2010 Audi A6 quattro brakes wont work properly!! Please help!

   #1  

Cobie90

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Hey ross tech fam i have a braking problem that my car does not stop at all. I change the brakes about a month ago and i felt it not working properly so i bled the system. Still wasnt working right so i thought the master cylinder was the problem so i change the master cylinder bled it before hooking up abs lines and once i had everything connected i bled the system once again.

My car still is not stopping and not getting hard at all even when the car is off. So i thought the be beake booster was the problem so i change that today but yet the brake pedal still goes to the floor after bleeding the brakes.(Its like im not getting any vacuum to stop the brakes before i changed everything my car was stopping a little bit.

Im at a stand still being that i dont know any other reason the brakes will be like that after changing all those parts. Any information about this would be very helpful because im not able to drive my car because it doesn't stop... No codes are present thats the only reason why i didnt post them.

Thanks
 
   #2  

Larry Manton

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Hey ross tech fam i have a braking problem that my car does not stop at all. I change the brakes about a month ago and i felt it not working properly so i bled the system. Still wasnt working right so i thought the master cylinder was the problem so i change the master cylinder bled it before hooking up abs lines and once i had everything connected i bled the system once again.

My car still is not stopping and not getting hard at all even when the car is off. So i thought the be beake booster was the problem so i change that today but yet the brake pedal still goes to the floor after bleeding the brakes.(Its like im not getting any vacuum to stop the brakes before i changed everything my car was stopping a little bit.

Im at a stand still being that i dont know any other reason the brakes will be like that after changing all those parts. Any information about this would be very helpful because im not able to drive my car because it doesn't stop... No codes are present thats the only reason why i didnt post them.

Thanks
Long history of brakes on this, going back to 2020. I don't know this car but how is the brake booster powered?, vacuum, remote pump, just asking?

You stated does not make any pressure off so makes (inferred some) when running. I'm not an expert on ABS but appears ABS is bypassing pressure at most times, could be wrong, just talking out loud. I noted ABS codes in the past, would still like to see the latest scan. This car has had major brake work done, and in my history and I have some and made plenty of mistakes,. lots of brake work, and no brakes, maybe a correlation here, just trying to be helpful.

Larimore
 
   #3  

Uwe

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Please post an Auto-Scan for context.

I'm going to suggest you look at the brake pressure reading in your ABS module, but without a scan showing what ABS module this car has, I can't tell you where that would be.

-Uwe-
 

Cobie90

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Long history of brakes on this, going back to 2020. I don't know this car but how is the brake booster powered?, vacuum, remote pump, just asking?

You stated does not make any pressure off so makes (inferred some) when running. I'm not an expert on ABS but appears ABS is bypassing pressure at most times, could be wrong, just talking out loud. I noted ABS codes in the past, would still like to see the latest scan. This car has had major brake work done, and in my history and I have some and made plenty of mistakes,. lots of brake work, and no brakes, maybe a correlation here, just trying to be helpful.

Larimore
Hey it have a vaccum pump and yes i changed everything from the master cylinder to the brake booster and brand new pads and still cant stop my car im wondering of the abs module itself have air in it. If so is there a way to use vcds to do the abs bleed?
 

Cobie90

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Please post an Auto-Scan for context.

I'm going to suggest you look at the brake pressure reading in your ABS module, but without a scan showing what ABS module this car has, I can't tell you where that would be.

-Uwe-
My brake pressure is reading -30 when i dont press the brakes and when i do press it the pressure get to sbout 78 and starting dropping.
 

Uwe

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-30 what? What are the units?

Negative brake pressure is obviously implausible. Bad sensor?

-Uwe-
 

TFSI

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-30 what? What are the units?

Negative brake pressure is obviously implausible. Bad sensor?

-Uwe-
Well even if bad sensor, at least there should be some braking power, all things equal. This is an AUDI we are talking about. Have you checked the ABS brake pipe lines that somebody might have not interchanged lines connection point?For eg. the HL and HR swapped? Having said that, please post autoscan so we have a clear idea about complete car systems.
 

