S4 Cabby cutting out

Andy27168

Registered User
Hi Guys,
Not been on here for a while mainly due to the Audi's running well but I have had an issue with the S4 Cab which I have been lending a friend.
The car is an 2005 S4 Cab that has now covered 61k miles, have owned it approx. 2 years during that time has never missed a beat.
The fault cuts the engine out whilst driving and can occur under load or not under load, even idling whilst parked. Engine just cuts out, stereo remains playing etc. and the car will immediately restart with no problem, it seems to be getting worse and re-occurs after 2-3 miles.
The car has had a low battery but not low enough to require it needing to be charged or jump started.
I have VCDS and have run a scan which I will post at the end of this post.
It has been away with a mechanic and he has apparently replaced to of the relays which he was convinced would sort the issue, and believes he has eliminated the ignition switch as the issue, but the car is still the same.
The ECU and the cluster has been sent away with the key, as the codes appeared to be pointing at one or other being faulty, but they have come back stating that they are unable to test as the ECU has been chipped and they were not prepared to plug it in as the last time they did something like this it damaged their computer system.
Any ideas?

Sunday,01,March,2015,14:43:36:54875
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 14.10.0.0
Data version: 20141022


VIN: WUAZZZ8H05K900391 License Plate: S40 JHP 01/03/2015
Mileage: 101540km-63094mi Repair Order:



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


Chassis Type: 8H (8H - Audi Cabrio B6/B7 (2003 > 2009))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 26 36 37 45 46 55 56 57
63 65 67 73 75 76 77

VIN: WUAZZZ8H05K900391 Mileage: 101540km-63094miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: 079-910-560-BBK.lbl
Part No SW: 8H0 910 560 HW: 8E0 907 560
Component: 4.2L V8/5V G 0020
Coding: 0011714
Shop #: WSC 00672 785 00200
VCID: 65C7FEBDAFB79D09FCD-5160

2 Faults Found:
18010 - Power Supply Terminal 30
P1602 - 002 - Voltage too Low - Intermittent
16988 - Internal Control Module
P0604 - 008 - RAM Error - Intermittent
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-614-517.lbl
Part No: 8E0 614 517 Q
Component: ABS/ESP allrad 4533
Coding: 04595
Shop #: WSC 12345
VCID: 366569F112912691857-5124

1 Fault Found:
18258 - Powertrain Data Bus
P1850 - 35-10 - Missing Message from ECU - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 AC
Component: A4 Klimaautomat 1424
Coding: 00100
Shop #: WSC 00672
VCID: 62CDE5A1EE99EA3119F-5160

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8E2.lbl
Part No: 8E0 907 279 F
Component: int. Lastmodul RDW 0517
Coding: 00011
Shop #: WSC 00672
VCID: 35676EFD0F972D898CD-4B38

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8H0-959-655-84.lbl
Part No: 8H0 959 655 D
Component: Airbag 8.4EC 0015
Coding: 0010104
Shop #: WSC 00672 785 00200
VCID: 3B7378C579B3FBF97A9-5160

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8E0-953-549.lbl
Part No: 8E0 953 549 Q
Component: Lenksáulenmodul 0601
Coding: 01041
Shop #: WSC 06314
VCID: 418F0A2D4B5F9129205-4B20

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8E0-920-9xx-8E2.lbl
Part No: 8H0 920 980 L
Component: KOMBI+WEGFAHRS. RB4 D22
Coding: 01401
Shop #: WSC 00222
VCID: 387967C91885D0E197B-5160
WUAZZZ8H05K900391 AUZ6Z0D0153796

1 Fault Found:
01314 - Engine Control Module
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 26: Auto Roof Labels: 8H0-959-255.lbl
Part No: 8H0 959 255
Component: VSG B6 CABRIO 6386
Shop #: WSC 00672 785 00200
VCID: 73E390E5116373B9629-5160

No fault code found.

