Audi A5 2008 B8 Brake switch issues.

   #1  

Ej2_sir

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C?ID=373261
Hi. First post here so hopefully its all done correct!

New to VAGs and VCDS but bought a 2007 Audi A5 3.0tdi quattro and VCDS. Scanned and have a fault of
4366 - Brake Switch (F)
P0703 00 [044] - Electrical Malfunction
and also
00526 - Brake Light Switch (F)
008 - Implausible Signal - Intermittent
I have tried to reset these but they constantly return. I then replaced the switch with a aftermarket part. The faults remained after reset. I then replaced the switch with an OE one. Fault still remains (followed Elsawin proceedure eg do not move pedal, click in locating tabs and then rotate purple locking tabs clockwise). I checked the bulbs and all brake lights are working correctly.
Today I got the ESP light on and the errors appear to have moved into the ABS section. Attached full scan if anyone can assist!
Code:
Thursday,15,August,2019,16:47:27:35605
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.1.0 (x64)  HEX-V2 CB: 0.4508.4
Data version: 20190529 DS308.0
www.Ross-Tech.com


VIN: WAUZZZ8T88A005904   License Plate: 
Mileage: 152760km-94920mi   Repair Order: esp fault



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


Chassis Type: 8T-AU48 (8T0)
Scan: 01 03 05 06 07 08 09 0E 0F 10 15 16 17 19 1E 36 37 42 46 47
          52 53 55 56 57 77

VIN: WAUZZZ8T88A005904   Mileage: 152760km-94920miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
06-Seat Mem. Pass -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: Cannot be reached 1100
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
1E-Media Player 2 -- Status: OK 0000
36-Seat Mem. Drvr -- 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
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
57-TV Tuner -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAPA)       Labels:| 059-907-401-V1.clb
   Part No SW: 8K0 907 401     HW: 8K0 907 401 
   Component: 3.0TDI EDC17  H01 0008  
   Revision: --H01---    
   Coding: 01140023180F0118
   Shop #: WSC 06325 000 00000
   ASAM Dataset: EV_ECM30LTDIA5 A01009
   ROD: EV_ECM30LTDIA5_A01.rod
   VCID: 6889B88AA2FB6A17629-803C

4 Faults Found:
4698 - Please Check Fault Codes in Control Module for ABS Brakes 
          U1017 00 [036] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 152710 km
                    Date: 2019.08.15
                    Time: 15:36:30

                    Engine speed: 792.50 /min
                    Normed load value: 52.2 %
                    Vehicle speed: 10 km/h
                    Coolant temperature: 54 °C
                    Intake air temperature: 19 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.040 V
                    Unlearning counter according OBD: 40
                    Engine speed: 795.5 /min
                    Vehicle speed: 23.69 km/h
                    CCS target speed: 0.00 km/h
                    CCS status-Bits 0-7: 11001101 
                    Cr Ctl st Shut Offirev-Bits 0-7: 00000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00010000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 10000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00001101 
                    Cr C st Key 0-Bits 0-7: 00000000 
                    Cr C st Key 0-Bits 0-7: 00000000 

4699 - Please Check Fault Codes in Control Module for ABS Brakes 
          U1017 00 [036] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 254
                    Mileage: 152710 km
                    Date: 2019.08.15
                    Time: 15:36:30

                    Engine speed: 792.00 /min
                    Normed load value: 51.8 %
                    Vehicle speed: 10 km/h
                    Coolant temperature: 54 °C
                    Intake air temperature: 19 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 13.940 V
                    Unlearning counter according OBD: 40
                    Engine speed: 793.5 /min
                    Vehicle speed: 23.89 km/h
                    CCS target speed: 0.00 km/h
                    CCS status-Bits 0-7: 11001101 
                    Cr Ctl st Shut Offirev-Bits 0-7: 00000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00010000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 10000000 
                    Cr Ctl st Shut Offrev-Bits 0-7: 00001101 
                    Cr C st Key 0-Bits 0-7: 00000000 
                    Cr C st Key 0-Bits 0-7: 00000000 

