
fix a number of lighting faults as well. I left that untill last as i thought that would be easy enough,
I found a few faults, blown bulbs and bad connections but i am left with a fault that is causing a problem.
The car is an A6 avant and has light clusters on the rear wing/fender and the tailgate/trunk lid. The problem is
the left hand outer light unit was full of water and the stop/tail light did not work. Also the tail light bulbs
on the tailgate are illuminating but very dimly.
I replaced the left hand outer light and bulb holder as it was obviosly letting in water and the bulb holder was corroded
However the light still did not work. There are two bulbs in this light unit one is a direction indicator and it functions normally.
The other bulb is the one causing the problem. Its a single filament 21 watt bulb that when lit with full battery voltage lights up as the stop light bulb. And it does that correctly.
But swithched on as the Tail light with a lower voltage. It comes on and flashes twice then goes out and flags the fault code. It will also do this if the brake is applied and it is already lit full voltage.
Now i know the comfort module must have a test stratagy to protect the circuit rather than fuses.
and i know the single filament bulb should light dim or bright depending on function, Tail light or brake light, Therefore two different voltages. I tested all the wiring from the comfort module and all seemed ok but to be sure i cut and swapped the two wires for the left and right side at the comfort module plug and the fault moved to the opposite side.
it also had an after market towbar addaptor. Which i removed just in case.
So at this point it looked like to me that the control module had a fault. so i got a second hand one to try.
With matching part number. after fitting it looked like the fault was fixed and the other four bulbs on the tailgate were now brighter matching the outer one but the coding was obviously wrong as it had new faults with the direction indicators. So i altered the coding to match the original and we are back to the same fault as before.
So It looks to me like the coding has been wrong from the start as the car is righthand drive and the existing
code before i touched it is not high enough to include RHD. I have tried altering the coding to include RHD that made
no difference. There are other options that the car has definately not got - HID front lights or LED rear lights for instance. But there are other options that i am unsure of.
I've refitted the original module as the replacement made no difference but also had component protection enabled.
Could the fault just be incorrect programming? if so how do i find the correct coding? Or do I just have to try all the options. And if it is incorrect coding, could that happen by itself?
Thanks for reading.
Alan.
Code:
Thursday,02,April,2020,19:05:08:05279
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 19.6.2.2
Data version: 20200210 DS308.0
www.Ross-Tech.com
VIN: WAUZZZ4F66N135251 License Plate: SC06 GOA
Mileage: 269670km-167565mi Repair Order:
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: 4F (4F0)
Scan: 01 03 05 07 08 09 0E 15 16 17 19 1E 37 42 46 47 4F 52 53 56
61 62 72 76
VIN: WAUZZZ4F66N135251 Mileage: 269670km-167565miles
00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
1E-Media Player 2 -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine Labels: 03G-906-016-BLB.clb
Part No SW: 03G 906 016 HS HW: 028 101 255 7
Component: R4 2,0L EDC G000SG 9673
Revision: --H02--- Serial number:
Coding: 0000072
Shop #: WSC 66565 257 00032
VCID: 7BF1AF083AF1FF97F0-802E
2 Faults Found:
005512 - Engine Mount Solenoid Valves (N144/N145)
P1588 - 000 - Open Circuit
Freeze Frame:
Fault Status: 01100000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.03.31
Time: 15:17:24
Freeze Frame:
RPM: 0 /min
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.70 V
Bin. Bits: 00101000
Torque: 0.0 Nm
Torque: 351.4 Nm
005697 - Please check DTC Memory of A/C Controller
P1641 - 000 -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 6
Fault Frequency: 1
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.03.31
Time: 15:17:29
Freeze Frame:
RPM: 0 /min
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.70 V
Bin. Bits: 00101000
Temperature: 11.7°C
(no units): 16.0
Readiness: 0 0 0 1 1
-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4F0-910-517.clb
Part No SW: 4F0 910 517 K HW: 4F0 614 517 K
Component: ESP 8.0 front H04 0090
Revision: 00000000 Serial number: 00000000000000
Coding: 0020855
Shop #: WSC 02325 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. Labels:. 4F0-910-852.clb
Part No SW: 4F0 910 852 HW: 4F0 905 852 B
Component: FBSAUDIC6 ELV H31 0220
Revision: 31050601 Serial number: 10604000325884
Coding: 0000145
Shop #: WSC 00847 210 80521
VCID: 63C1F768A2412757D8-8036
Subsystem 1 - Part No: 4F0 910 131 D
Component: FBSAUDIC6 EZS H45 0070
Subsystem 2 - Part No: 4F0 910 220 D
Component: FBSAUDIC6 IDG H39 0040
No fault code found.
-------------------------------------------------------------------------------
Address 07: Control Head Labels: Redir Fail!