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

Address 37: Navigation Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8E0 035 192 C HW: 8E0 035 192 C
Component: RNS-E HIGH EU H58 0660
Revision: 11S Serial number: AUZBZ7F0431800
Coding: 0413153
Shop #: WSC 76091 146 85162
VCID: 2441A3B9E40DA4012B3-519A

1 Fault Found:
00858 - Connection; Radio Intermediate Frequency (IF) Output to Antenna Amplifier
011 - Open Circuit
Freeze Frame:
Fault Status: 01101011
Fault Priority: 5
Fault Frequency: 2
Reset counter: 44
Time Indication: 0
Date: 2014.03.29
Time: 12:04:53

Freeze Frame:
Mileage: 655350 km
Count: 1612
Clock: 19:11


-------------------------------------------------------------------------------
Address 45: Inter. Monitor Labels: 8E0-951-177.lbl
Part No: 8H0 951 178
Component: Innenraumueberw. 0411
Coding: 00001
Shop #: WSC 00000
VCID: 6FEB9C952D4B5759861-5142

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8E0-959-433-MAX.lbl
Part No: 8H0 959 433 F
Component: Komfortgerát T3B 3320
Coding: 07915
Shop #: WSC 00672
VCID: 377B64F5159BDF999E1-4B38

Subsystem 1 - Part No: 8H2959802B
Component: Tõrsteuer.FS BRM 3020

Subsystem 2 - Part No: 8H2959801D
Component: Tõrsteuer.BF BRM 0205

Subsystem 3 - Part No: 8H0959801A
Component: Tõrsteuer.HL BRM 0002

Subsystem 4 - Part No: 8H0959802A
Component: Tõrsteuer.HR BRM 0002

2 Faults Found:
00934 - Electric Window Motor; Rear Left (V26)
62-10 - No or Incorrect Adjustment - Intermittent
00935 - Electric Window Motor; Rear Right (V27)
62-10 - No or Incorrect Adjustment - Intermittent

-------------------------------------------------------------------------------
Address 55: Headlight Range Labels: 4Z7-907-357.lbl
Part No: 4Z7 907 357
Component: dynamische LWR D09
Coding: 00070
Shop #: WSC 00672
VCID: 0401C33914CD44014B3-4B52

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8E0 035 192 C HW: 8E0 035 192 C
Component: RNS-E HIGH EU H58 0660
Revision: 11S Serial number: AUZBZ7F0431800
Coding: 0413153
Shop #: WSC 76091 146 85162
VCID: 2441A3B9E40DA4012B3-519A

1 Fault Found:
00858 - Connection; Radio Intermediate Frequency (IF) Output to Antenna Amplifier
011 - Open Circuit
Freeze Frame:
Fault Status: 01101011
Fault Priority: 5
Fault Frequency: 2
Reset counter: 44
Time Indication: 0
Date: 2014.03.29
Time: 12:04:53

Freeze Frame:
Mileage: 655350 km
Count: 1612
Clock: 19:11


-------------------------------------------------------------------------------
Address 63: Entry Assist,D Labels: None
Part No: 8H0 959 760 A
Component: EasyEntry F H13 0010
Coding: 00005
Shop #: WSC 00065
VCID: 35676EFD0F972D898CD-4B20

No fault code found.

-------------------------------------------------------------------------------
Address 73: Entry Assist, P Labels: None
Part No: 8H0 959 760 A
Component: EasyEntry BF H13 0010
Coding: 00005
Shop #: WSC 00065
VCID: 35676EFD0F972D898CD-4B20

No fault code found.

End-------------------------(Elapsed Time: 06:00)--------------------------
 

b16 will

Registered User
First thing that springs to mind in my experience of a car cutting out, even with no stored codes is crank and/or camshaft sensors. They have a habit of looseing signal and will cut the car and usualy restart.
 

Andy27168

Registered User
I must admit I considered this but these sensors normally cut the engine out when warm and once left to cool let the car restart, but this one restarts every time immediately after it dies, and will cut out when the engine is still cold.
One of the codes that has thrown me is the rear window motors losing power.
I am getting the car back later this week so will clear all the codes and then run the engine till it cuts out and see if all these codes reoccur again.
 

Ovid

Registered User
Firstly check alternator output , if not that then next step is to see if Engine ECU has a vacuum feed to it some do some don't if it has then check the pipe for splits, next is check all connections on the plug on the ECU.
 
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