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Thread: 2006/2007 Audi A4 Avant B7, parking assist no longer works

  1. #1
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    2006/2007 Audi A4 Avant B7, parking assist no longer works

    Hi,

    About 6 months ago my radio gradually stopped working.

    I eventually found out that the washer fluid hose between trunk and roof liner had broken and washer fluid had poured down the trunk inside and on the right hand side of the car.
    With time the fluid has caused the connector(s) to the BOSE amplifier in the back to corrode, short and break. I replaced the BOSE amp with an identical unit and the stereo now worked again.

    Around the same time I also became aware my parking aid no longer worked: when engaging the reverse a sound/tone would go off from the front of the car (front buzzer) but then no further tones were given when parking between cars (so no front or rear audible signals).

    I first attributed this to a clutch/flywheel install around the same time thinking they had forgotten to connect the reverse switch. However reverse lights work and I do get that one tone when engaging the reverse gear.

    So I now think it's to do with that washer fluid leakage.

    Here's what I have done to troubleshoot:

    1. I've put my head against all front sensors (sound of them being active)
    2. I've put my head against all rear sensors (again, sound of them being active)
    3. I've scanned the car getting (once) a 01543 code, but I've not reproduced it on repeat scans.


    Is there anything I can do using VCDS to find the error? Otherwise I think I will have to remove the rear bumper and inspect...


    Thanks for looking!


    I would be surprised if it was the buzzer (01543) since its on the left hand side in the trunk and was not affected by washer fluid leaking.


    Autoscan (does not show 01543):

    Code:
    Tuesday,13,August,2019,10:53:36:15041
    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: WUAZZZ8E47A801426   License Plate: 
    
    
    Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
              67 69 75 76 77
     
    VIN: WUAZZZ8E47A801426   Mileage: 123190km-76546miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels:. 06F-907-115-AXX.clb
       Part No SW: 8E0 910 115 N    HW: 8E0 907 115 D
       Component: 2.0l R4/4V TFSI     0070  
       Revision: 5EH13---    Serial number:               
       Coding: 010C0003180F0120
       Shop #: WSC 40970 222 87061
       VCID: 2C0104EECA089B77461-8078
    
    No fault code found.
    Readiness: 0000 0000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 8E0-910-517.clb
       Part No SW: 8E0 910 517 J    HW: 8E0 614 517 BH
       Component: ESP8 quattro    H06 0140  
       Revision: 00000000    Serial number: 00000000000000
       Coding: 0004526
       Shop #: WSC 06335 000 00000
       VCID: 2E050EE6FC14E967685-807A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels: 8E0-907-279-8EC.lbl
       Part No: 8E0 907 279 N
       Component: int. Lastmodul  ECE 0907  
       Coding: 11141
       Shop #: WSC 65536  
       VCID: 3D2739AA246202FFE1F-4AA4
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 8E0-959-655-94.lbl
       Part No SW: 8E0 959 655 G    HW: 8E0 959 655 G
       Component:    Airbag 9.41  H12 3730  
       Revision: 91H12373    Serial number: 0036M0G2T14/  
       Coding: 0031612
       Shop #: WSC 06335 000 00000
       VCID: 3B2337B23F660CCFDFB-806E
    
       Subsystem 1 - Serial number: 6332DRB403ABC8AF9
    
       Subsystem 2 - Serial number: 6342DRB40392CC24S
    
       Subsystem 3 - Serial number: 6352ARB401773B15H
    
       Subsystem 4 - Serial number: 6362ARB40179CF55.
    
       Subsystem 5 - Serial number: 63729RB4017DDE12Y
    
       Subsystem 6 - Serial number: 63829RB4017DDE6B6
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 8E0-953-549.lbl
       Part No: 8E0 953 549 Q
       Component: Lenksáulenmodul     0701  
       Coding: 04042
       Shop #: WSC 00000  
       VCID: 41DF455A589A661F857-4AA4
    
    1 Fault Found:
    01304 - Radio 
                49-00 - No Communications
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8E0-920-9xx-8EC.lbl
       Part No SW: 8E0 920 901 J    HW: 8E0 920 901 J
       Component: KOMBI+WFS 4     H14 0200  
       Revision: 0200        Serial number: 00000000000000
       Coding: 0007111
       Shop #: WSC 80093 222 69422
       VCID: 2C0104EECA189B77461-50F4
    
    1 Fault Found:
    01304 - Radio 
                004 - No Signal/Communication
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 8E0-920-9xx-8EC.lbl
       Part No SW: 8E0 920 901 J    HW: 8E0 920 901 J
       Component: KOMBI+WFS 4     H14 0200  
       Revision: 0200        Serial number: 00000000000000
       Coding: 0007111
       Shop #: WSC 80093 222 69422
       VCID: 2C0104EECA189B77461-50F4
    
