Disable washer fluid light on an Audi B8

   #21  

Jack@European_Parts

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Keep in mind you are not switching ground here, you are measuring resistance change to ground & that is with always ground supplied by J519.

There are indeed switched devices & mixed with variable resistors in this shared track to ground & is why I say isolate the other sensors first because they can run interference on the daisy chain!

Voltage should be seen on pin 2 and pin 1 to ground, only thing is there should be a difference depending on fluid level or sensor readings and if sensor is wrong part number it can give you fake readings making J519 reject a wrong or aftermarket part in many cases.

When I say you can grab ground connection, you can grab ground from other sensors if operational to compete the value if the pin is hot at G33 PIN 2 otherwise you must investigate or overlay feed pin from J519 T32b/ PIN 28.
I am unsure if ground is being added up like a LIN bus and is why I would refrain from using external Terminal 31 Ground outside the J519 but you could try just to see.

My net went out and this site times out too fast ........
 
   #22  

Dana

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Can you scan blocks of BCM/Cluster to see if we can locate the washer tank values, Uwe please chime in if you have handy?

As can be seen, G33 is fed by J519 from T32b/ PIN 25 to T32b/ PIN 28 to loop the washer sensor at J519.

The feed tracks are shared for F34,G17,G32.......!
Hi Jack,

Thanks for digging deeper. I should have remembered this (because Brake Pad monitoring is also a function of J519 on this chassis) but BCM1 supports a coding bit in Byte 17/Bit 3 labeled: Washer fluid reservoir level sensor (G33) installed

Diagnosing the problem would be best as per your advice but I think the Address 09/BCM1 coding bit would also need to be disabled if the OP wants to kill the function entirely.

In regards to MVBs, there appear to be 2 but it depends on the installed BCM.

All MLB based BCM1s should support:
027,4,Windshield washer, fluid level (G33),Full = Full fluid level\nSignal type: input

Facelift (i.e. V2) BCM1s may support:
098,1,Washer Level,(G33) Resistance

I would recommend checking MVB groups 027 -and- 098, or better yet running and posting an entire Pre-label file Blockmap of address 09 here, before changing coding to see if both groups are supported. If 098 is supported it may shed light on a larger problem that could cause Brake fluid level (or similar) issues as well.

-Dana
 
   #23  

Jack@European_Parts

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Dana,

This is precisely why I was refraining from endorsing doing this mod or by coding, unless the OP verifies the safety circuit for the "brake fluid level tank sensor" ( F34 ) is authenticated to still operate?

Brake pad wear sensor or others are discretionary, F34 is not, now is it?

OP

It is only two wires to authenticate or overlay directly, I would strongly encourage fixing, versus a defeat and please authenticate the sensor is installed correctly and the right part number, okay?

FOD

 
   #24  

4lane

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I'm back at this. Part # is indeed correct. The problem is one wire severed somewhere near the firewall so that circuit is open. I'll never be able to fix it. Here is the scan with VCDS changes reverted. I will do some BCM scans next and and blockmap of Address 09 if I am able. Then I'll pray you find the washer tank values.

Code:
Thursday,26,November,2020,15:11:11:02305
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.4.2.0 (x64)  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
www.Ross-Tech.com


VIN: WA1UFAFL0DA069272   License Plate:
Mileage: 106990km-66480mi   Repair Order:


Chassis Type: FL-AU48 (8R0)
Scan: 01 02 03 05 08 09 15 16 17 19 36 42 44 46 47 52 53 56 5F 62
          6C 6D 72

VIN: WA1UFAFL0DA069272   Mileage: 106990km-66480miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- 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
36-Seat Mem. Drvr -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (DET-CPMA)       Labels:. 06H-907-115-CDN.clb
   Part No SW: 8K5 907 115 F    HW: 8K2 907 115 L
   Component: 2.0l R4/4V TF H09 0008
   Revision: ECH09---  
   Coding: 722A0013242600062000
   Shop #: WSC 54964 001 1048576
   ASAM Dataset: EV_ECM20TFS0118K5907115F 001009
   ROD: EV_ECM20TFS0118K5907115F.rod
   VCID: 3537DC2F05C1E6B3B15-8060

No fault code found.
Readiness: 1110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0BK-927-156.clb
   Part No SW: 8K1 927 158     HW: 0BK 927 156 AL
   Component: 0BK 20TFSIUSA H16 1006
   Revision: --H16---  
   Coding: 000002
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMAL551211 002022
   ROD: EV_TCMAL551211_002_AU48.rod
   VCID: 74B1212B4E3BBFBB46B-8020

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K9 907 379 M    HW: 8K9 907 379 M
   Component: ESP8 quattro  H09 0100
   Revision: --------    Serial number: --------------
   Coding: 0E1D18
   Shop #: WSC 06334 000 00000
   VCID: 4CC199CB76CB877BFEB-8018

