Replacing rear brake pads causes EPB fault

[Old Navman]

No, it's your ABS module coding which was cleared by replacing the EPB module that's the problem. Always always always take AND save a full autoscan before changing anything from a hardware or coding perspective.
If you don't have an old autoscan you might need to do a bit of trial and error to find the correct ABS coding. Luckily it's not an MK60EC1 which has a much more complicated coding scheme.
If you don't have a copy of your original ABS coding try searching online for one from a similarly equipped car.

Thanks for the guidance mate. I'll have to check my old laptop but unfortunately I'm not holding my breath I'll find an autoscan inclusive of coding. And if I understand you correctly a "similarly equipped car" would need to be a local model not an o/s one?

I'm also wondering, given the current faults, if it's safe to use the vehicle as there aren't any MIL active? I mean, if I didn't have VCDS I'd none wiser that there is anything wrong with the vehicle.

[kamold]

Wouldn't necessarily need to be local. Just same engine etc.
If you have no mil on then you're pretty much right to go. But you should be fault free.
That brake booster fault COULD mean that in an emergency braking situation the abs might not behave as designed.


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[kamold]

Autoscan has the coding for all modules.

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[Old Navman]

Wouldn't necessarily need to be local. Just same engine etc.
If you have no mil on then you're pretty much right to go. But you should be fault free.
That brake booster fault COULD mean that in an emergency braking situation the abs might not behave as designed.

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Could there still be a real mechanical problem with Brake Boost Vacuum System?
Since I o/hauled the right caliper and bled all the wheels I was cautioned about pressing the brake pedal too far (during the procedure) to the floor as this can damage the brake master cylinder seals. The thought here apparently is because normal brake pedal travel (with brake boost) is relatively short pressing the pedal all the way to the floor can distort the seals.

[kamold]

Sure it's possible but you will get that fault if abs is not correctly coded for the car config.
Confirm the coding is correct first then if you can't clear the fault maybe that's happened but you'd be unlucky

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[Old Navman]

Sure it's possible but you will get that fault if abs is not correctly coded for the car config.
Confirm the coding is correct first then if you can't clear the fault maybe that's happened but you'd be unlucky

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Ok, if I find the old autoscans I'll post asap.

[Old Navman]

Ok, here is one from December 2020

Chassis Type: 3C (3C0)
Scan: 01 02 03 08 09 15 16 17 19 22 25 36 42 44 46 52 53 56 62 65
69 72 76

VIN: WVWZZZ3CZ6P178475 Mileage: 313190km-194607miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
22-AWD -- Status: OK 0000
25-Immobilizer -- 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: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: Malfunction 0010
69-Trailer -- Status: Sporadic communication error 1000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine Labels: 03H-906-032-BLV.lbl
Part No SW: 03H 997 033 K HW: Hardware No
Component: P3.2 FSI-EU4 G00 2368
Revision: --H11--- Serial number: VWZCZ000000000
Coding: 0000175
Shop #: WSC 00028 028 00001
VCID: 356757135C8E40898D9-8060

No fault code found.
Readiness: 0110 0001

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 02E-927-770.lbl
Part No SW: 02E 300 047 J HW: 02E 927 770 AE
Component: GSG DSG 070 1154
Revision: 04507000 Serial number: 00000602071105
Coding: 0000020
Shop #: WSC 00028 028 00001
VCID: 1F4B95BBCE72EAD9775-804A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 3C0-614-095-C2.clb
Part No SW: 3C0 614 095 Q HW: 3C0 614 095 Q
Component: ESP 440 C2 H015 0003
Revision: H015 Serial number: 0667165431
Coding: 0046535
Shop #: WSC 00028 028 00001
VCID: 30696607A3EC65A1DEF-8065

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 3C0-907-044.lbl
Part No SW: 3C0 907 044 BB HW: 3C0 907 044 BB
Component: ClimatronicPQ46 112 0606
Revision: 00112021 Serial number: 00000000000000
Shop #: WSC 00000 000 00000
VCID: 62CDDC4FBD80873118B-8037

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 3C0-937-049-23-H.lbl
Part No SW: 3C0 937 049 J HW: 3C0 937 049 J
Component: Bordnetz-SG H37 1301
Revision: 00H37000 Serial number: 00000003835219
Coding: E1848F0700041A00000A00000F00000000085D435C0000
Shop #: WSC 00028 028 00001
VCID: 30696607A3EC65A1DEF-8065

Subsystem 1 - Part No: 3C2 955 119
Component: Wischer VW461 012 0503
Coding: 00063445
Shop #: WSC 00028

