S4 B6 ABS Problem

**shinyblueS4** · 17-02-2018,06:20 PM

I have an ABS problem on my B6 S4 which is driving me nuts.
Engines starts fine and car runs well. However, ABS light (solid) and brake light (flashing) on dash.
Also noticed that the brake lights are on permanently.

Tried VCDS and it will not communicate with the ABS module.
Looked at many posts on forums and have changed brake light switch, ABS electronic module, even central electric unit. No change.

One of the errors on VCDS is,
00625 - Vehicle Speed Signal
27-00 - Implausible Signal
So I checked MVB as follows,
Central Electric 014.2 326.4km/h
Engine 005.3 0km/h
Instruments 001.1 326.0km/h

Not sure where it's getting these speed values from? Could it be that it won't communicate with the ABS module when it thinks the speed is so high?

Would really appreciate some pointers.

Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
67 69 75 76 77

VIN: WAUZZZ8E43A329927 Mileage: 139650km-86774miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: 079-910-560-BBK.lbl
Part No SW: 8E0 910 560 HW: 8E0 907 560
Component: 4.2L V8/5V G 0030
Coding: 0011711
Shop #: WSC 63351 000 00000
VCID: 62C0A06ABEB36056E7-5102

2 Faults Found:
18057 - Powertrain Data Bus
P1649 - 008 - Missing Message from ABS Controller
18080 - Coolant Fan Control 1
P1672 - 004 - Open or Short to Ground
Readiness: 0110 1101

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 Q
Component: A4 Klimaautomat 1116
Coding: 00000
Shop #: WSC 63351
VCID: 2F66195EEDE19D3E38-5102

4 Faults Found:
01592 - Air Quality Sensor (G238)
37-00 - Faulty
00819 - High Pressure Sensor (G65)
29-00 - Short to Ground
01206 - Signal for Duration of Ignition Off Time
27-00 - Implausible Signal
01312 - Powertrain Data Bus
79-00 - Please Check Fault Codes

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8E2.lbl
Part No: 8E0 907 279 F
Component: int. Lastmodul RDW 0517
Coding: 01011
Shop #: WSC 63251
VCID: 356A2B360FBDA7EE72-4ACE

1 Fault Found:
01312 - Powertrain Data Bus
79-00 - Please Check Fault Codes

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8E0-959-655-84.lbl
Part No: 8E0 959 655 B
Component: Airbag 8.4EP 2000
Coding: 0010702
Shop #: WSC 63351 000 00000
VCID: 36682C3A42BBACF67B-50E6

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 N
Component: Lenksáulenmodul 0308
Coding: 00042
Shop #: WSC 63251
VCID: 3E78341A3A8B64B6A3-4ACE

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8E2.lbl
Part No: 8E0 920 980 L
Component: KOMBI+WEGFAHRS. RB4 D36
Coding: 01401
Shop #: WSC 00010
VCID: 356A2B360FBDA7EE72-5102
WAUZZZ8E43A329927 AUZ6Z0C0013263

1 Fault Found:
01316 - ABS Control Module
49-00 - No Communications

-------------------------------------------------------------------------------
Address 37: Navigation Labels: 8E0-035-192-RNSE.clb
Part No SW: 8E0 035 192 Q HW: 8E0 035 192 Q
Component: RNS-E HIGH EU H74 0650
Revision: 04S Serial number: AUZBZ7G0048014
Coding: 0309713
Shop #: WSC 06335 000 00000
VCID: 3260102AAED3B0D657-5120

1 Fault Found:
01316 - ABS Control Module
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 161
Time Indication: 0
Date: 2002.02.23
Time: 20:29:19

Freeze Frame:
Bin. Bits: 0010
Mileage: 655350 km
Count: 2302
Clock: 20:29

-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 8E0-951-177.lbl
Part No: 8E0 951 177
Component: Innenraumueberw. 0604
Coding: 00001
Shop #: WSC 00000
VCID: 6BDECD4E1979211E54-5120

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels:. 8E0-959-433-MAX.clb
Part No: 8E0 959 433 BC
Component: Komfortgerát T3B 1211
Coding: 07115
Shop #: WSC 63351
VCID: 73EED52E4149F9DE9C-4ACE

Subsystem 1 - Part No: 8E2959802
Component: Tõrsteuer.FS BRM 0002

Subsystem 2 - Part No: 8E2959801
Component: Tõrsteuer.BF BRM 0002

Subsystem 3 - Part No: 8E0959801A
Component: Tõrsteuer.HL BRM 0003

Subsystem 4 - Part No: 8E0959802A
Component: Tõrsteuer.HR BRM 0003

1 Fault Found:
01134 - Alarm Horn (H12)
49-00 - No Communications

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4Z7-907-357.lbl
Part No: 4Z7 907 357
Component: dynamische LWR D09
Coding: 00060
Shop #: WSC 63351
VCID: 040C86F214E7CE66B5-4ACE

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-192-RNSE.clb
Part No SW: 8E0 035 192 Q HW: 8E0 035 192 Q
Component: RNS-E HIGH EU H74 0650
Revision: 04S Serial number: AUZBZ7G0048014
Coding: 0309713
Shop #: WSC 06335 000 00000
VCID: 3260102AAED3B0D657-5120

1 Fault Found:
01316 - ABS Control Module
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 5
Fault Frequency: 1
Reset counter: 161
Time Indication: 0
Date: 2002.02.23
Time: 20:29:19

Freeze Frame:
Bin. Bits: 0010
Mileage: 655350 km
Count: 2302
Clock: 20:29

-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 8Z0-919-283.lbl
Part No: 8Z0 919 283 A
Component: Parkingsyst. A4 RDW D09
Coding: 00114
Shop #: WSC 63351
VCID: 438E45EE5169095ECC-50E6

1 Fault Found:
00625 - Vehicle Speed Signal
27-00 - Implausible Signal

-------------------------------------------------------------------------------
Address 77: Telephone Labels: 8P0-862-335.lbl
Part No SW: 8P0 862 335 AA HW: 8P0 862 335 S
Component: FSE_256x BT H34 0600
Revision: 00000000 Serial number: 00000005128365
Coding: 0010722
Shop #: WSC 00000 000 00000
VCID: 75EAEB361F3DE7EEB2-50E6

No fault code found.

**rowdy-999** · 18-02-2018,07:58 AM

Water in the scuttle area? Blocked drains? Water logged relays under the ECU?

**shinyblueS4** · 18-02-2018,01:40 PM

Thanks for the suggestions.
ECU box is bone dry inside. Not entirely sure about scuttle and drains. Can you confirm where specifically to look please?
Cheers.

**rowdy-999** · 18-02-2018,04:08 PM

Under the where the battery sits

**shinyblueS4** · 18-02-2018,04:50 PM

OK, checked under the battery and it's dry. No standing water.
I'm concerned that the parking assist is showing a speed error. Any idea how to unplug parking assist to eliminate that from the problem?

**nevo** · 20-02-2018,06:10 PM

When you changed the abs module have you got the correct coding installed?

**shinyblueS4** · 20-02-2018,07:57 PM

VCDS can't communicate with the ABS module (old one and new one) so I can't code it.

**nevo** · 20-02-2018,08:33 PM

Enter the abs module on vcds do you get the small bar spinning in the top lefthand side,does it say anything in the coding i.e all zero's.

**shinyblueS4** · 20-02-2018,08:58 PM

Can't remember exactly. Will try again tomorrow and report back.

**nevo** · 20-02-2018,09:17 PM

Did you fit a new abs module or used /repaired unit.

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