    1 Fault Found:
    01304 - Radio 
                004 - No Signal/Communication
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor        Labels: 8E0-951-177.lbl
       Part No: 8E0 951 177 
       Component: Innenraumueberw.   0804  
       Coding: 00001
       Shop #: WSC 40970  
       VCID: 6B83C7F20A965C4F0FB-508A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels:. 8E0-959-433-MIN.clb
       Part No: 8E0 959 433 CJ
       Component: Komfortgerát TBF    4035  
       Coding: 07018
       Shop #: WSC 06335  
       VCID: 7BA3F7B27AF6CCCF9FB-4AA4
    
       Subsystem 1 - Part No: 8E1959801H
       Component: Tőrsteuer.FS BRM 0606  
    
       Subsystem 2 - Part No: 8E1959802H
       Component: Tőrsteuer.BF BRM 0606  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 8P0-907-357.lbl
       Part No: 8P0 907 357 F
       Component: Dynamische LWR  H02 0010  
       Revision: 00000001    Serial number:               
       Coding: 0000005
       Shop #: WSC 06335 000 00000
       VCID: 3D2739AA217202FFE1F-8068
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone        Labels: 8P0-862-335.lbl
       Part No SW: 8P0 862 335 H    HW: 8P0 862 335 H
       Component: FSE_255x BT     H25 0290  
       Revision: 00000000    Serial number: 00000005007651
       Coding: 0001692
       Shop #: WSC 06335 000 00000
       VCID: 3B2337B23F760CCFDFB-50D0
    
    1 Fault Found:
    01304 - Radio 
                004 - No Signal/Communication
                 Freeze Frame:
                        Fault Status: 01100100
                        Fault Priority: 5
                        Fault Frequency: 1
                        Reset counter: 176
                        Time Indication: 15
    
    
    End----------(Elapsed Time: 05:09, VBatt start/end: 12.0V/12.1V)-----------
    Last edited by AudiB720TS; 08-14-2019 at 12:04 AM. Reason: Attaching autoscan

  2. #2
    Ross-Tech Employee Jef's Avatar
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    https://forums.ross-tech.com/showthr...t-an-Auto-Scan

    You need to post a full Auto-Scan so everyone can see just what we are trying to help with.
    Jef
    Ross Tech Support Team, Alpha Squad
    Auto-Scan, learn it, love it, live it... then check the fuses.

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  4. #3
    Verified VCDS User Keithuk's Avatar
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    As Jef says You need to post a full Auto-Scan.

    Nothing found in Ross Tech Wiki search.

    VAG Error Code: 01543

    Fault Location:
    Parking Aid Warning Buzzer/Chime (H15) - Open Circuit/Short Circuit to Earth/Positive/Lower Limit Exceeded

    Possible Cause:
    No warning given when reversing.

    Fuse(s).
    Wiring/Connector(s).
    Open circuit or short circuit to earth/positive between Parking Aid Warning Buzzer (H15).
    Parking Aid Warning Buzzer (H15) defective.

    Possible Solutions:
    Check/Replace Fuse(s).
    Check wiring to/from Parking Aid Warning Buzzer (H15).
    Fault finding according to current flow diagram.
    Replace Parking Aid Warning Buzzer (H15).

    As taken from my new VAG Fault Codes app.
    New User Keith

    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Flat Tyre Indicator, Basic Protection Pack + VCDS.

  5. #4
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    I have now added the most recent auto-scan to the original post.

    Thanks again,
    J

  6. #5
    Benevolent Dictator Uwe's Avatar
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    Auto-Scan doesn't show a Park Assist module. In this car, I believe it should be at address 76. Locate that module in the car. Check power, ground, CAN and K-Line connections to it per wiring diagrams.

    -Uwe-
    Lock-down of sick people: Quarantine
    Lock-down of healthy people: Tyranny

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  8. #6
    NostraJackAss Jack@European_Parts's Avatar
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    FUSE/Water ingress?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

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  10. #7
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    Well, this is a bit embarrassing really...

    So my kid fell asleep in the car today and I used the opportunity to pull the panels in the rear.
    Turns out the connector to the rear buzzer was DISCONNECTED! Must have gotten pulled out with a panel back when I was trying to scope the size of that washer fluid spill some six months ago.
    I connected the wire again and parking aid now works like a charm

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  12. #8
    NostraJackAss Jack@European_Parts's Avatar
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    Nice

    Induced FOD wins again!




    This is why retracing work steps is so important & when new problems arise during a repair or why recent service history should always be observed!
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

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