Subsystem 2 - Part No: 1K0 955 559 T
Component: RegenLichtSens 011 1110
Coding: 00208933
Shop #: WSC 00028

4 Faults Found
01502 - Bulb for Rear Fog; Left (L46)
012 - Electrical Fault in Circuit
Freeze Frame:
Fault Status: 01101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 3
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:12:00

Freeze Frame:
ON
Voltage: 12.00 V
ON
ON
OFF
OFF
OFF

01519 - Bulb for Back-Up Lights; Right (M17)
012 - Electrical Fault in Circuit
Freeze Frame:
Fault Status: 01101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 3
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:12:00

Freeze Frame:
ON
Voltage: 12.00 V
ON
ON
OFF
OFF
OFF

01500 - Bulb for Fog-Lamps; Right (L23)
010 - Open or Short to Plus
Freeze Frame:
Fault Status: 01101010
Fault Priority: 4
Fault Frequency: 1
Reset counter: 3
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:12:00

Freeze Frame:
ON
Voltage: 12.00 V
ON
ON
OFF
OFF
OFF

01517 - Control Module for Trailer/Towing Sensor (J345)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 43
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:25:00

Freeze Frame:
OFF
Voltage: 12.10 V
OFF
ON
OFF
OFF
OFF

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 3C0-909-605.lbl
Part No SW: 3C0 909 605 K HW: 3C0 909 605 K
Component: 17 AIRBAG VW8R 029 2521
Revision: 10029000 Serial number: 003A3P1ZPVBF
Coding: 0012599
Shop #: WSC 00028 028 00001
VCID: 2E55787FB9D87351CC3-807B

Subsystem 1 - Serial number: 6332MSME0F5F0E3BY

Subsystem 2 - Serial number: 6342MSME0F49367AQ

Subsystem 3 - Serial number: 6351HTS64IKAP662E

Subsystem 4 - Serial number: 6361HTS64IKQDAR21

Subsystem 5 - Serial number: 00000000000000000

Subsystem 6 - Serial number: 00000000000000000

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 3C0-953-549-SW20.lbl
Part No SW: 3C0 953 549 E HW: 3C0 953 549 E
Component: J0527 0015
Revision: 00005000 Serial number: 3C5953507P
Coding: 0001111
Shop #: WSC 00028 028 00001
VCID: 2E55787FB9D87351CC3-807B

Subsystem 1 - Part No: XXXXXXXXXXX
Component: E0221 007 0050

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 3C0-920-xxx-17.lbl
Part No SW: 3C0 920 870 P HW: 3C0 920 870 P
Component: KOMBIINSTRUMENT VD1 4240
Revision: X0033000 Serial number: 00000000000000
Coding: 0007705
Shop #: WSC 30081 959 88100
VCID: 30696607A3EC65A1DEF-8065

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 3C0-907-530-V3.clb
Part No SW: 3C0 907 530 Q HW: 3C0 907 951
Component: J533 Gateway H13 0172
Revision: H13 Serial number: 3640P151190AC5
Coding: FD82FF4F00020200F100
Shop #: WSC 12345 123 12345
VCID: 2F6B657BBED27A59C75-807A

1 Fault Found
01517 - Control Module for Trailer/Towing Sensor (J345)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 43
Mileage: 313196 km
Time Indication: 0


-------------------------------------------------------------------------------
Address 22: AWD Labels: 1K0-907-554.lbl
Part No: 1K0 907 554 C
Component: HALDEX 4Motion 0108
Coding: 0000001
Shop #: WSC 00000 000 00000
VCID: 2D577F73B4DE0849F59-8078

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 3C0-959-433-25.clb
Part No SW: 3C0 959 433 P HW: 3C0 959 433 P
Component: IMMO 043 0364
Revision: 00043000 Serial number: VWZCZ000000000
Shop #: WSC 131071 1023 2097151
VCID: 377B5D1B4682B2999F5-8062

Subsystem 1 - Part No: 3C0 905 861 D
Component: ELV 024 0370
3C0905861D ELV 024 0370

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr Labels: 3C0-959-760.lbl
Part No SW: 3C0 959 760 B HW: 3C0 959 760 B
Component: Sitzverstellung 0701
Revision: 00003000 Serial number: 00000000000000
Shop #: WSC 00000 000 00000
VCID: 2C5172778FC40141E27-8079

No fault code found.

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

[Old Navman]

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 1K0-959-701-MAX2.lbl
Part No: 1K0 959 701 L
Component: Tuer-SG 024 2462
Coding: 0000951
Shop #: WSC 00028 028 00001
VCID: 377B5D1B4682B2999F5-8062

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-14x-44.clb
Part No: 1K2 909 144 K
Component: EPS_ZFLS Kl.5 D06 1701
Shop #: WSC 00000 000 00000
VCID: 34616A1757F45981BA7-8061

No fault code found.