Cobie90

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Well even if bad sensor, at least there should be some braking power, all things equal. This is an AUDI we are talking about. Have you checked the ABS brake pipe lines that somebody might have not interchanged lines connection point?For eg. the HL and HR swapped? Having said that, please post autoscan so we have a clear idea about complete car systems.

Code:
Thursday,22,September,2022,13:33:22:05661
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.9.0.0 (x64)  HEX-V2 CB: 0.4623.4
Data version: 20220830 DS341.0
www.Ross-Tech.com


VIN:    License Plate: 
Mileage: 239780km-148992mi   Repair Order: 



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


Chassis Type: FB-AU56 (4F0)
Scan: 01 02 03 05 08 09 0E 15 16 17 19 36 42 46 47 4C 4F 52 53 55
          56 5F 62 6C 72

   Mileage: 239780km-148992miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
0E-Media Player 1 -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
4C-Tire Pressure II -- Status: Cannot be reached 1100
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: Cannot be reached 1100
56-Radio -- Status: Malfunction 0010
5F-Information Electr. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CCA)       Labels:. 06E-907-551-CAJ.clb
   Part No SW: 4F1 910 551 D    HW: 4F1 907 551 
   Component: 3.0l V6 TFSI        0050  
   Revision: --H06---    Serial number:               
   Coding: 0105000A190F0120
   Shop #: WSC 08175 444 103843
   VCID: 2412E4F0D2DA9EFBA3B-8070
   VINID: 9D195B5D15921D17800C614114B21EF9A6

2 Faults Found:
001048 - Relay for Secondary Air Injection Pump (J299) 
               P0418 - 000 - Malfunction - MIL ON
             Freeze Frame:
                    Fault Status: 11100100
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.21
                    Time: 19:30:25

             Freeze Frame:
                    RPM: 640 /min
                    Mass Air / Rev.: 397.9 mg/str
                    Temperature: 31.5°C
                    Bin. Bits: 00000001
                    Voltage: 10.51 V
                    Lambda: -1.5 %

053271 - Please Check Fault Codes in Control Module for ABS Brakes 
               U1017 - 000 - 
             Freeze Frame:
                    Fault Status: 01101000
                    Fault Priority: 1
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.22
                    Time: 12:43:06

             Freeze Frame:
                    RPM: 800 /min
                    Mass Air / Rev.: 190.8 mg/str
                    Temperature: 31.5°C
                    Bin. Bits: 00000010
                    Load: 22.7 %
                    Speed: 0.0 km/h

Readiness: 1110 1101

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09L-927-760.lbl
   Part No SW: 4F9 910 156 A    HW: 09L 927 156 C
   Component: AG6 09L 3,0TFSI USA 0010  
   Revision: --H04---    Serial number:        4539555
   Coding: 0000002
   Shop #: WSC 02325 785 00200
   VCID: 2A0E0AC8B0FE488B997-807E

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 4F0-910-517.clb
   Part No SW: 4F0 910 517 AL    HW: 4F0 614 517 BA
   Component: ESP8 quattro    H03 0060  
   Revision: 00000000    Serial number: 00000000000000
   Coding: 0020921
   Shop #: WSC 02325 785 00200
   VCID: 6E86C6D84C9664AB05F-803A

1 Fault Found:
00778 - Steering Angle Sensor (G85) 
            014 - Defective
             Freeze Frame:
                    Fault Status: 01101110
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 184
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.22
                    Time: 12:43:05

             Freeze Frame:
                    Hex Value: 0x0000
                    Hex Value: 0x4082
                    Hex Value: 0x001E
                    Hex Value: 0x369C
                    Hex Value: 0x00FF


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels:. 4F0-910-852.clb
   Part No SW: 4F0 910 852 B    HW: 4F0 905 852 E
   Component: FBSAUDIC6 ELV   H05 0100  
   Revision: 00H05000    Serial number: 10602501421794
   Coding: 0000007
   Shop #: WSC 02324 785 00200
   VCID: 2514F9F4D9E067F3B45-8070

