Central locking not working via interior door switch. Locks but immediately unlocks!?

[thommo2408]

Hi all,

New to VW and hoping for some help!
I have a T6 startline 2017 panel van that I am starting to convert!

The auto locking function doesn't work when pulling off. Also, the interior drivers door switch locks the doors when pressed but immediately unlocks them??
Both front doors and tailgate lock via the remote but the sliding door doesn't, this has to be locked via the key in the barrel. Could this be preventing the system locking?
All door switched are registering through VCDS when its plugged in and are visible on the MFD screen.

I hope I have provided as much info as possible and that somebody has had a similar issue and can point me in some direction.

Thanks in advance,
Sean

 

[T6ChrisO]

Autolock has to be activated in the options (using VCDS, OBD11 etc). Apologies if thats obvious and you've already checked its ticked.

Cant help on the other issues sorry

 

[Pauly]

Id guess the microswitch in the sliding door is faulty/failing, the van needs the return signal from the door to know its locked
Not heard of it in rear doors before but have with the fronts

 

[Bundy88]

My 22-plate is switched to auto lock, but rarely does...seems to do it sometimes, but more than often doesn't!
Not tried investigating further yet...unless I'm missing something else I need to do to make it work apart from switching it on on the display??

 

[thommo2408]

Thanks for the replies! My issue is more with not being able to lock using the internal switch, I only mentioned the auto lock not working incase it was linked.

I will give @Pauly ‘s idea a looking at! Although I’m not convinced the locking mechanism is actuating or even attempting to when the central locking is activated using the internal switch or key fob!
So I’m assuming that ties in with the idea of no return signal?

Looks like I’m on the hunt for wiring diagrams now!

 

[DaveyB]

I have what is a very similar issue. It started out that when driving the doors would lock when reaching 10mph as I had turned the auto lock function on via Carista, however they would then unlock/lock/unlock/lock continually. To solve the issue I simply turned off the auto lock feature, as it wasn’t the end of the world. The van would still lock on the internal switch and on the key fob so was not too worried. Having been away camping in the van this last week the issue has now expanded in that I can’t lock the doors at night whilst sleeping inside by using the central locking switch, it locks but immediately unlocks all of the doors. The only way to combat it is to lock each of the doors individually via their knobs. Whilst the van still locks on the remote it is no longer deadlocking the doors. It is also a lottery as to what it’ll do when pressing unlock on the key fob. It is set for one press to unlock driver door and second press to unlock all other doors. Sometimes it will do what it is supposed to do, other times one press opens all of the doors.
I’m wondering if this is likely to be the door actuator switches as well, and if so, how hard are they to replace yourself? Looks like each switch is about £30 on fleabay. Haven’t scanned with Carista as to which door it says is giving an improbable signal yet as I need to resubscribe.

 

[Miguel Nian]

大家好，

刚接触大众汽车，希望得到一些帮助！
我有一辆 T6 startline 2017 厢式货车，我正在开始改装它！

停车时自动锁定功能不起作用。另外，按下内部驾驶员车门开关时会锁定车门，但立即解锁？？
前门和后挡板都可通过遥控器锁定，但滑动门不能，必须通过钥匙锁在钥匙筒中才能锁定。这会阻止系统锁定吗？
所有门开关在插入时都会通过 VCDS 注册，并在 MFD 屏幕上可见。

我希望我已经提供了尽可能多的信息，并且有人遇到过类似的问题并可以为我指明方向。

提前致谢，
肖恩

I am in the exact same situation as you, I can't lock the doors from inside the car and I don't know what to do?

 

[Littleblackflash]

I have the same issue, I can't lock the doors using the switches on the drivers door.

I think my fault started when I swapped the sliding door from a standard van door to a caravelle door. Is the wiring different?

Are there any measuring blocks in VCDS where I can see the condition of each door lock. I hope this may identify where my fault is.

 

[Pauly]

I have the same issue, I can't lock the doors using the switches on the drivers door.

I think my fault started when I swapped the sliding door from a standard van door to a caravelle door. Is the wiring different?

Are there any measuring blocks in VCDS where I can see the condition of each door lock. I hope this may identify where my fault is.

I think a standard fault scan will likely highlight the issue, normally a dodgy contact in the central locking motor ?

