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Thread: VW Caddy Mk3 Brake Issue - Help please

  1. #1
    Verified VCDS User rM00R3's Avatar
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    VW Caddy Mk3 Brake Issue - Help please

    My brother has a 2012 VW Caddy 1.6 petrol. I jumped into it the other day and when braking, it felt like the car was on ice and pulled to the left.
    Got it on a hoist, checked and found that the front right caliper was not braking (at all) and brake was beginning to rust - obviously been some time since it worked. Don't understand how he didn't notice!

    It is a pretty new car - done about 50,000km and driving well (except for the brakes).

    There are no errors on the VCD scan, no lights illuminated. It is just the front right brake that is not working.

    Found that there was air in the line and carried out the following:

    1. Did a bleed conventionally (push brake 10 times, push and hold, open bleed screw, close bleed screw, repeat x 5. Starting from left rear, then right rear, then left front and lastly right front). Once completed, the front right caliper started locking. Took it for a test drive and as soon as I press the brake, front right stopped working. Front left and rears still working fine.
    2. Bled it again, caliper starts working, took it for a test drive, with same result - front right stops working.
    3. Decided to try something different. Completely flushed the system with a Motive pressure bleeder and eliminated any chance of air with new brake fluid, tested brakes moving a few metres forward, brake hard, a few metres in reverse, brake hard and it front right continued to work. Took it for another test drive and front right brake stopped working.
    4. Went onto VCDs, did a bleed with the ABS pump, brake worked on the hoist, but again, the second the car is taken on a test drive, the brake stopped working.

    Something to note:
    When bleeding the brakes, conventional and using Motive pressure bleeder, the front right would not bleed until the ignition was turned to the ON position or the car was started...

    Also, the brake pedal works as it should and is not soft.

    I have searched a lot of the forums and have not come across anyone with the same issue... I might be wrong, but my understanding is that the right rear brake works with the front left and rear left works with right front. Brake pressure moving to opposite corners needs to be equal in pressure and if there is a difference in pressure, the line with the lower pressure gets closed... but if the lines do not have air in them, then there can only be an equal amount of pressure at all times whether the brake is applied or not.

    All the information above keeps pointing me to the ABS pump and/or control unit - but there are no fault codes or dashboard lights... Anyone have any idea on what the problem could be?

  2. #2
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    HI Rmoor3,
    Front and rear brakes do not have equal pressure, as the rear brake would try to lock all the time. Yes this does sound like the ABS module, Vauxhall Corsa D's have a common problem just like this. An Autoscan to confirm what ABS is fitted would be good.
    Regards HMC

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  4. #3
    Verified VCDS User rM00R3's Avatar
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    Hi HMC,
    Thanks for the response. That makes more sense wrt the brake pressure.

    Here is the last scan done:

    Code:
    Wednesday,18,March,2020,08:55:46:63270
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.2 (x64)
    Data version: 20200210 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WV1ZZZ2KZBX236969   License Plate: 
    
    
    Chassis Type: 2K-VN35 (7N0)
    Scan: 01 03 09 15 16 17 19 25 42 44 46 52
    
    VIN: WV1ZZZ2KZBX236969   Mileage: 62490km-38829miles
    
    01-Engine -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- 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: OK 0000
    25-Immobilizer -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (BSF)       Labels: 06A-906-033-BGU.lbl
       Part No SW: 06A 906 033 MG    HW: 06A 906 033 JF
       Component:  BSF S71 1.6 2V     7991  
       Revision: --H01---    Serial number:               
       Coding: 0022031
       Shop #: WSC 35110 377 08192
       VCID: 70E932E1635435CF55-8024
    
    No fault code found.
    Readiness: 0000 0000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
       Part No SW: 1K0 907 379 BD    HW: 1K0 907 379 BD
       Component: ESP MK60EC1   H31 0108  
       Revision: 00H31001    
       Coding: 433C400D09250300C21402EA9022C080300000
       Shop #: WSC 35110 377 08192
       VCID: 75E703F5DC3610E786-8020
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
       Part No SW: 2K5 937 086 B    HW: 2K5 937 086 B
       Component: BCM PQ35 M+   011 1044  
       Revision: BD011001    
       Coding: 4E1A0A3A8025F12A08800082940001244351728852220860648000000040
       Shop #: WSC 35110 377 08192
       VCID: 3567C3F59CB650E746-8060
    
       Subsystem 1 - Part No: 1T2 955 119 A  Labels: 1KX-955-119.CLB
       Component: Wischer 25101  26  0512 
       Coding: 009795
    
       Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS 301010 05  54  0403 
       Coding: 0330ED
    
       Subsystem 3 - Part No: 7N0 951 171 
       Component: DWA-Sensor 00  002 0205 
       Coding: 000000
    
       Subsystem 4 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HO  H05 1501 
       Coding: 000000
    
    2 Faults Found:
    02394 - Parking Light Left Front (M1) 
                010 - Open or Short to Plus
                 Freeze Frame:
                        Fault Status: 01101010
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 104
                        Mileage: 52496 km
                        Time Indication: 0
                        Date: 2012.08.08
                        Time: 09:02:43
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 13.90 V
                            ON
                            ON
                            OFF
                            OFF
                            OFF
    