   Subsystem 1 - Part No: 4F0 910 132 L
   Component: FBSAUDIC6 EZS   H03 0020

   Subsystem 2 - Part No: 4F0 910 335 B
   Component: FBSAUDIC6 KSG   H03 0020

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4F0-910-043.clb
   Part No SW: 4F0 910 043 B    HW: 4F1 820 043 AL
   Component: KLIMABETAETIGUNGH30 0080  
   Revision: 00000076    Serial number: 00000030563599
   Coding: 0524326
   Shop #: WSC 02335 785 00200
   VCID: 1D64D114F1B0AF33EC5-8048

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 4F0-910-279.lbl
   Part No SW: 4F0 910 279 Q    HW: 4F0 907 279 A
   Component: ILM Fahrer      H24 0340  
   Revision: 00000000    Serial number: 4F0907279     
   Coding: 0139123
   Shop #: WSC 02335 785 00200
   VCID: 372823BC734CE563169-8062

   Subsystem 1 - Part No: 4F1 910 113 D  Labels: 1KX-955-119.CLB
   Component: Wischer AudiC6  H10 0040  
   Coding: 00056595
   Shop #: WSC 02335  

   Subsystem 2 - Part No: 8K0 910 557   Labels: 8K0-955-559.CLB
   Component: REGENLICHTSENSORH04 0003  
   Coding: 00146221
   Shop #: WSC 02335  

2 Faults Found:
01494 - Bulb for Parking Lamps; Left (M1) 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01111011
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 184
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:00

01498 - Bulb for Parking Lamps; Right (M3) 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01111011
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 184
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:00


-------------------------------------------------------------------------------
Address 0E: Media Player 1 (R41)       Labels: 4E0-910-111.lbl
   Part No SW: 4F0 035 110 A    HW: 4F0 035 110 
   Component: CDC-MP3-Alp   H44 0140  
   Revision: AA001001    
   VCID: 1574C9340580F773245-8040

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 4F0-910-655-10.clb
   Part No SW: 4F0 910 655 R    HW: 4F0 959 655 H
   Component: Airbag AU1042 H06 0160  
   Revision: --------    Serial number: 003FA0012RDS
   Coding: 303142373034303030314A55304C34463053
   Shop #: WSC 02324 785 00200
   ASAM Dataset: EV_Airba10AURB4 001001
   ROD: EV_Airba10AURB4.rod
   VCID: 36362EB878C61C6B0DF-8062

   Seat occupied recognition: 
   Subsystem 1 - Part No SW: 4F0 910 339 B    HW: 4F0 959 339 B
   Component: BF-Gewichtss.  H03 0060 
   Serial number: 5810000R0000003W4J
   Coding: 000000

   Crash sensor for side airbag: driver side: 
   Serial number: 3574SRB400009FDD0ABV

   Front Passenger's Side Airbag Crash Sensor: 
   Serial number: 3584SRB400009F94E27L

   Rear Side Airbag Crash Sensor (on driver's side): 
   Serial number: 3516HRB402VC0AS50SV6

   Passenger side rear thorax airbag crash sensor: 
   Serial number: 3526HRB402VC0AS4OKNE

   Crash sensor for front airbag: driver side: 
   Serial number: 3554NRB40000517EBB79

   Crash sensor for front airbag: front passenger side: 
   Serial number: 3564NRB4000051197E1Z

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 4F0-910-549.lbl
   Part No SW: 4F0 910 549 A    HW: 4F0 953 549 D
   Component: J0527               0530  
   Revision: 00H05000    Serial number: 90026092900003
   Coding: 0012141
   Shop #: WSC 02324 785 00200
   VCID: 2708F3FCA3EC75E3869-8072