4366 - Brake Switch (F) 
          P0703 00 [044] - Electrical Malfunction
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Mileage: 152434 km
                    Date: 2019.08.13
                    Time: 15:19:50

                    Engine speed: 1358.50 /min
                    Normed load value: 85.5 %
                    Vehicle speed: 51 km/h
                    Coolant temperature: 50 °C
                    Intake air temperature: 24 °C
                    Ambient air pressure: 1410 mbar
                    Voltage terminal 30: 13.960 V
                    Unlearning counter according OBD: 40
                    Engine speed: 1749.5 /min
                    Vehicle speed: 38.31 km/h
                    Vehicle voltage terminal 30: 13680 mV
                    Accelerator position: 0.00 %
                    Limiting torque: 395.2 Nm
                    Co Eng st: COENG_RUNNING
                    Cr C st Key 0-Bits 0-7: 00000000 
                    Cr C st Key 0-Bits 0-7: 00000000 

7900 - Right Engine Mount Solenoid Valve (N145) 
          P1577 00 [040] - Open Circuit
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 18
                    Mileage: 152416 km
                    Date: 2019.08.12
                    Time: 17:26:55

                    Engine speed: 679.00 /min
                    Normed load value: 25.9 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 54 °C
                    Intake air temperature: 23 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.160 V
                    Unlearning counter according OBD: 35
                    Engine speed: 679.0 /min
                    Vehicle speed: 0.00 km/h
                    Engine mounting valve: right: activation: 0.00 %
                    Engine mounting valve: left: activation: 0.00 %
                    Gearbox mounting valve 1: activation: 0.00 %
                    Gearbox mounting valve 2: activation: 0.00 %
                    Vehicle voltage terminal 30: 14160 mV

Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K0 907 379 J    HW: 8K0 907 379 J
   Component: ESP8 quattro  H03 0190  
   Revision: --------    Serial number: --------------
   Coding: 1B0500
   Shop #: WSC 06325 000 00000
   VCID: 40D9402AEA8B72578A9-8014

1 Fault Found:
00526 - Brake Light Switch (F) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 2
                    Reset counter: 134
                    Mileage: 152709 km
                    Time Indication: 0
                    Date: 2019.08.15
                    Time: 11:15:43

             Freeze Frame:
                    Hex Value: 0x15C0
                    Hex Value: 0x4006
                    Hex Value: 0x1F07
                    Hex Value: 0x90B7
                    Hex Value: 0x00FF


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 289 C    HW: 8K0 907 289 C
   Component: BCM2.01       H37 0253  
   Revision: 00002001    
   Coding: 031000
   Shop #: WSC 06325 000 00000
   VCID: 392F2DCE8951239FCD7-806C

   Subsystem 1 - Part No SW: 8T0 959 754 D    HW: 8T0 959 754 D
   Component: FBSAUDIB8 IDG  H33 0049 
   Serial number: 0107000081248001    

   Subsystem 2 - Part No SW: 8K0 905 852 A    HW: 8K0 905 852 A
   Component: ELVAUDIB8  H34 0039 
   Serial number: 0207000000074012    

No fault code found.

-------------------------------------------------------------------------------
Address 06: Seat Mem. Pass (J521)       Labels:. 8T0-959-760.clb
   Part No SW: 8T0 959 760     HW: 8T0 959 760 
   Component: MEM-BFS       H08 0027  
   Revision: AA000000    Serial number: 00001001007975
   Coding: 08217025002444441000
   Shop #: WSC 06325 000 00000
   VCID: 55F7817E0509E7FFC9F-8000

No fault code found.

