A3 3.2 Door Locking Mech Preventing Fuel Pump Prime

[Mickey_Steele]

Hi guys and girls.

I am a newbie to this forum so please go easy on me ;-). Anyway, I have Google the beejesus out of this and it has beaten me.

Okay...I have a 2004 A3 3.2 Quattro Sport S-Line. It has been a great car for 3 years for me...until...I sat it up for a few months leading up to Christmas and when I went out to it one day, it wouldn't start...battery was flat. Ah...I hear you say...of course it's flat if it's been sat up for a couple of months...but no...it has sat for 6 months before and fired up first time. And the type of flat I am talking about is dead as a dodo...not a light or show of any form of electrical life at all. Charged the battery and car started fine and then the rainy times came and the car would start if it felt like it

The car has had several electrical fault codes pop up on my VCDS (see below) but I do not know if they are related as, to be fair, the ones relating to the HVAC have been there for as long as I have had the car.

Anyway, before I go off on too much of a tangent, I noticed that the fuel pump wasn't priming and I couldn't get the car to start for a few weeks but wasn't concerned as I have other vehicles so I disconnected the battery to prevent it draining. Then one day as I shut the drivers door after having another look at the situation, I heard the fuel pump prime which made me think the car would then start...which it did...as did the 2 effin rad fans as well. A bit of research into the rad fans tells me it's a common thing so I disconnected the big 80amp fuse in the engine bay in order that I when I switched the engine off, the fans wouldn't run forever.

Next, I looked into the door locking microswitch scenario;

Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN1.lbl
Part No: 8P0 959 801 A
Component: Tuersteuerger. H10 0010
Coding: 0000048
Shop #: WSC 06435 000 00000
VCID: 397947827098B88AA7-806C

3 Faults Found:
01030 - Central Locking Key Switch; Driver Side; Lock
008 - Implausible Signal
00096 - Drivers Door Central Locking (Safe) Motor (V161)
012 - Electrical Fault in Circuit
00928 - Locking Module for Central Locking; Front Driver Side (F220)
008 - Implausible Signal

Now the car won't start at all so what I am wondering is does anyone know if failed microswitches in the lock will prevent the fuel pump from priming as I have heard 2 different and very valid views. After extensive research on forums here and in the States, a lot of people were saying that the fuel pump needs to have seen a signal for the door opening and it will prime the fuel pump...and then a Mechanic at a local garage tells me he has never heard of a faulty door mech preventing a vehicle from starting. Any advice is gratefully received as I am running round in circles with this and getting nowhere. Apologies for the structure of my thread...I am afraid I am not au fait with forum etiquette. Many thanks

[Mickey_Steele]

VIN: WAUZZZ8P34A149809 License Plate:


Chassis Type: 8P (1K0)
Scan: 01 02 03 08 09 15 16 17 19 22 25 42 44 46 52 56

VIN: WAUZZZ8P34A149809 Mileage: 214500km-133284miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 1010
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
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine Labels: 022-906-032-BDB.lbl
Part No SW: 022 906 032 CB HW: Bas isX 3
Component: MOTRONIC ME7.1.1G 8088
Revision: 00000000 Serial number: AUX7Z0D2FN10MS
Coding: 0000178
Shop #: WSC 00565 210 61806
VCID: 4D910352D410342A1B-8018

1 Fault Found:
18080 - Coolant Fan Control 1
P1672 - 004 - Open or Short to Ground - MIL ON
Readiness: 0110 1001

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 02E-927-770.clb
Part No SW: 02E 300 046 D HW: 02E 927 770 L
Component: GSG DSG 0606
Revision: 03149888 Serial number: 00000402250075
Coding: 0000020
Shop #: WSC 06435 000 00000
VCID: 183FA2062B52818278-804C

No fault code found.

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Address 03: ABS Brakes Labels: 1K0-907-379-MK60-A.lbl
Part No: 1K0 907 379 E
Component: ESP ALLRAD MK60 0103
Coding: 0021128
Shop #: WSC 06435 000 00000
VCID: 346776B657FA45E274-8060

No fault code found.