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: E0221           H02 0030

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 4F0-920-xxx-17.clb
   Part No SW: 4F0 920 983 H    HW: 4F0 920 983 H
   Component: KOMBIINSTR.   H08 0144  
   Revision: 00000000    Serial number: CN450YEA9     
   Coding: 8BD60A050B00CF05020201
   Shop #: WSC 02391 823 56573
   VCID: 313C1DA491283B5358D-8064

2 Faults Found:
01771 - Control Module for Headlight Range (J431) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:28

01325 - Control Module for Tire Pressure Monitoring (J502) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:32


-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 4F0-907-468.clb
   Part No SW: 4F0 907 468 M    HW: 4F0 907 468 F
   Component: GW-BEM 4CAN-M H06 0035  
   Revision: LB100029    Serial number: 2900L09A1700BA
   Coding: 000303
   Shop #: WSC 02391 823 56573
   VCID: 392C25844958F313E0D-806C

   Subsystem 1 - Part No SW: 8X0 915 181     HW: 8X0 915 181 
   Component: J367-BDM  H07 0141 
   Serial number: 00000000005650459629

4 Faults Found:
01771 - Control Module for Headlight Range (J431) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:33

             Freeze Frame:
                    Bin. Bits:    10111
                    Voltage: 11.20 V
                    Count: 7
                    Bin. Bits:    10011
                    Time: 25.40 s

03109 - Tire Pressure Monitoring Control Module 2 (J793) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:37

             Freeze Frame:
                    Bin. Bits:    10111
                    Voltage: 11.20 V
                    Count: 7
                    Bin. Bits:    10011
                    Time: 25.40 s

03041 - Energy Management Active 
            000 - - - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 7
                    Fault Frequency: 2
                    Reset counter: 224
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.21
                    Time: 19:35:10

             Freeze Frame:
                    Bin. Bits:    10111
                    Voltage: 11.20 V
                    Count: 7

02256 - Quiescent Current 
            001 - Upper Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100001
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 224
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.21
                    Time: 23:31:00


-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels: None
   Part No SW: 4F0 959 760 C    HW: 4F0 959 760 C
   Component: MEM-FS        H08 0062  
   Revision: AA000000    Serial number: 00001010017085
   Coding: 00581B00004011110000
   Shop #: WSC 02391 823 56573
   VCID: 313C1DA491283B5358D-8064

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 4F0-959-793.clb
   Part No SW: 4F0 959 793 R    HW: 8K0 959 793 D
   Component: TSG FA        H11 0250  
   Revision:             Serial number: 0000102168472 
   Coding: 011F57204E40410001
   Shop #: WSC 02391 823 56573
   VCID: 46D65E7808A68CEB9DF-8012

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 4F0-910-289.lbl
   Part No SW: 4F0 910 289 N    HW: 4F0 907 289 N
   Component: Komfortgeraet   H29 0250  
   Revision: 02500029    Serial number: 01229654010000
   Coding: 4618269
   Shop #: WSC 02335 785 00200
   VCID: 353429B469401773045-8060

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

2 Faults Found:
01134 - Alarm Horn (H12) 
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 01101100
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 184
                    Mileage: 208933 km
                    Time Indication: 0
                    Date: 2020.06.29
                    Time: 14:18:38

02743 - Bulb for Brake/Turn Signal Light; Right 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 99
                    Mileage: 238788 km
                    Time Indication: 0
                    Date: 2022.07.25
                    Time: 12:51:49


-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels: Redir Fail!
   Part No SW: 4F0 035 223 P    HW: 4F0 035 223 P
   Component: BOSE G3 C6    H01 0100  
   Revision: AG001300    Serial number: 00000000041814
   Coding: 05000000
   Shop #: WSC 02391 823 56573
   VCID: 290CF5C4B9F8439390D-807C

No fault code found.