Part No SW: 4F0 910 769 B HW: 4F0 035 769 B
Component: MMI Cockpit H55 0010
Revision: C51500BE Serial number: AUZ6Z3ECB936F3
Coding: 0100102
Shop #: WSC 02323 785 00200
VCID: 2C535C548F1FA82F29-8078
Subsystem 1 - Part No: 4F0 910 609 E
Component: Bedienteil MMIC6H03 0050
Subsystem 2 - Serial number: 00000000311409
Subsystem 3 - Serial number: 0110.01.060000000100011190ÿ
Subsystem 4 - Serial number: 011190ÿ
No fault code found.
-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 4F0-910-043.clb
Part No SW: 4F0 910 043 HW: 4F2 820 043 H
Component: KLIMABETAETIGUNGH12 0170
Revision: 00000030 Serial number: 00000000220187
Coding: 0001300
Shop #: WSC 02325 785 00200
VCID: 5BB1CF889A311F9790-800E
2 Faults Found:
01592 - Air Quality Sensor (G238)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 3
Fault Frequency: 1
Reset counter: 85
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:43:40
Freeze Frame:
Temperature: 12.0°C
00256 - A/C Pressure/Temperature Sensor (G395)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 85
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:43:40
-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 4F0-910-279.lbl
Part No SW: 4F0 910 279 D HW: 4F0 907 279
Component: ILM Fahrer H15 0190
Revision: 00000000 Serial number: 4F0907279
Coding: 0000101
Shop #: WSC 02335 785 00200
VCID: 2A5F5A4C85EBB61FDB-807E
Subsystem 1 - Part No: 4F2 910 113 C Labels: 1KX-955-119.CLB
Component: Wischer AudiC6 H11 0040
Coding: 00022800
Shop #: WSC 02335
Subsystem 2 - Part No: 4E0 910 557 Labels: 8K0-955-559.CLB
Component: REGENLICHTSENSORH10 0050
Coding: 00141886
Shop #: WSC 02335
No fault code found.
-------------------------------------------------------------------------------
Address 0E: Media Player 1 Labels: Redir Fail!
Part No SW: 4F0 910 769 B HW: 4F0 035 769 B
Component: MMI Cockpit H55 0010
Revision: C51500BE Serial number: AUZ6Z3ECB936F3
Coding: 0100102
Shop #: WSC 02323 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags Labels: 4F0-910-655-8R.clb
Part No SW: 4F0 910 655 E HW: 4F0 959 655 B
Component: 4E AIRBAG AUDI8RH29 0280
Revision: 08H29000 Serial number: 0037LD0CEHJK
Coding: 0013381
Shop #: WSC 02325 785 00200
VCID: 295DA54080EDBD07D2-807C
Subsystem 1 - Serial number: 6332CSME0E23094F8
Subsystem 2 - Serial number: 6342CSME0E453D618
Subsystem 3 - Serial number: 6352QSME087120757
Subsystem 4 - Serial number: 6362QSME08714A75K
Subsystem 5 - Serial number: 63734SME086E1F3BG
Subsystem 6 - Serial number: 63834SME08681B777
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 4F0-910-549.lbl
Part No SW: 4F0 910 549 HW: 4F0 953 549 A
Component: Lenksäulenmodul H07 0230
Revision: 00H07000 Serial number: 90026053510119
Coding: 0102042
Shop #: WSC 02323 785 00200
VCID: 66C7EE7C5173527F3F-8032
Subsystem 1 - Part No: XXXXXXXXXXX
Component: Lenkradmodul H07 0090
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments Labels: 4F0-910-xxx-17.lbl
Part No SW: 4F0 910 900 A HW: 4F0 920 950 L
Component: KOMBIINSTR. M73 H11 0660
Revision: 00200000 Serial number: 4RA72VWD5
Coding: 2308443
Shop #: WSC 00999 067 57207
VCID: 1E37869CC9A34ABFB7-804A
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels:. 4F0-910-468.clb
Part No SW: 4F0 910 468 A HW: 4F0 907 468 D
Component: Gateway H11 0070
Revision: 11 Serial number: 13008061050171
Coding: ECEE53C43B2104
Shop #: WSC 02334 785 00200
VCID: 2759A37896F98B77C4-8072
No fault code found.
-------------------------------------------------------------------------------
Address 1E: Media Player 2 Labels: 4E0-910-111.lbl
Part No SW: 4E0 910 111 F HW: 4E0 035 111 A
Component: CD-Changer H44 0470
Revision: 00000000 Serial number: AUZ5ZBG8234089
Shop #: WSC 00000 000 00000
VCID: 1C338C94DFBF58AF59-8048
No fault code found.
-------------------------------------------------------------------------------
Address 37: Navigation Labels: Redir Fail!
