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Old 02-10-2013, 06:45 AM   #1
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Default Doors Locking by themselves draining battery

Hi All, I have strange one! when I shut my driver's door and walk away, the interior light will go off after about 30 seconds (normal so far) but then all the doors will lock by themselves. After this happens the door lock switch light comes on, it will go off after another 30 seconds, then doors will then lock again (although already locked). It will keep doing this until the battery becomes flat, not good when I go to my car and it's dead as a dodo. Another thing to point out is a few weeks back the alarm kept going off whilst driving, this is why I don't lock the car now. Also both the fobs have stopped working at the same time, so have to unlock car with key to gain access, any help would be appreciated.
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Old 02-10-2013, 07:18 AM   #2
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Sounds like the central locking or alarm control modules are flaky. Have you plugged in a scan tool to see if there are any errors?
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Old 02-10-2013, 07:51 AM   #3
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Thanks for your reply Kris, I have just scanned it with VAG-COM and am getting the following errors

VAG-COM Version: Release 409.1-S


Chassis Type: 8E - Audi A4 B6
Scan: 01,02,03,08,09,15,16,17,26,36,37,45,46,55,56,63,76

-------------------------------------------------------------------------------
Address 01: Engine
Controller: 8E0 907 557
Component: 2.0L R4/5VS 0006
Coding: 0011501
Shop #: WSC 00999
No fault code found.
Readiness: 0110 0101

-------------------------------------------------------------------------------
Address 03: ABS Brakes
Controller: 8E0 614 517
Component: ABS/ESP front D1320
Coding: 04275
Shop #: WSC 06435
2 Faults Found:
01826 - Sensor for Steering Angle (G85): Supply Voltage Terminal 30
35-00 - -
01206 - Signal for Duration of Ignition: OFF
27-10 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC
Controller: 8E0 820 043
Component: A4 Klimaautomat 0408
Coding: 00000
Shop #: WSC 63351
3 Faults Found:
00604 - Potentiometer Positioning Motor for Air Flow Flap (G113)
30-10 - Open or Short to B+ - Intermittent
00532 - Supply Voltage B+
53-10 - Supply Voltage Too Low - Intermittent
01330 - Central Control Module for Central Convenience (J393)
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 09: Cent. Elect.
Controller: 8E0 907 279 B
Component: int. Lastmodul RDW 1412
Coding: 00001
Shop #: WSC 63351
1 Fault Found:
01330 - Central Control Module for Central Convenience (J393)
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Skipping Address 15-Airbags

-------------------------------------------------------------------------------
Address 16: Steering wheel
Controller: 8E0 953 549 F
Component: Lenksáulenmodul 0302
Coding: 00011
Shop #: WSC 63351
3 Faults Found:
00532 - Supply Voltage B+
53-10 - Supply Voltage Too Low - Intermittent
01331 - Door Control Module: Driver Side (J386)
49-10 - No Communications - Intermittent
01330 - Central Control Module for Central Convenience (J393)
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 17: Instruments
Controller: 8E0 920 950 D
Component: KOMBI+WEGFAHRS. RB4 D12
Coding: 00400
Shop #: WSC 00216
WAUZZZ8EZ1A056994 AUZ6Z0A0082938
3 Faults Found:
01330 - Central Control Module for Central Convenience (J393)
49-10 - No Communications - Intermittent
01334 - Door Control Module: Rear Right (J398)
49-10 - No Communications - Intermittent
01333 - Door Control Module: Rear Left (J388)
49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 45: Inter. Monitor
Controller: 8E0 951 177
Component: Innenraumueberw. 0503
Coding: 00001
Shop #: WSC 00000
2 Faults Found:
01463 - Alarm triggered by Sensor for anti-theft alarm System
43-00 - Closed
01462 - Anti-theft alarm ultra sonic Sensor (G209)
27-10 - Implausible Signal - Intermittent

-------------------------------------------------------------------------------
Address 46: Central Conv.
Controller: 8E0 959 433 AC
Component: Komfortgerát T9F 0313
Coding: 06859
Shop #: WSC 63351
18 Faults Found:
01330 - Central Control Module for Central Convenience (J393)
53-10 - Supply Voltage Too Low - Intermittent
01616 - Signal Wire to Interior Monitor
28-10 - Short to B+ - Intermittent
01370 - Alarm triggered by Interior Monitoring
35-00 - -
00962 - Alarm via. Tilt Sensor
35-00 - -
01368 - Alarm triggered by Luggage Compartment Switch
35-00 - -
01369 - Alarm triggered by Hood Switch
35-00 - -
01374 - Alarm triggered by Terminal 15
35-00 - -
01371 - Alarm triggered by Door Contact Switch: Driver's Side
35-00 - -
01572 - Alarm triggered by Door Contact Switch: Passenger Side
35-00 - -
01574 - Alarm triggered by Door Contact Switch: Right Rear
35-00 - -
01573 - Alarm triggered by Door Contact Switch: Left Rear
35-00 - -
01384 - Alarm triggered by Glass Breakage Sensor
35-00 - -
00912 - Window Regulator Switch: Front Left (E40)
27-10 - Implausible Signal - Intermittent
00913 - Window Regulator Switch: Front Right Driver (E81)
27-10 - Implausible Signal - Intermittent
01559 - Drivers Door
58-10 - Can't Lock - Intermittent
01564 - Interior Lock Switch: Driver Side (E151): Unlock
27-10 - Implausible Signal - Intermittent
01331 - Door Control Module: Driver Side (J386)
49-10 - No Communications - Intermittent
01332 - Door Control Module: Passenger Side (J387)
49-10 - No Communications - Intermittent
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Old 02-10-2013, 08:00 AM   #4
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Would just like to add that today I unplugged the connector from the Driver's door to the car to check there were no broken wires, I couldn't find any broken ones, but thought I'd mention it as that might be why the results of vag-com show no communication...
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Old 02-10-2013, 08:32 AM   #5
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after plugging it back in, did the strange behavior continue?
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Old 02-10-2013, 12:34 PM   #6
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Yep it is still playing up after reconnecting the door connector. After clearing all the codes, there are no codes relating to the issue (just abs steering sensor, and radio amplifier open circuit).
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Old 02-11-2013, 04:15 AM   #7
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Since you hav ea ton of faults logged against the CCM, try pulling the fuse on the CCM and see if it continues. There are 2 of them and don't know the numbers off the top of my head.
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Old 02-11-2013, 08:36 AM   #8
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I have to disconnect the battery each night so it is not flat in the morning, this would be the same as taking the fuses out right?
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Old 02-11-2013, 12:29 PM   #9
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Yes, but I was trying to use the fuses to isolate directly to the CCM.

I went through a draining battery recently and was able to narrow it down to the radio, interestingly enough. I systematically unplugged fuses and then measured the amperage at the battery. I was running about 5 amps until I pulled the fuse on the radio. It dropped to milliamps; can't remember exactly the number. My son is now running around without a radio; hoping to find a gently used one on the internet, but struggling to see if a 8E0 035 195F is compatible with an 8E0 035 195H.
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Last edited by lyleswk; 02-12-2013 at 04:03 AM.
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Old 02-12-2013, 03:34 AM   #10
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I've pulled the fuse out for the CCM (It was a 30amp fuse is socket 24) The doors now doesn't automatically lock, and the little lock light on the driver's door in no longer coming on. Which is great as I don't have to fiddle around with the battery every time I stop. Take it I need a new CCM then?
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Old 02-12-2013, 03:34 AM
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a2, a4, audi, b5, b6, battery, central, convenience, doors, drain, draining, front, left, locking, message, module, motor, system, unlock, window


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