Hi everyone,
I have carried out a tailgate conversion on my T6. I followed the guide step by step on the forum. Super helpful guide !! I wired the loom as per guide etc. but I am pretty sure I made a mistake somewhere as I am now finally got round to the vcds and recoding i spent a little bit of time familiarising myself with the software. I have some really strange behaviour from the settings mentioned in the forum which seem to be working for other people. I’m just wondered if anyone else came across any similar issues or may have some suggestions. I followed this :
Coding
Now you need to tell the BCM that a tailgate is fitted and it needs to look for the switch signal.
Using VCDS, go to Module 9 Central Electrics and enable these.
Byte 01 Bit 5 Central Locking/Rear Lid: Contact controlled on detent
Byte 01 Bit 7 Central Locking/Rear Lid: Rear Lid Locking/Unlocking via Central Locking
Byte 07 Bit 5 Central Locking/Rear Lid: One-Motor-Lock installed
(This is from memory, hopefully someone can check it)
Now for me the handle external ie the soft touch switch has never worked. I’ve had to make do manually opening boot from catch inside.
So now finally open vcds software :
On vcds I checked measuring blocks section in module 9 to check I was getting the correct status when the tail gate is either open or closed, I checked ( group 006) in field 3 changes to open when tailgate is opened. Closed when closed. So the bsm knows the tailgates state and that seems correct to me ?
I can’t get any other section in group 006 to change status. In one section it says not installed where the images in the forum show open or closed As mentioned here :
VCDS monitors if the latch is fully engaged or not. Select Measuring Blocks Group 006:
Field 2, field 3 = "Open", "Open" = when rear lid fully open
Field 2, field 3 = "Closed", "Open" = when rear lid ajar (at first latch).
In the picture below the lid was obviously closed.
To check if the BCM is
getting the signal to open the lock, the statu
s shown in Group 008, field 4. Just indicates that the switch is pressed or not.
For me Group 008, field 4 doesn’t change status. If I press the external handle on the tailgate.
When I go to output tests and select Rear Lid Unlocking I can run the test. I am sure I even hear a relay click from bcm. But as photos show it briefly displays not ok then shows inactive and doesn’t unlock the boot. The test also doesn’t work if I open the tailgate.
Now I know the motor and actuator work in the tailgate to open it because strangely when and only if I open the tailgate manually so the latch is disengaged, when I press the unlock button on the key fob it then operates the actuator. At this point I am really puzzled. Have I got something back to front ? When I close the tailgate the unlock button on the key fob doesn’t open the tailgate.
When I check the fault codes section I get this but can’t find anyone else coming across this fault.
Fault code appears 00329 - control circuit for unlocking rear lid
Another issue which seems to arisen all of a sudden is if I tell the bcm I have rear left door the sliding door. It’s stuck on open and displays the door open light on dash and won’t go away unless I uncheck the option in the coding byte 7 bit 0
I’ve included some images of my config but if anyone has any ideas or further suggestions at all it be great to try a few new things. I am stumped