Part No SW: 4F0 910 769 B HW: 4F0 035 769 B
Component: MMI Cockpit H55 0010
Revision: C51500BE Serial number: AUZ6Z3ECB936F3
Coding: 0100102
Shop #: WSC 02323 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 4F0-910-793-42.lbl
Part No SW: 4F0 910 793 E HW: 4F0 959 793 E
Component: TSG FA H12 0080
Revision: 00-00000
Coding: 0003610
Shop #: WSC 02327 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:. 4F0-910-289.lbl
Part No SW: 4F0 910 289 G HW: 4F0 907 289 G
Component: Komfortgeraet H22 0170
Revision: 01700022 Serial number: 01009694450000
Coding: 0000763
Shop #: WSC 02335 785 00200
VCID: 2E57565CB903DA3F07-807A
Subsystem 1 - Part No: 1K0 951 605 C
Component: LIN BACKUP HORN H03 1301
Subsystem 2 - Part No: 4F0 910 177
Component: Innenraumueberw.H01 0020
1 Fault Found:
02738 - Bulb for Tail/Brake Light; Left
009 - Open or Short to Ground
Freeze Frame:
Fault Status: 01101001
Fault Priority: 3
Fault Frequency: 1
Reset counter: 85
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:58:50
-------------------------------------------------------------------------------
Address 47: Sound System Labels: 4F0-910-223-AS.lbl
Part No SW: 4F0 910 223 C HW: 4F0 035 223
Component: Amp.-ASK H10 0320
Revision: 33S00001 Serial number: 01001060202052
Coding: 0000103
Shop #: WSC 02335 785 00200
VCID: 1E37869CC9A34ABFB7-804A
No fault code found.
-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II Labels: 4F0-910-280.lbl
Part No SW: 4F0 910 280 HW: 4F0 907 280 A
Component: ILM Beifahrer H10 0080
Revision: Serial number: 00000000175665
Coding: 0001104
Shop #: WSC 02323 785 00200
VCID: 5EB7C69C89230ABFF7-800A
No fault code found.
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 4F0-910-793-52.lbl
Part No SW: 4F0 910 793 E HW: 4F0 959 792 E
Component: TSG BF H12 0080
Revision: 00-00000
Coding: 0003610
Shop #: WSC 02327 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 53: Parking Brake Labels: 4F0-910-801.clb
Part No SW: 4F0 910 801 HW: 4F0 907 801
Component: EPB C63C0030 H03 0030
Revision: C63C0030
Coding: 0000111
Shop #: WSC 02335 785 00200
VCID: 5DB5C190842511A7EE-8008
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio Labels: Redir Fail!
Part No SW: 4F0 910 769 B HW: 4F0 035 769 B
Component: MMI Cockpit H55 0010
Revision: C51500BE Serial number: AUZ6Z3ECB936F3
Coding: 0100102
Shop #: WSC 02323 785 00200
VCID: 2C535C548F1FA82F29-8078
No fault code found.
-------------------------------------------------------------------------------
Address 61: Battery Regul. Labels: 4F0-910-181.lbl
Part No SW: 4F0 910 181 E HW: 4F0 915 181 A
Component: J0644 BEM H12 0590
Revision: 00000000 Serial number: 00000000184828
Shop #: WSC 00838 210 00659
VCID: 2341B768E2C1675798-8076
Subsystem 1 - Part No: 4F0 915 105 C
Component: von VA0 2512080097
Coding: 344630393135313035432056413032353132303830303937
Shop #: WSC 00000 384 00290
5 Faults Found:
02272 - Quiescent Current Stage 1
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 2
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:44:54
02273 - Quiescent Current Stage 2
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 7
Fault Frequency: 2
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:48:04
02276 - Quiescent Current Stage 5
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:48:14
02274 - Quiescent Current Stage 3
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:54:45
02277 - Quiescent Current Stage 6
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 255
Mileage: 269671 km
Time Indication: 0
Date: 2020.04.02
Time: 17:54:56
-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 4F0-910-795.lbl
Part No SW: 4F0 910 795 E HW: 4F0 959 795 E
Component: TSG HL H21 0050
Coding: 0003074
Shop #: WSC 02327 785 00200
VCID: 2E57565CB903DA3F07-807A
No fault code found.
-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 4F0-910-795.lbl
Part No SW: 4F0 910 795 E HW: 4F0 959 794 E
Component: TSG HR H21 0050
Coding: 0003074
Shop #: WSC 02327 785 00200
VCID: 2E57565CB903DA3F07-807A
No fault code found.
-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 4Fx-910-283.lbl
Part No SW: 4F0 910 283 B HW: 4F0 919 283 B
Component: Parkhilfe 4-Kan H09 0030
Revision: 00H09000 Serial number: 11720601003968
Coding: 0000016
Shop #: WSC 131071 1023 2097151
VCID: 2341B768E2C1675798-8076
No fault code found.
End-------------------------(Elapsed Time: 02:44)--------------------------