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 FP    HW: 8K0 907 064 FP
   Component: BCM2 2.0      H10 0602
   Revision: 00002001  
   Coding: 0D820000000000000000
   Shop #: WSC 06335 000 00000
   VCID: 035372F71B1588034F1-8056

   Subsystem 1 - Part No SW: 8K0 905 852 E    HW: 8K0 905 852 E
   Component: J764 ELV MLB  H40 0046
   Serial number: 2312000100185014  

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:. 8Kx-820-043-3Z.clb
   Part No SW: 8K1 820 043 N    HW: 8K1 820 043 N
   Component: KLIMA 3 ZONEN H04 0123
   Revision: C1000000    Serial number: 01110520121266
   Coding: 6480208000
   Shop #: WSC 06335 000 00000
   VCID: 3333E2370B35F8839F1-8066

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 DH    HW: 8K0 907 063 AH
   Component: BCM1 1.0      H14 0103
   Revision: 08014001    Serial number: 00000030437701
   Coding: 26000091803CAFC00000480300003D0D0F1C4708A2090221000008000000030100000030000000
   Shop #: WSC 08185 444 103375
   VCID: 78A9151B52D3DBDB6A3-802C

   Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 110512  H07 0070
   Serial number: SWF12050115803    
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0002
   Serial number: 20271225          
   Coding: 02005D

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031
   Serial number: 00000000000305120151

   Subsystem 4 - Part No SW: 4G0 907 410 A    HW: 4H0 907 410 A
   Component: USHL4.2  H30 0030
   Serial number: 0000002274555R1NZ702

   Subsystem 5 - Part No SW: 4H0 907 658     HW: 4H0 907 658
   Component: AQ_Hum_Sensor  H02 0002
   Serial number: 2908C126000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8K0-959-655.clb
   Part No SW: 8K0 959 655 M    HW: 8K0 959 655 M
   Component: AirbagVW-AU10 H46 0610
   Serial number: 003KEDA014G  
   Coding: 303844354A32303030304A55304C384B3053
   Shop #: WSC 00040 002 1048576
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 47CBA6E76F2D6423D39-8012

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C
   Component: BF-Gewichtss.  H02 0040
   Serial number: 5810000R1200008MMA

   Crash sensor for side airbag: driver side:
   Serial number: 6334MSME6E514072C

   Crash sensor for side airbag: front passenger side:
   Serial number: 6344MSME6F222D3BS

   Crash sensor for side airbag: rear: driver side:
   Serial number: 6352QSME441653628

   Crash sensor for side airbag: rear: passenger side:
   Serial number: 6362QSME4F15014CK

   Crash sensor for front airbag: driver side:
   Serial number: 63732SME6D14325A0

   Crash sensor for front airbag: front passenger side:
   Serial number: 63832SME4C145162Z

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8R0 953 568 Q    HW: 8R0 953 568 Q
   Component: Lenks.Modul   H02 0171
   Revision: 00000000    Serial number: 20120514001084
   Coding: 000017
   Shop #: WSC 06335 000 00000
   VCID: 4FFB8EC787DDBC639B9-801A

   Component: E221 - MFL  H03 0003

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 982 A    HW: 8K0 920 982 A
   Component: KOMBIINSTR.   H35 0540
   Revision: 00000000    Serial number: NTC23475D    
   Coding: 8B2629020301D705020000
   Shop #: WSC 06335 000 00000
   VCID: 323DE733F42FF18B947-8066

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8R0 907 468 C    HW: 8R0 907 468 C
   Component: GW-BEM 4CAN-M H10 0025
   Revision: 1Y030014    Serial number: 1441Y125030368
   Coding: 00C303FF00
   Shop #: WSC 06335 000 00000
   VCID: 3FDBBE07377D2CE36B9-806A

   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181
   Component: J367-BDMHella  H03 8041
   Serial number: 8175957401        

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels:. 8T0-959-760.clb
   Part No SW: 8K0 959 760 D    HW: 8K0 959 760 D
   Component: MEM-FS        H06 0076
   Revision: AA000000    Serial number: 00000029145580
   Coding: 00581B00000000000000
   Shop #: WSC 06335 000 00000
   VCID: 3B23CA17236530C3471-806E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8K0 959 793 P    HW: 8K0 959 793 P
   Component: TSG FA        H02 0506
   Revision:             Serial number: 0000029908343
   Coding: 011C13205E00410001
   Shop #: WSC 06335 000 00000
   VCID: 4DC794CF8DD18E73E95-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 8K0-909-144.clb
   Part No SW: 8K0 909 144 F    HW: 8K0 909 144 B
   Component: RCEPS         H36 0507
   Revision: 00001000    Serial number: 0020526803
   Coding: 100000000001
   Shop #: WSC 08185 444 122181
   ASAM Dataset: EV_RCEPSAU48X 008014
   ROD: EV_RCEPSAU48X_008.rod
   VCID: 3431E12B0EBBFFBB86B-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 FP    HW: 8K0 907 064 FP
   Component: BCM2 2.0      H10 0602
   Revision: 00002001    Serial number: 0176517259  
   Coding: 0126023A20BA709580B0023200000000
   Shop #: WSC 06334 000 00000
   VCID: 035372F71B1588034F1-8056