-------------------------------------------------------------------------------
Address 4C: Tire Pressure II
Cannot be reached

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II        Labels: 4F0-910-280.lbl
   Part No SW: 4F0 910 280     HW: 4F0 907 280 C
   Component: ILM Beifahrer   H13 0100  
   Revision:             Serial number: 00000000509539
   Coding: 0002014
   Shop #: WSC 02324 785 00200
   VCID: 5EE69618BC36F42BB5F-800A

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 4F0-959-792.clb
   Part No SW: 4F0 959 792 R    HW: 8K0 959 792 D
   Component: TSG BF        H11 0250  
   Revision:             Serial number: 0000102131826 
   Coding: 011F57204E40410001
   Shop #: WSC 02391 823 56573
   VCID: 45D4597435A087F3945-8010

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 4F0-910-801.clb
   Part No SW: 4F0 910 801 D    HW: 4F0 907 801 B
   Component: EPB  CEFC0090   H05 0090  
   Revision: --H05---    
   Coding: 0000222
   Shop #: WSC 02145 785 00200
   VCID: 211CEDE4CDC88BD3C8D-8074

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range
Cannot be reached

-------------------------------------------------------------------------------
Address 56: Radio (R)       Labels:. 4F0-035-0xx-56.clb
   Part No SW: 4F0 035 082 A    HW: 4F0 035 082 
   Component: Radio U SIRIU H45 0021  
   Revision: AB001007    Serial number: 335J-097535137
   Coding: 020000010000000000
   Shop #: WSC 02391 823 56573
   VCID: 1D64D114FDB0AF33EC5-8048

1 Fault Found:
02788 - Internal Communications Error 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:57:10

             Freeze Frame:
                    Bin. Bits: 00000001


-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:. 4E0-035-6xx-5F.clb
   Part No SW: 4E0 035 664 A    HW: 4E0 035 664 A
   Component: H-BN-NA       H45 0042  
   Revision: --------    Serial number: 488J/097520192
   Coding: 010200000002E1FE41000304EF6300030000
   Shop #: WSC 02391 823 56573
   VCID: 221EE2E8C4CE90CBD17-8076

   Subsystem 1 - Part No: 8R0 060 884 F
   Component: NAR 2009/2010  5304 

   Subsystem 2 - Part No SW: 4F0 919 604     HW: 4F0 919 604 
   Component: DU7 High  H43 0306 
   Serial number: 9356JX091091752     

   Subsystem 3 - Part No SW: 4F0 910 609 E    HW: 4F1 919 611 T
   Component: Bedienteil MM  H01 0060 
   Serial number: 00000001422512      

   Subsystem 4 - Part No: 8R0 906 961 A
   Component: CD-Database  1293 

1 Fault Found:
03157 - Functionality limited due to Communications Disruption 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 183
                    Mileage: 239784 km
                    Time Indication: 0
                    Date: 2022.09.17
                    Time: 17:56:56

             Freeze Frame:
                    Bin. Bits: 00000000 10000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 4F0-959-795.clb
   Part No SW: 4F0 959 795 M    HW: 8K0 959 795 B
   Component: TSG HL        H10 0251  
   Revision:             Serial number: 0000009496373 
   Coding: 010E57204040220001
   Shop #: WSC 02391 823 56573
   VCID: 43D0476C3B94B9C3BA1-8016

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 4L0-910-441.clb
   Part No SW: 4F0 910 441 D    HW: 4L0 907 441 B
   Component: J772__Rearview      0030  
   Revision: --H03---    Serial number: 525PA8-J9925BW
   Coding: 1000304
   Shop #: WSC 02145 785 00200
   VCID: 211CEDE4CDC88BD3C8D-8074

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 4F0-959-795.clb
   Part No SW: 4F0 959 795 M    HW: 8K0 959 795 B
   Component: TSG HR        H10 0251  
   Revision:             Serial number: 0000009496374 
   Coding: 010E57204040220001
   Shop #: WSC 02391 823 56573
   VCID: 43D0476C3B94B9C3BA1-8016

No fault code found.