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Address 08: Auto HVAC Labels: 8P0-820-043.lbl
Part No SW: 8P0 820 043 G HW: 8P0 820 043 G
Component: KlimavollautomatH12 0150
Revision: 001954 Serial number: 8P0820043G
Shop #: WSC 00000 000 00000
VCID: 306F7AA6A3E279C210-8064

5 Faults Found:
01272 - Positioning Motor for Central Flap (V70)
003 - Mechanical Failure - Intermittent
Freeze Frame:
Fault Status: 00100011
Fault Priority: 3
Fault Frequency: 6
Reset counter: 67
Mileage: 213361 km
Time Indication: 0
Date: 2019.09.26
Time: 18:03:46

Freeze Frame:
Voltage: 13.90 V
Temperature: 11.0°C
(no units): 25.0
(no units): 70.0
Temperature: 8.5°C

00532 - Supply Voltage B+
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 1
Fault Frequency: 1
Reset counter: 68
Mileage: 214498 km
Time Indication: 0
Date: 2019.11.01
Time: 18:42:00

Freeze Frame:
Voltage: 9.00 V

01274 - Air Flow Flap Positioning Motor (V71)
003 - Mechanical Failure - Intermittent
Freeze Frame:
Fault Status: 00100011
Fault Priority: 3
Fault Frequency: 5
Reset counter: 68
Mileage: 214240 km
Time Indication: 0
Date: 2019.10.21
Time: 00:18:48

Freeze Frame:
Voltage: 13.80 V
Temperature: 10.0°C
(no units): 168.0
(no units): 35.0
Temperature: 8.5°C

00710 - Defroster Flap Positioning Motor (V107)
003 - Mechanical Failure - Intermittent
Freeze Frame:
Fault Status: 00100011
Fault Priority: 3
Fault Frequency: 1
Reset counter: 63
Mileage: 214240 km
Time Indication: 0
Date: 2019.10.21
Time: 02:47:34

Freeze Frame:
Voltage: 14.10 V
Temperature: 15.5°C
(no units): 26.0
(no units): 225.0
Temperature: 8.5°C

00716 - Air recirculation Flap Positioning Motor (V113)
003 - Mechanical Failure
Freeze Frame:
Fault Status: 01100011
Fault Priority: 3
Fault Frequency: 3
Reset counter: 29
Mileage: 214502 km
Time Indication: 0
Date: 2020.01.08
Time: 00:00:13

Freeze Frame:
Voltage: 13.80 V
Temperature: 12.0°C
(no units): 205.0
(no units): 38.0
Temperature: 8.5°C


-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8P0-907-279-23-H.lbl
Part No SW: 8P0 907 279 A HW: 8P0 907 279 A*
Component: Bordnetz-SG 1.0 H30 0501
Revision: 00030000 Serial number: 00000000626744
Coding: 018CCF01A0141000000000000000000000
Shop #: WSC 00000 000 00000
VCID: 3B755D8A7AA48A9AB5-806E

Subsystem 1 - Part No: 8P2 955 119 C Labels: 1TX-955-119.CLB
Component: Wischer WWS Audi350 0180
Coding: 16711696
Shop #: WSC 00000

2 Faults Found:
02394 - Parking Light Left Front (M1)
012 - Electrical Fault in Circuit
02395 - Parking Light Front Right (M3)
012 - Electrical Fault in Circuit

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8P0-959-655-84.lbl
Part No SW: 8P0 959 655 D HW: 8P0 959 655 D
Component: Airbag 8.4ED H00 0140
Coding: 0411602
Shop #: WSC 06435 000 00000
VCID: 4385256A0254F25AFD-8016

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 8P0-953-549.lbl
Part No SW: 8P0 953 549 HW: 8P0 953 549
Component: Lenksäulenmodul H11 0020
Coding: 0011142
Shop #: WSC 06435 000 00000
VCID: 7BF59D8A3A244A9AF5-802E

Subsystem 1 - Part No: XXXXXXXXXXX
Component: Lenkradmodul H03 0040

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 8P0-920-xxx-17-MY7.lbl
Part No SW: 8P0 920 980 J HW: 8P0 920 980 J
Component: KOMBIINSTR. VDO H25 0140
Revision: D09 Serial number: 2242DD09005543
Coding: 0001401
Shop #: WSC 00565 067 57207
VCID: 3E73549E69B69FB292-806A

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 1K0-907-530-V1.clb
Part No SW: 1K0 907 530 D HW: 1K0 907 951
Component: Gateway H08 0100
Revision: 08 Serial number: 250010421902AB
Coding: BF0F0340070101
Shop #: WSC 06435 000 00000
VCID: 285F92C69B323102C8-807C