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

Address 46: Central Conv. Labels: 3C0-959-433-46.clb
Part No SW: 3C0 959 433 P HW: 3C0 959 433 P
Component: KSG PQ46 RDK 043 0213
Revision: 00043000 Serial number: VWZCZ000000000
Coding: 01910A0801860E76380494157008DFCE101800
Shop #: WSC 00028 028 00001
VCID: 377B5D1B4682B2999F5-8062

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

Subsystem 2 - Part No: 3C0 951 171 A
Component: Neigungssensor 002 0508

Subsystem 3 - Part No: 3C0 951 171 A
Component: Innenraumueberw.002 0508

1 Fault Found
01517 - Control Module for Trailer/Towing Sensor (J345)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 4
Fault Frequency: 1
Reset counter: 43
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:33:15


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 1K0-959-702-MAX2.lbl
Part No: 1K0 959 702 L
Component: Tuer-SG 024 2462
Coding: 0000950
Shop #: WSC 00028 028 00001
VCID: 38795E274B9CBDE196F-806D

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake Labels: 3C0-907-801-53.clb
Part No SW: 3C0 907 801 B HW: 3C0 907 801 B
Component: EPB VC8HC001 013 0001
Revision: 013
Coding: 0000012
Shop #: WSC 131071 1023 2097151
VCID: 214F9343F806DC29411-8074

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: None
VCID: 55A7F793BCCE60896D9-8000

No Faults Found
or DTCs not supported by controller
or a communication error occurred

-------------------------------------------------------------------------------
Address 62: Door, Rear Left Labels: 1K0-959-703-GEN2.lbl
Part No: 1K0 959 703 F
Component: Tuer-SG 021 2432
Coding: 0000144
Shop #: WSC 00028 028 00001
VCID: 3363690B52FA5EB9A3D-8066

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure Labels: 3C0-959-433-65.lbl
Part No SW: 3C0 959 433 P HW: 3C0 959 433 P
Component: RDK 0391
Revision: 00043000 Serial number: VWZCZ000000000
Coding: 0161211
Shop #: WSC 12345 123 12345
VCID: 377B5D1B4682B2999F5-8062

1 Fault Found
01487 - System Function Test
005 - No or Incorrect Basic Setting / Adaptation
Freeze Frame:
Fault Status: 01100101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 3
Mileage: 313196 km
Time Indication: 0
Date: 2020.12.08
Time: 19:30:04


-------------------------------------------------------------------------------
Address 69: Trailer Labels: 1K0-907-383-MY7.lbl
Part No SW: 1K0 907 383 HW: 1K0 907 383
Component: ANHAENGERELEKTR 003 0020
Coding: 0000001
Shop #: WSC 00000 000 00000
VCID: 6ADDB46F45B0DF71D0B-803F

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right Labels: 1K0-959-704-GEN2.lbl
Part No: 1K0 959 704 F
Component: Tuer-SG 021 2432
Coding: 0000144
Shop #: WSC 00028 028 00001
VCID: 34616A1757F45981BA7-8061

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 3C0-919-283.lbl
Part No SW: 3C0 919 283 B HW: 3C0 919 283 B
Component: Parkhilfe 8-Kan 004 0011
Revision: 00004000 Serial number: 82930602501458
Coding: 0011014
Shop #: WSC 30081 959 88100
VCID: 28598E679B3C2D6106F-807D

No fault code found.

End-------------------------(Elapsed Time: 03:12)--------------------------

[kamold]

Copy your abs coding back from that scan.
That's what it should be.


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[Old Navman]

Copy your abs coding back from that scan.
That's what it should be.


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Yes, I can see the original ABS coding differs from the current one. Do you mean in VCDS go ABS, coding, etc, etc and change just the coding to the previous one being Coding: 0046535?

[kamold]

Correct.
Then clear faults and check if you have anything left.

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[Old Navman]

Correct.
Then clear faults and check if you have anything left.

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Sounds pretty straight forward kamold, I shall try this over the coming weekend and report back. Hope one day this post might be of some help to another dedicated VW Passat owner. Now, approaching 318K km ... only 182K km to target mileage.

But ... in the mean time I still have to learn the best way to get the 1 piece manifold off to replace the broken PCV valve membrane.

[Old Navman]

So, it took a while ... but today I've recoded the ABS with the "old" code. Sure enough - it worked. No more ABS fault codes of any kind. I've still got that annoying fault code to do with radio head unit but that ought to be a subject of another post.

[kamold]

Good work.