Cannot connect to [03 ABS Brakes] with VCDS

[Tigrou]

Hello,

I have a Polo 6R TDI 1.6 (from 2010)

Few months ago, I had issues with the ABS (the 3 related lights show up on the dashboard).



No matter what I tried in VCDS, I couldn't connect to the ABS controller (VCDS says "No Response from Controller" after 3 attempts).



I use a Hex V2 cable (STM32F429 chip). It was shipped with VCDS 22.3.1.
I checked the fuses and updated VCDS to 24.5 (CB: 0.4643.4 FW: 0.256), still didn't work.



I concluded the ABS controller was dead and took it to a repair shop.
Turns out the ABS controller was fine, it was a wheel sensor which was faulty. The mechanic could connect to ABS controller without any issue (with a very expensive VW kit)

Today I got the 3 lights again. Im pretty sure another sensor failed. I plugged VCDS and again, I can't connect to ABS.
Auto scan works fine (except it can't connect to ABS), I can connect to engine ECU or other controllers.

It's unclear to me what wrong with VCDS or the cable. Is this a well known issue ?

Here is the Auto-Scan result (engine was off) :

VCDS Version: 24.5.0.0 HEX-V2 CB: 0.4643.4
Data version: 20240429 DS355.0

VIN: **EDITED** License Plate:

Chassis Type: 6R-VW25 (6R0)
Scan: 01 03 08 09 15 17 19 25 44 56 61

VIN: **EDITED** Mileage: 276630km-171889miles


01-Engine -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine
Cannot be reached

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Cannot be reached

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301) Labels: 6R0-820-045-9AP.clb
Part No SW: 6R0 820 045 J HW: 6R0 820 045 J
Component: Climatic 25 0660
Revision: 00 11 25
VCID: 353721C935428872B45-8060


1 Fault Found
00705 - Relay for Coolant Fan; Stage 1 (J279)
009 - Open or Short to Ground
Freeze Frame:
Fault Status: 01101001
Fault Priority: 2
Fault Frequency: 254
Reset counter: 49
Mileage: 271470 km
Time Indication: 0
Date: 2019.04.19
Time: 20:19:52




-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels: Redir Fail!
Part No SW: 6R0 937 088 HW: 6R0 937 088
Component: BCM PQ25 Re4 H46 0304
Revision: BU046001 Serial number: 0104 030100005
Coding: 24B02BBF08A10000003001303D2B0CD08F00610F7E06004920 0000000000
Shop #: WSC 124697 483 00190
VCID: 7BA3F7F153E69E02021-802E


Subsystem 1 - Part No SW: 6R0 959 801 R HW: 6R0 959 801 R Labels: 6R0-959-801.CLB
Component: J386__TSG_FT 006 0902
Serial number: KU0-KU003.02.1013272
Coding: 48BC30


Subsystem 2 - Part No SW: 6R0 959 802 T HW: 6R0 959 802 T Labels: 6R0-959-802.CLB
Component: J387__TSG_BT 006 0902
Serial number: KU0-KU003.02.1010826
Coding: 48BC30


Subsystem 3 - Part No SW: 6R0 959 811 F HW: 6R0 959 811 F
Component: J388__TSG_HL 006 0902
Serial number: KU0-KU008.02.1010993
Coding: 48BC32


Subsystem 4 - Part No SW: 6R0 959 812 F HW: 6R0 959 812 F
Component: J389__TSG_HR 006 0902
Serial number: KU0-KU009.02.1016924
Coding: 48BC32


No fault code found.


-------------------------------------------------------------------------------
Address 15: Airbags
Cannot be reached


-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:| 5K0-920-xxx-17.clb-SRI1
Part No SW: 6R0 920 861 D HW: 6R0 920 861 D
Component: KOMBI H03 0205
Serial number: 00000000000000
Coding: 140A00
Shop #: WSC 124697 483 00190
ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04052
ROD: EV_Kombi_UDS_VDD_RM09_004_VW25.rod
VCID: 363526C528C4836ABDF-8062


No fault code found.