-------------------------------------------------------------------------------
Address 07: Control Head        Labels: 8T0-035-7xx-07-H.clb
   Part No SW: 8T0 035 730     HW: 4E0 035 729 A
   Component: Interfacebox    H43 5570  
   Revision: 00000000    Serial number: 331EG077508140
   Coding: 0025002
   Shop #: WSC 00000 000 08192
   VCID: 6E85CE928C9FB427285-803A

   Subsystem 1 - Part No: 8T0 919 609 
   Component: E0380 BedienteilH07 0100

   Subsystem 2 - Serial number: 00000000008170

   Subsystem 3 - Serial number: 0108.06.070000000100010006ÿ

   Subsystem 4 - Serial number: 010006ÿ

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: None
   Part No SW: 8T2 820 043 H    HW: 8T2 820 043 H
   Component: KLIMA 3 ZONEN H04 0093  
   Revision: D1000000    Serial number: 0114.06.070011
   Coding: 36060000
   Shop #: WSC 06325 000 00000
   VCID: 372B2BF6BF4535EF3B3-8062

1 Fault Found:
00457 - Central Electronics Control Module / BCM (J519) 
            013 - Check DTC Memory - Intermittent
             Freeze Frame:
                    Fault Status: 00101101
                    Fault Priority: 6
                    Fault Frequency: 12
                    Reset counter: 133
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:45:38


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 D    HW: 8K0 907 279 D
   Component: BCM1 1.0      H19 0253  
   Revision: 05019001    Serial number: 00000000024939
   Coding: 260050910014AF211709000300005D5D409D03C800010141000000
   Shop #: WSC 00546 210 91529
   VCID: 303910EA5A2BE2D77A9-8064

   Subsystem 1 - Part No SW: 8T2 955 119 B    HW: 8J2 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 140607  H11 0040 
   Serial number: SWFBIE 0000190      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8T0 955 559     HW: 4E0 955 559 B
   Component: RLS  H12 0001 
   Serial number: 10007807            
   Coding: 02532C

   Subsystem 3 - Part No SW: 8K0 941 531 G    HW: 8K0 941 531 G
   Component: E1 - LDS  H07 0070 
   Serial number: 00000000001106070660

2 Faults Found:
01592 - Air Quality Sensor (G238) 
            014 - Defective - Intermittent
             Freeze Frame:
                    Fault Status: 00101110
                    Fault Priority: 3
                    Fault Frequency: 12
                    Reset counter: 133
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:45:00

03207 - Charisma Switch Module 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 86
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:26:00


-------------------------------------------------------------------------------
Address 0E: Media Player 1        Labels: 4E0-910-111.lbl
   Part No SW: 8T2 035 110 C    HW: 8T2 035 110 A
   Component: MP3-Changer     H42 0390  
   Revision: 00042001    Serial number: AUZ5ZBG4511183
   Shop #: WSC 00000 000 00000
   VCID: 2B0307867F0D810F4FB-807E

No fault code found.

-------------------------------------------------------------------------------
Address 0F: Digital Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:. 8K0-919-475.clb
   Part No SW: 8K0 919 475     HW: 8K0 919 475 
   Component: PARKHILFE 4K  H06 0003  
   Revision: 11001001    Serial number: 46130716301923
   Coding: 100001
   Shop #: WSC 06325 123 12345
   VCID: 76B5E6F2F8CF8CE7E05-8022

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 8K0-959-655.clb
   Part No SW: 8K0 959 655     HW: 8K0 959 655 
   Component: AirbagVW-AU10 H21 0334  
   Serial number: 0038GD082S80  
   Coding: 30323232333030303030554A305238543053
   ASAM Dataset: EV_AirbaECUVWAUDI010 A02001
   ROD: EV_AirbaECUVWAUDI010_A02.rod
   VCID: 7AADF2C2CC57E88784D-802E

   Crash sensor for side airbag: driver side: 
   Serial number: 6334LSME1A251070+

   Crash sensor for side airbag: front passenger side: 
   Serial number: 6344LSME1A3027321

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 6352QSME2F5330117

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 6362QSME2F5C3303L

   Crash sensor for front airbag: driver side: 
   Serial number: 63734SME2E0C3111Z

   Crash sensor for front airbag: front passenger side: 
   Serial number: 63834SME2C62780FB