2 Faults Found:
00469 - Infotainment Databus in Single Wire Operation
012 - Electrical Fault in Circuit - Intermittent
Freeze Frame:
Fault Status: 00101100
Fault Priority: 3
Fault Frequency: 3
Reset counter: 69
Mileage: 214502 km
Time Indication: 0
Date: 2020.01.07
Time: 23:37:21

00457 - Control Module for Network (J519)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 69
Time Indication: 0
Date: 2020.01.08
Time: 02:48:15


-------------------------------------------------------------------------------
Address 22: AWD Labels: 1K0-907-554.lbl
Part No: 1K0 907 554
Component: HALDEX 4Motion 0101
Coding: 0000001
Shop #: WSC 00000 000 00000
VCID: 6ADBA8CE45BEC3121E-803E

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
Part No SW: 8P0 920 980 J HW: 8P0 920 980 J
Component: KOMBIINSTR. VDO H25 0140
Revision: D09 Serial number: AUX7Z0D2FN10MS
Shop #: WSC 00000 000 00000
VCID: 3E73549E69B69FB292-806A

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN1.lbl
Part No: 8P0 959 801 A
Component: Tuersteuerger. H10 0010
Coding: 0000048
Shop #: WSC 06435 000 00000
VCID: 397947827098B88AA7-806C

3 Faults Found:
01030 - Central Locking Key Switch; Driver Side; Lock
008 - Implausible Signal
00096 - Drivers Door Central Locking (Safe) Motor (V161)
012 - Electrical Fault in Circuit
00928 - Locking Module for Central Locking; Front Driver Side (F220)
008 - Implausible Signal

-------------------------------------------------------------------------------
Address 44: Steering Assist Labels: 1Kx-909-14x-44.clb
Part No: 1K2 909 144 F
Component: EPS_ZFLS Kl.10 1301
Shop #: WSC 00000 000 00000
VCID: 2F6D79DABEDC663A09-807A

2 Faults Found:
00778 - Steering Angle Sensor (G85)
000 - -
00750 - Warning Lamp
013 - Check DTC Memory - Intermittent
Freeze Frame:
Mileage: 4480 km
Temperature: 8.0°C
Voltage: 11.70 V
Voltage: 11.60 V


-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8P0-959-433.lbl
Part No: 8P0 959 433
Component: KSG H02 0040
Coding: 008800186D288505485AC63000
Shop #: WSC 06435 000 00000
VCID: 79F987823018788AE7-802C

Subsystem 1 - Component: Sounder No Answer

Subsystem 2 - Part No: 1K0 907 719
Component: Neigungssensor 003 0003

Subsystem 3 - Part No: 8P0 951 177
Component: Innenraumueberw.H03 0010

2 Faults Found:
00457 - Control Module for Network (J519)
004 - No Signal/Communication
01134 - Alarm Horn (H12)
004 - No Signal/Communication

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. Labels: 8P0-959-802-MIN1.lbl
Part No: 8P0 959 802 A
Component: Tuersteuerger. H10 0010
Coding: 0000048
Shop #: WSC 06435 000 00000
VCID: 3A7B588E759EB392AE-806E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8P0-035-1xx-56.lbl
Part No SW: 8P0 035 195 HW: 8P0 035 195
Component: symphony II EU H56 0410
Revision: 20S Serial number: AUZ5Z4D5392122
Coding: 0000201
Shop #: WSC 06435 000 00000
VCID: 6FEDB9DA7E5C263A49-803A

No fault code found.

End-------------------------(Elapsed Time: 01:54)--------------------------

[Mickey_Steele]

Well...my reservation about joining a bunch of muggy forum bellends has proved well founded. Moderator please close my account. This is a bunch of useless *****.

[VAG-Abound]

Not sure why you're so keen to take that view less than a day after asking a short question with a lot of words.

I'd have to check, but doesn't VCDS have an option to test the fuel pump prime? If that works then I think ECU isn't getting the signal to tell it someone is about to try and start the car, which may come from driver door. I'd have to repeat various research you've already done to try and figure out if the specific model uses that approach.

Do lights come on when you open door? That's often the same signal being used by CCU and ECU to trigger lights, priming, etc. If lights come on and VCDS test of priming doesn't work I'd say it is primer control electrucs ratger than door signal.

Personally I'd replace door lock or control module to clear those errors anyway and see if it fixes priming issue.