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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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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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 |
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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after plugging it back in, did the strange behavior continue?
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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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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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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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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. |
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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