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8K0 953 568 B    HW: 8K0 953 568 B
   Component: Lenks.Modul   H09 0011  
   Revision: --------    Serial number: 90304GF70000Z 
   Coding: 000016
   Shop #: WSC 06325 000 00000
   VCID: 392F2DCE8951239FCD7-806C

   Component: E221 - MFL  H02 0003 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels: None
   Part No SW: 8T0 920 980 M    HW: 8T0 920 980 M
   Component: KOMBIINSTR.   H20 0136  
   Revision: 00300000    Serial number: 6C1205M67     
   Coding: 2F05010002002600010000
   Shop #: WSC 06325 000 00000
   VCID: 45D7513EF5A9577FB9F-8010

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8T0 907 468 F    HW: 8T0 907 468 F
   Component: GW-BEM 4CAN-M H07 0084  
   Revision: EB002032    Serial number: 3200E076088034
   Coding: 000003
   Shop #: WSC 00762 210 57650
   VCID: 44D14C3AFE936E77AE1-8010

   Subsystem 1 - Part No SW: 8K0 915 181     HW: 8K0 915 181 
   Component: J367-BDM  H06 0150 
   Serial number: 1700178A100507      

1 Fault Found:
02230 - Digital Radio (DAB) (R147) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 86
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:27:51


-------------------------------------------------------------------------------
Address 1E: Media Player 2 (R199)       Labels:. 4E0-035-785.lbl
   Part No SW: 4E0 035 785 F    HW: 4E0 035 785 B
   Component: SG ext.Player H15 0850  
   Revision: 00000000    
   Coding: 010000
   Shop #: WSC 00000 000 00000
   VCID: 2B030786730D810F4FB-807E

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels:. 8T0-959-760.clb
   Part No SW: 8T0 959 760     HW: 8T0 959 760 
   Component: MEM-FS        H08 0027  
   Revision: AA000000    Serial number: 00001001004049
   Coding: 08217125002444441000
   Shop #: WSC 06325 123 12345
   VCID: 55F7817E0509E7FFC9F-8000

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 4E0-910-88x-37.lbl
   Part No SW: 4E0 910 888 P    HW: 4E0 919 887 M
   Component: MNS ECE         H49 1060  
   Revision: 00000000    Serial number: 333FT077511984
   Shop #: WSC 00762 210 57650
   VCID: 3B2337C68F6D118FDFB-806E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8K0 959 793 A    HW: 8K0 959 793 A
   Component: TSG FA        H08 0149  
   Revision:             Serial number: 0VQP
   Coding: 0110022240012201
   Shop #: WSC 06325 123 12345
   VCID: 3E253ED2907F04A7F85-806A

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 289 C    HW: 8K0 907 289 C
   Component: BCM2.01       H37 0253  
   Revision: 00002001    Serial number: 0104871599    
   Coding: 011B068200390440002000
   Shop #: WSC 06325 000 00000
   VCID: 392F2DCE8951239FCD7-806C

   Subsystem 1 - Part No: 8K0 951 177 
   Component: DWA-Sensor  H02 0030 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H03 1301 

3 Faults Found:
02615 - Fuel Tank Cap; Lock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 86
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:30:20

02616 - Fuel Tank Cap; Unlock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 86
                    Mileage: 152416 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:35:32

00526 - Brake Light Switch (F) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 129
                    Reset counter: 134
                    Mileage: 152417 km
                    Time Indication: 0
                    Date: 2019.08.12
                    Time: 17:46:35


-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-ASM.clb
   Part No SW: 8T0 035 223 P    HW: 8T0 035 223 A
   Component: DSP STD       H07 0250  
   Revision: 22S00000    
   Coding: 010101
   Shop #: WSC 06325 000 00000
   VCID: 3B2337C6836D118FDFB-806E