    02395 - Parking Light Front Right (M3) 
                010 - Open or Short to Plus
                 Freeze Frame:
                        Fault Status: 01101010
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 104
                        Mileage: 52496 km
                        Time Indication: 0
                        Date: 2012.08.08
                        Time: 09:02:43
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 13.90 V
                            ON
                            ON
                            OFF
                            OFF
                            OFF
    
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
       Part No SW: 7E0 959 655 B    HW: 7E0 959 655 B
       Component: VW10Airbag00U H06 0013  
       Revision: --------    Serial number: 003HL002JC2X
       Coding: 000000000000000000000000000000003055
       Shop #: WSC 35110 790 50316
       ASAM Dataset: EV_AirbaVW10BPAVN750 A01026
       ROD: EV_AirbaVW10BPAVN750_VW12.rod
       VCID: 3567C3F594B650E746-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
       Part No SW: 1K5 953 507 M    HW: 5K0 953 549 
       Component: Lenks.Modul   007 0080  
       Revision: --------    Serial number:  90422JKB0008G
       Coding: 0080060000
       Shop #: WSC 35110 790 50316
       ASAM Dataset: EV_SMLSNGKUDS A05001
       ROD: EV_SMLSNGKUDS_A05.rod
       VCID: 3B73D5CDB2928697B0-806E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
       Part No SW: 2K0 920 865     HW: 2K0 920 865 
       Component: KOMBI         H04 0404  
       Serial number: 00000000000000
       Coding: 180000
       Shop #: WSC 35110 790 50316
       ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
       ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
       VCID: 6BD3258D8272D61760-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
       Part No SW: 7N0 907 530 C    HW: 1K0 907 951 
       Component: J533  Gateway H37 0614  
       Revision:   H37       Serial number: 161110F2002660
       Coding: 357401
       Shop #: WSC 35110 377 08192
       VCID: 3069F2E163D475CF15-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
       Part No SW: 5K0 953 234     HW: 5K0 953 234 
       Component: IMMO          H04 0404  
       Serial number: 00000000000000
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
       ROD: EV_Immo_UDS_VDD_RM09.rod
       VCID: 6ADD20898D88CF1F1B-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-793.lbl
       Part No: 1K0 959 793 
       Component: Tuersteuergeraet 74 0160  
       Coding: 0000000
       Shop #: WSC 35110 377 08192
       VCID: 76E504F901301BFF8F-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
       Part No: 1K0 909 144 J
       Component: EPS_ZFLS Kl. 140    3001  
       Revision: 00H17000    
       Shop #: WSC 35110 377 08192
       VCID: 316FF7E5A8DE7CC71A-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-792.lbl
       Part No: 1K0 959 792 
       Component: Tuersteuergeraet 02 0160  
       Coding: 0000000
       Shop #: WSC 35110 377 08192
       VCID: 75E703F51C3610E786-8020
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 02:02)--------------------------
    Last edited by Uwe; 03-19-2020 at 08:38 AM. Reason: CODE tags

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  6. #4
    Verified VCDS User NZDubNurd's Avatar
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    Although my suspected valve issue was permanent, https://forums.ross-tech.com/showthread.php?16431-MK60-ABS-blockage may help shed some light.

    I guess there's a chance yours is a mechanical issue causing and ABS valve to stick, or even an electrical one, holding a valve.

    While I think it's very unlikely, there could be a hose issue... but I'd expect the brake to get stuck on sometimes too though.

    The thing that became obvious on mine, was the wheel with the blocked valve got no brake pressure, and the wheel diagonal to it, on the same circuit, got too much! Sharp braking on a smooth gravel surface showed it clearly, but I could also feel the car pull t one side under heavy brakes or if creeping down a steep incline (like waiting in a line of cars etc).
    Allan
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    How to post a full Auto-Scan
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  8. #5
    Verified VCDS User rM00R3's Avatar
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    Quote Originally Posted by NZDubNurd View Post
    Although my suspected valve issue was permanent, https://forums.ross-tech.com/showthread.php?16431-MK60-ABS-blockage may help shed some light.

    I guess there's a chance yours is a mechanical issue causing and ABS valve to stick, or even an electrical one, holding a valve.

    While I think it's very unlikely, there could be a hose issue... but I'd expect the brake to get stuck on sometimes too though.

    The thing that became obvious on mine, was the wheel with the blocked valve got no brake pressure, and the wheel diagonal to it, on the same circuit, got too much! Sharp braking on a smooth gravel surface showed it clearly, but I could also feel the car pull t one side under heavy brakes or if creeping down a steep incline (like waiting in a line of cars etc).
    Hi NZDubNurd,
    Thanks for this. This sounds like the exact same problem. I have removed the block and found that it is in fact blocked. I am going to see if I can find/borrow/steal a 2054 block from somewhere and test. Will update next week.

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  10. #6
    Benevolent Dictator Uwe's Avatar
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    Rmoor3,

    Please Get Verfied. It looks like you are in Category 2) of that post.

    -Uwe-
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  12. #7
    Ross-Tech Employee Dana's Avatar
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    The OP registered for support so I changed his status to Verified VCDS User. I'll move this to the Car Repair Support sub-forum.

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  14. #8
    NostraJackAss Jack@European_Parts's Avatar
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    Hello and welcome OP.......

    Did you unplug ABS module and test to see if mechanical function on road test with proper default bias & in controlled environment to bifurcate the brake functions?

    If it does or did test A-OK as aforementioned question, did you consider changing the ABS module yet or complete assembly based on completed test observations?

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