End----(Elapsed Time: 01:47, VBatt start/end: 11.6V/11.5V. VIgn 11.5V)-----
 
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Cobie90

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Thursday,22,September,2022,14:00:43:05661
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 22.9.0.0 (x64) HEX-V2 CB: 0.4623.4
Data version: 20220830 DS341.0
www.Ross-Tech.com

License Plate:



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Address 03: ABS Brakes (4F0 910 517 AL)

13:59:57
-0.33 bar Brake Pressure

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Address 03: ABS Brakes (4F0 910 517 AL)

14:00:52
34.83 bar Brake Pressure

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Address 03: ABS Brakes (4F0 910 517 AL)

14:00:59
31.57 bar Brake Pressure
 

Cobie90

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-30 what? What are the units?

Negative brake pressure is obviously implausible. Bad sensor?

-Uwe-
Where is the sensor located and can i test it using vcds?
 

Cobie90

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I think its inside the ABS hydraulic block?
Ok thanks, i manage to get my system back working i had to get the air out the abs module by using vcds special function in basic settings group 010. Ill bleeed the whole system tomorrow.
 

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-0.33 bar Brake Pressure
-0.33 is not as wildly out-of-spec as the "-30" you mentioned before. ;)

Where is the sensor located and can i test it using vcds?
I think the only "test" you can do is to observe the pressure readings in the ABS module.

I think its inside the ABS hydraulic block?
I believe that's correct, but am not 100% certain myself.

i had to get the air out the abs module by using vcds special function in basic settings group 010.
Interesting, because I don't see that documented in the label file. Paging @DrPeter or @Dana ...?

-Uwe-
 

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-0.33 is not as wildly out-of-spec as the "-30" you mentioned before. ;)


I think the only "test" you can do is to observe the pressure readings in the ABS module.


I believe that's correct, but am not 100% certain myself.


Interesting, because I don't see that documented in the label file. Paging @DrPeter or @Dana ...?

-Uwe-i dont know either but it definitely stop my brakes from ainking to the floor they are now hard again and i can stop on the dime but it only did the front left and front right the test didnt tell me to do the rear brakes.
 

Cobie90

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-0.33 is not as wildly out-of-spec as the "-30" you mentioned before. ;)


I think the only "test" you can do is to observe the pressure readings in the ABS module.


I believe that's correct, but am not 100% certain myself.


Interesting, because I don't see that documented in the label file. Paging @DrPeter or @Dana ...?

-Uwe-
Uwe-i dont know either but it definitely stop my brakes from sinking to the floor they are now hard again and i can stop on the dime but it only did the front left and front right the test didnt tell me to do the rear brakes. Ill do a full bleed tomorrow.
 

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Interesting, because I don't see that documented in the label file. Paging @DrPeter or @Dana ...?
Hmm. The B7 A4 (8E0-910-517.clb) uses a similar Bosch 8.0 system and we have BS 010 in the file but it is commented out. I suspect that's due to the lack-of confirmation that all of those ABS units support diagnostic bleed with the assist of a pressure bleeder.

At the very least I'll add internal notes to the 4F file. If I manage to locate any mention of the bleeding process in the repair manual or test plans we can make it appear in the label file for use while running VCDS.



Edit; I was unable to locate any mention of a diagnostic bleed in any of our sources. The repair manual only made reference of "positive pressure of 2 bar (29 psi) to bleed the hydraulic unit" and -VAS5234- or -VAG1869- pressure bleeder tools with this sequence:

Bleeding Brake System with Electronic Stability Program
Bleeding sequence for all vehicles
1 - Left front brake caliper
2 - Right front brake caliper
3 - Left rear brake caliper
4 - Right rear brake caliper
Bleed until brake fluid escapes with no bubbles and foam.
Close bleeder screw.


At this point I'll leave the minor label file edit as-is but we can revisit this in the future if needed.


@Cobie90, thanks for the update. Hopefully the brake system is back to normal after you bleed it this weekend! Time permitting, a screen shot or two of the BS 010 results couldn't hurt so we know what kind of on-screen feedback this ABS module provides the end user. Posting photos is explained here:
 
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