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8K0 959 792 A    HW: 8K0 959 792 A
   Component: TSG BF        H08 0149  
   Revision:             Serial number: 0HSP
   Coding: 011002224C012201
   Shop #: WSC 00546 210 91529
   VCID: 3D2739DE9D791FBFE1F-8068

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
   Part No SW: 8K0 907 801 C    HW: 8K0 907 801 C
   Component: EPB Audi B8   H03 0030  
   Revision: 00000003    Serial number: 00000000009369
   Shop #: WSC 00000 000 00000
   VCID: 2F3B13964715FD2F633-807A

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 8K0-907-357.clb
   Part No: 8K0 907 357 
   Component: Dynamische LWR  H01 0010  
   Revision: 00000001    Serial number:               
   Coding: 0000002
   Shop #: WSC 06325 000 00000
   VCID: 72BDDAE298A790C7CCD-8026

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 4E0-910-541.lbl
   Part No SW: 4E0 910 541 T    HW: 4F0 035 541 L
   Component: TUNER EU/US/RDW H42 0630  
   Revision: 00000000    Serial number: 336FS077510297
   Coding: 0000001
   Shop #: WSC 06325 000 00000
   VCID: 313F15EE5D21EBDF757-8064

No fault code found.

-------------------------------------------------------------------------------
Address 57: TV Tuner        Labels: None
   Part No SW: 4E0 910 148 E    HW: 4E0 919 148 
   Component: R0078 TVhybridT     0470  
   Revision: R0H06000    Serial number: 76300800482201
   Coding: 0000203
   Shop #: WSC 06325 000 00000
   VCID: 2517F1BE19E9B77F99F-8070

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 4F1-910-336.lbl
   Part No SW: 4F1 910 336 D    HW: 4F1 862 335 
   Component: BTA             H09 1120  
   Revision: 00H09000    Serial number: 00000007535628
   Coding: 0010021
   Shop #: WSC 06325 000 00000
   VCID: 2517F1BE19E9B77F99F-8070

No fault code found.

End----------(Elapsed Time: 01:51, VBatt start/end: 14.3V/14.4V)-----------
 
   #2  

Uwe

Benevolent Dictator
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Waxing pedantic: This is a 2008 model, not 2007. In fact, I don't think a 2007 model A5 exists. I'll fix the thread title.

Have you verified all the wiring related to the brake switch?

-Uwe-
 
   #3  

Ej2_sir

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Thanks for the reply. Appologies, the date on the v5 is first reg 15/10/17 and its a 57 plate so just assumed it was an 07.
With regards to diagnosis as far as ive got is to confirm the lights work. I also looked at the control module (engine?) And checked that the ecu signal and switch signal were active on pressing the pedal (they were but iirc the ecu lagged slightly behind the switch?) Could you give a brief indication of what to check across tje 4 pins and ill check and report back.
Really appreciate the help!
 
   #4  

PetrolDave

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IIRC the switch has two parts - normally open and normally closed when the pedal isn't pressed. The ECU looks for these two parts to always be "opposites".
 
Last edited:
   #5  

Jack@European_Parts

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Waxing pedantic: This is a 2008 model, not 2007. In fact, I don't think a 2007 model A5 exists. I'll fix the thread title.

Have you verified all the wiring related to the brake switch?

-Uwe-

Vehicle Identification No.WAUZZZ8T88A005904
ModelAudi A5 Coupe
Quattro TDI 3.0
A5CO
Date of production05.07.2007
Model year2008
Sales type8T30H9
Engine CodeCAPA
Transmission CodeKMU


Indeed............ https://www.youtube.com/watch?v=OpbdGnJbneE


OP JPPSG

https://forums.ross-tech.com/showth...essional-Problem-Solver-Guide-quot-JPPSG-quot

RTFB


http://wiki.ross-tech.com/wiki/index.php/Official_Factory_Repair_Information



Did you verify fuses first & ground points + all connections, then switch tracks from end to end isolated with load light & if good change switch, if fault persists chance modules intercepting signal?

 
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