-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels:. 6R0-907-530-V1.clb
Part No SW: 6R0 907 530 B HW: 1K0 907 951
Component: J533 Gateway H28 0020
Revision: H28 Serial number: 100210F1000097
Coding: 7D021D00080000000002
Shop #: WSC 124697 483 00190
VCID: 323D1AD5C82C9F4A917-8066


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 H03 0205
Serial number:
Coding: 000000
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03006
ROD: EV_Immo_UDS_VDD_RM09_VW25.rod
VCID: 6A8DC2B52CFC178AE97-803E


No fault code found.


-------------------------------------------------------------------------------
Address 44: Steering Assist
Cannot be reached


-------------------------------------------------------------------------------
Address 56: Radio (J503) Labels:. 5M0-035-1xx-56.clb
Part No SW: 5M0 035 156 B HW: 5M0 035 156 B
Component: Radio H21 0057
Revision: R0000000 Serial number: VWZAZ1K8595916
Coding: 0000020002
Shop #: WSC 124697 483 00190
VCID: 2809F8BDF2F0E59A3F3-807C


No fault code found.


-------------------------------------------------------------------------------
Address 61: Battery Regul.
Cannot be reached


End----------(Elapsed Time: 01:14, VBatt start/end: 12.1V/12.1V)-----------
Gateway Installation List:


01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000

[iichel]

It's a clone cable and they are all s**t. It also can't talk to your engine.

[Tigrou]

It's a clone cable and they are all s**t. It also can't talk to your engine.

You are right it's a clone cable but noneless it should work.

The connection with the engine was not possible because it was turned off during auto-scan.
Everything else works (other controllers, output tests, ...).

[Maarten]

Try without running engine.
Otherwise buy the original cable or visit a member with one

[ciclo]

If I were you, and due to the age of the vehicle, I would have changed all 4 ABS sensors when you took the car to the repair shop, or rather, I would have replaced them myself.

IMHO, the ORIGINAL VCDS is a GREAT bet, fast and effective diagnostic tool, constantly updated by the creators, with just one use the difference in cost compared to the tempting copies/clones is amortized. It is 100% worth it even for sporadic use. The more you use it, the happier you will be to have the Original VCDS.

I have the latest VAS, VCP, etc... and I use the Original VCDS on many occasions, its use is devilishly effective.

[amer6R]

check the small fuse box that is on the battery ( its under a cover) for loose connections.
Also clean with sandpaper under the but that attaches the small fuse box to the metal type fuse that is on the battery.

From my expirience you wont be able to communicate not even with vas5054A, elm327... indicating that there is some strange gremlin issue.

Maybe try with some other diagnostic tool and report back.
Maybe try with some other diagnostic tool and report back.
Edit read the post: deff issue in diagnostic tool. try getting the v1 version with atmega chip that one worked flawlessly.


Sorry im typing this 7 times i get logged out from some strange reason.

[Tigrou]

First, thanks all for your comments.

Try without running engine.

I tried it already, including riding the car before as it would magically wake up the ABS.
I also completely uninstalled and re-installed VCDS (including drivers) but that does not change anything.

Otherwise buy the original cable or visit a member with one

That would be the best but I don't know anybody with a rosstech cable in my region.
The real one cost about 5 times more than clone I got (which is about 80 EUR). I don't think it worth the investment anymore as I will probably not keep that car in years to come

Either clone cable is faulty, either there is something wrong with ABS that prevent diagnostic (eg: broken wire).
ABS is still working for sure.

I am planning to visit the car mechanic I usually go to, in early January. I will be with him all the time so I'm going to see what's wrong.
Last time he was able to connect to ABS even if I couldn't myself (with very expensive kit, it costs 4 figures + yearly license according to what he told me).

If I were you, and due to the age of the vehicle, I would have changed all 4 ABS sensors when you took the car to the repair shop, or rather, I would have replaced them myself.

Good idea, I will probably go that way. The wo sensors on the rear wheels already failed and have been replaced this year.

check the small fuse box that is on the battery ( its under a cover) for loose connections.
Also clean with sandpaper under the but that attaches the small fuse box to the metal type fuse that is on the battery.

I tried that last time, verified all fuses and the connection between fuse box and battery. At that time, I concluded ABS was dead (but it wasn't the case).
I also wanted to check ABS pins but connector is impossible to detach. The red lock does not want to slide down, despite many attempts.