   Subsystem 1 - Part No SW: 8K0 959 719 B    HW: 8K0 959 719
   Component: GTO BF  H01 0080
   Serial number: 00000000000000519778

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501

   Subsystem 3 - Part No SW: 8K0 959 591 B    HW: 8K0 959 591
   Component: J245 PS150  H08 0043

   Subsystem 4 - Part No SW: 8K0 959 591 B    HW: 8K0 959 591
   Component: J394 PS240  H08 0043

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-BOM.clb
   Part No SW: 8T1 035 223 A    HW: 8T1 035 223 A
   Component: DSP Prem      H04 0030
   Revision: 00004001    Serial number: 94814003201301
   VCID: 2D07F44FED11AE73C95-8078

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8K0 959 792 P    HW: 8K0 959 792 P
   Component: TSG BF        H02 0506
   Revision:             Serial number: 0000029772602
   Coding: 011C13205E00410001
   Shop #: WSC 06335 000 00000
   VCID: 4CC199CB76CB877BFEB-8018

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 8K0-907-801-V2.clb
   Part No SW: 8K0 907 801 L    HW: 8K0 907 801 J
   Component: EPB-4         H01 0003
   Revision: --------    Serial number: 00000000048809
   ASAM Dataset: EV_ParkiBrake 001027
   ROD: EV_ParkiBrake_AU48.rod
   VCID: 3829D51B12D31BDBAA3-806C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (R)       Labels: Redir Fail!
   Part No SW: 4G0 035 080 G    HW: 4G0 035 080
   Component: Radio U SIRIU H60 0133
   Revision: AB001007    Serial number: 158H10E7505942
   Coding: 020007010000000001
   Shop #: WSC 01238 002 1048576
   VCID: 221D1773A4CF610B647-8076

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:. 4E0-035-6xx-5F.clb
   Part No SW: 8R1 035 746 G    HW: 8R1 035 746 A
   Component: H-BNT-NA      H42 0901
   Revision: --------    Serial number: 096E 0C7510836
   Coding: 010200050006A1EF41028F4E00000403140000000000000000
   Shop #: WSC 06335 000 00000
   VCID: 3B23CA17236530C3471-806E

   Subsystem 1 - Part No: 8R0 060 884 AD
   Component: NAR 2011  0505

   Subsystem 2 - Part No SW: 8R0 919 604     HW: 8R0 919 604
   Component: DU7 High  H41 0104
   Serial number: A130EG0CS169387    

   Subsystem 3 - Part No SW: 8T0 919 611 L    HW: 8T0 919 611 C
   Component: E0380 Bedient  H02 0030
   Serial number: 00000001153298    

   Subsystem 4 - Part No: 8R0 060 961 B
   Component: CD-Database  3371

1 Fault Found:
01043 - Control Module; Incorrect Software Version
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 225
                    Mileage: 106998 km
                    Time Indication: 0
                    Date: 2020.11.26
                    Time: 15:06:11

             Freeze Frame:
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000000
                    Bin. Bits: 00000000 00000001


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 D    HW: 8K0 959 795 D
   Component: TSG HL        H01 0506
   Revision:             Serial number: 0000030049731
   Coding: 010C13204000210001
   Shop #: WSC 06335 000 00000
   VCID: 43D3B2F75B9548030F1-8016

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 8T0-907-441.clb
   Part No SW: 8T0 907 441 D    HW: 8T0 907 441 D
   Component: J772__Rearview      0140
   Revision: --H06---    Serial number: 525PA8-J229325
   Coding: 1000007
   Shop #: WSC 06335 000 00000
   VCID: 392FD01F255902D355D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (J605)       Labels: 8K9-827-851.clb
   Part No SW: 8K9 827 851 A    HW: 8K9 827 851 A
   Component: J605  Master  H52 0330
   Revision: --------    Serial number: 8K9827851A  
   VCID: 3C21C90B266B37FB4EB-8068

   Subsystem 1 - Part No SW: 8K9 827 852 A    HW: 8K9 827 852 A
   Component: J756  Slave  H52 0330
   Serial number: 8K9827852A        

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 D    HW: 8K0 959 795 D
   Component: TSG HR        H01 0506
   Revision:             Serial number: 0000030050712
   Coding: 010C13204000210001
   Shop #: WSC 06335 000 00000
   VCID: 43D3B2F75B9548030F1-8016

No fault code found.

End----(Elapsed Time: 01:57, VBatt start/end: 11.5V/11.5V. VIgn 11.5V)-----
 
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