Help needed - PDC controller upgrade - lost electric tailgate remote open

CDRX

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VIP Member
Hi all,

I have to admit defeat and tell you I'm close to getting desperate here. The reason why? I've upgraded the PDC on my T6 to 1K8 919 472 C in order to benefit from automatic activation when approaching obstacles from the front.

The problem is, that ever since then, I've lost the ability to open my factory fitted electric tailgate from the key fob as well as the button in the drivers door.

I've tried various adaptation setting of 6D, diverse codings of my PDC module, nothing works. I've also reverted back to the original module without any changes except unplugging the new module and plugging the old one in, the tailgate worked as expected (open and close).

The reason I'm getting desperate is that it seems others have had no such troubles and it works perfectly for them.

For reference, a discussion that's been had on this very forum a while ago: Side assist retrofit thread and attached a fairly recent autoscan (nothing changed since then).

Unfortunately, the suggestions did not yield any results and I'm about to restart trying all codings (adaptations are as suggested in the thread, confirmed that again yesterday).

Before I do that, I was wondering if there was a kind sould on here willing to help me investigate this, knowing my knowledge on all things VCDS and car electronics is very basic. Caveat is, I'm based in western Switzerland, so not exactly a stone's throw from the majority of power-users on here. I can provide remote access and am willing to reward adequately for this.

So I guess this is a bottle to the sea, hoping someone will be willing and able to help me get to the root cause of my problem.

Thanks for reading up to here and take care!
 

Attachments

Can you please clear all fault codes and post another fresh AUTOSCAN?
Also include adaptation map for your module 10 and 6D.
 
Ok, so cleared all faults, did a fresh autoscan and added the adaptation map for modules 10 & 6D. Crossing my fingers here...
 

Attachments

So I did a small modification to my wipers today and, as always, did a post-mod autoscan.

There is now a new fault regarding Parking Assist. Could this have anything to do with it?

Code:
12583424 - Powertrain Databus
          U0002 00 [00001000] - No Communications
          [Daten-Bus Antrieb - kein Signal/keine Kommunikation]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 36
                    Mileage: 115337 km
                    Date: 2025.02.22.
                    Time: 09:17:01

Full file attached.
 

Attachments

So I did a small modification to my wipers today and, as always, did a post-mod autoscan.

There is now a new fault regarding Parking Assist. Could this have anything to do with it?

Code:
12583424 - Powertrain Databus
          U0002 00 [00001000] - No Communications
          [Daten-Bus Antrieb - kein Signal/keine Kommunikation]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 36
                    Mileage: 115337 km
                    Date: 2025.02.22.
                    Time: 09:17:01

Full file attached.
The fault occurred on 22/02/2025 so happened before your mod.

It's probably prudent to do the autoscan before any mods rather than after
 
The fault occurred on 22/02/2025 so happened before your mod.

It's probably prudent to do the autoscan before any mods rather than after
Sorry, I was unclear. The fault has nothing to do with my modification whatsoever. I just noticed it today because I did the scan.

I always autoscan before and after, just that my last autoscan was last week and nothing's been changed between then and the time I did the mod today, so I didn't bother with the before this time
 
Ok, so cleared all faults, did a fresh autoscan and added the adaptation map for modules 10 & 6D. Crossing my fingers here...
Can you please try this coding
1933098003
on your Address 6D: Trunk Elect. (J605)
and report?
 
I did notice something yesterday. When I would try to open the rear lid with my previous coding, a relay could be heard clicking under the driver's seat. This is not the case anymore with Robert's suggested coding. Maybe I need to upgrade a relay or at least investigate the signals being sent out?
 
Got the boot to work. Coding issue with Towbar. Finally able to open it with the switch afyer 4 months! Sorry, not helpful for you in your cause. Any progress?
 
Got the boot to work. Coding issue with Towbar. Finally able to open it with the switch afyer 4 months! Sorry, not helpful for you in your cause. Any progress?
Interesting. Can you share the coding please?
 
Hi all,

I have to admit defeat and tell you I'm close to getting desperate here. The reason why? I've upgraded the PDC on my T6 to 1K8 919 472 C in order to benefit from automatic activation when approaching obstacles from the front.

The problem is, that ever since then, I've lost the ability to open my factory fitted electric tailgate from the key fob as well as the button in the drivers door.

I've tried various adaptation setting of 6D, diverse codings of my PDC module, nothing works. I've also reverted back to the original module without any changes except unplugging the new module and plugging the old one in, the tailgate worked as expected (open and close).

The reason I'm getting desperate is that it seems others have had no such troubles and it works perfectly for them.

For reference, a discussion that's been had on this very forum a while ago: Side assist retrofit thread and attached a fairly recent autoscan (nothing changed since then).

Unfortunately, the suggestions did not yield any results and I'm about to restart trying all codings (adaptations are as suggested in the thread, confirmed that again yesterday).

Before I do that, I was wondering if there was a kind sould on here willing to help me investigate this, knowing my knowledge on all things VCDS and car electronics is very basic. Caveat is, I'm based in western Switzerland, so not exactly a stone's throw from the majority of power-users on here. I can provide remote access and am willing to reward adequately for this.

So I guess this is a bottle to the sea, hoping someone will be willing and able to help me get to the root cause of my problem.

Thanks for reading up to here and take care!
Looking at you scan, it suggests that the central electric module thinks you have barn doors (and is giving faults). Is that correct or does it have a tailgate?

4 Faults Found:
03303 - Response Closing Status of Rear Left Door
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 7
Reset counter: 175
Mileage: 99053 km
Time Indication: 0
Date: 2018.04.15
Time: 07:55:31

03304 - Response Closing Status of Rear Right Door
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 174
Mileage: 99971 km
Time Indication: 0
Date: 2018.05.31
Time: 15:45:40
 
Sorry last post is probably a red herring as those faults cleared after your first scan posted.
Interesting approach, that would be quite implausible indeed. I do have a tailgate and closing with the remote or the switch does work 😂
 
Got the boot to work. Coding issue with Towbar. Finally able to open it with the switch afyer 4 months! Sorry, not helpful for you in your cause. Any progress?
Congrats! No progress on my end, but I will investigate this towbar avenue when I get some time. If you do get around to having an autoscan done with someone, I'd be very glad if you could share it.
Out of curiosity: how long did it take for the professional to figure it out?
 
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