 

[Littleblackflash]

Scan done and it does show some faults.


Address 09: Cent. Elect. (J519) Labels:. 7E0-937-BCM-V1.clb
Part No SW: 7E0 937 090 HW: 7E0 937 090
Component: BCM PQ25 Max4 H80 0733
Revision: B9080001 Serial number: 0771 269151942
Coding: A0A8393A2A61349193284FF47CEA9EF4FFA070F960CC69603204003F0800
Shop #: WSC 02737 022 168835
VCID: 6889456E1279D47A271-803C

Subsystem 1 - Part No: 5K7 955 559 B Labels: 5K7-955-559.CLB
Component: RLS 081015 03 37 0059
Coding: 0228EE

Subsystem 2 - Part No SW: 7E0 959 801 K HW: 7E0 959 801 K Labels: 7E0-959-80X-V2.CLB
Component: J386__TSG_FT 003 8654
Serial number: KU0KU021091552648648
Coding: 1400B0

Subsystem 3 - Part No SW: 7E0 959 802 K HW: 7E0 959 802 K Labels: 7E0-959-80X-V2.CLB
Component: J387__TSG_BT 003 8654
Serial number: KU0KU023091552663179
Coding: 0400A0

Subsystem 4 - Part No: 7E1 951 172
Component: DWA-Sensor 00 001 0104
Coding: 000000

Subsystem 5 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501
Coding: 000000

Subsystem 6 - Part No: 7E1 951 172
Component: DWA-Sensor 00 001 0104
Coding: 000000

Subsystem 7 - Part No SW: 2H0 959 442 HW: 2H0 959 442 Labels: 3C8-959-537.CLB
Component: E221__MFL-DC1 H01 0103
Serial number: 29150001842700065392
Coding: A4FFFF

5 Faults Found:
03301 - Response Closing Status of Drivers Door
008 - Implausible Signal - Intermittent
03302 - Response Closing Status of Passenger's Door
008 - Implausible Signal - Intermittent
03303 - Response Closing Status of Rear Left Door
008 - Implausible Signal - Intermittent
00975 - Heated Rear Window (Z1)
012 - Electrical Fault in Circuit
02745 - Bulb for Daytime Running Light; Left
010 - Open or Short to Plus



So it's all doors except the tailgate? Sounds unusual to me. Van locks ok with the key, just not with the switch on the drivers door. Any ideas??

Heated rear window isn't connected and I do have a DRL light out.

 

[Pauly]

Clear them, bounce the locks again and rescan, hopefully just one door will come up

If poss i always recommend posting the full unedited auto scan (remove VIN up top if you want) then we can see all the details for each fault, freeze frame data helps to build a picture

 

[Littleblackflash]

Scanned the van again tonight. Codes didn't reappear during my drive to work.
Once I presses the button on the door top, these codes reappeared.

Wednesday,05,March,2025,20:10:30:41203
VCDS Version: Release 25.3.0 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 09: Cent. Elect. Labels: 7E0-937-BCM-V1.clb
Control Module Part Number: 7E0 937 090 HW: 7E0 937 090
Component and/or Version: BCM PQ25 Max4 H80 0733
Software Coding: A0A8393A2A61349193284FF47CEA9EF4FFA070F960CC69603204003F0800
Work Shop Code: WSC 02737 022 168835
VCID: 6889456E1279D47A271-803C
4 Faults Found:

03301 - Response Closing Status of Drivers Door
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 68
Mileage: 149341 km
Time Indication: 0
Date: 2043.14.01
Time: 20:10:36

03302 - Response Closing Status of Passenger's Door
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 68
Mileage: 149341 km
Time Indication: 0
Date: 2043.14.01
Time: 20:10:36

03303 - Response Closing Status of Rear Left Door
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 2
Fault Frequency: 2
Reset counter: 68
Mileage: 149341 km
Time Indication: 0
Date: 2043.14.01
Time: 20:10:36

So are the all duff, or is there a common link?

 

[Littleblackflash]

Any thoughts?

I tried locking the doors manually by pressing the door pins down, and then pressing the lock button. The locks don't bounce open, but I can press the button to open them.
I'm wondering if it's the coding? Did I change something when doing the barn door to tailgate conversion.