A4 Jetta Euro Trunk Latch

blizzard60

Veteran Member
Joined
Mar 18, 2009
Location
Vancouver, BC
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2004 Jetta Wagon
The hatch lock isn't in the "locked" position, right?! Also, have you touched your ccm with vds-pro? I promise you, the only physical changes I made to mine were the harness and the lock. What I cannot remember is if I had previously changed the coding for the rear hatch in vds-pro. Do you know anyone around you that has vds?
 

Mike_V

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Aug 13, 2010
Location
Santa Barbara, CA
TDI
2003 Jetta Wagon
The hatch lock isn't in the "locked" position, right?
"The hatch lock isn't in the "locked" position, right?!"

Could you please explain what you mean by this? Maybe (hopefully!) this is something very simple I neglected to do! I just swapped out the lock cylinder (is there some kind of setting on that I can adjust?), plugged in the new wiring harness, and found that the locking behavior seemed to be the same as before.

I haven't ever used VDS-Pro on the car and I don't believe the previous owner did either (certainly, remote rollup windows aren't enabled!). I found a thread on Vortex where some people briefly discussed this mod (will have to go digging to find it again) and they didn't mention VDS-Pro at all, just gave the two part numbers and said swapping them in made it work.
 

fitzski

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Joined
Oct 13, 2004
Location
Ottawa
TDI
Uh... hmm... Well, none...
"The hatch lock isn't in the "locked" position, right?!"
Could you please explain what you mean by this?
See image...
straight from my Bora owners manual...applys for Sedan/Estate and there is a difference in the wiring too guys besides year to year sedan vs estate ...like I said before the lock cylinder is also different
 

Mike_V

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Aug 13, 2010
Location
Santa Barbara, CA
TDI
2003 Jetta Wagon
Thanks for the diagram - the lock is in the vertical position (position "A"), so that doesn't appear to be the problem. I'm on the road at the moment but will check my CCM part number when I'm at home to see if that might potentially be an issue. I should be able to get access to VDS-Pro if necessary, but of course need to know what to change in order for it to be useful.

I don't currently have a good understanding of how the hatch lock signalling process works and don't seem to remember seeing one on the forums - does anyone have some insight that might help me e.g. test out the microswitch on the Euro lock cylinder to make sure it's operating properly?
 

blizzard60

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Location
Vancouver, BC
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2004 Jetta Wagon
Hey Mike,

I can give you the VDS values no problem. I'm really sorry that this didn't just work by plugging it all in. I PROMISE you, you will not need to buy any more parts, and once you are done with this mod you will NEVER AGAIN want to poke your eyes out with the stupid way the rear hatch was designed for north america!!!

Even IF the ccm was for some reason an issue, with VDS pro you can resolve it no prob.

Do you have anything else to install that you want the ccm coded for (DWA siren are controlled by same addresses).

Cheers,
-Chris
 

blizzard60

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Mar 18, 2009
Location
Vancouver, BC
TDI
2004 Jetta Wagon
BTW, do you still have all the hatch stuff off? Just to make sure, all the pins on the new harness matched up to pins/wires in the plug on the car side of the harness, right? My car is an '04, and I am 100% sure our cars should be wired the same, but just wanna make sure.

EDIT: Sorry, couple more questions. Does your tailgate "pop" when you hit the key fob or door switch? Also, can you operate your windows/other door locks from the hatch lock now?
 
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Mike_V

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Location
Santa Barbara, CA
TDI
2003 Jetta Wagon
Yes, all the wires on the new harness matched up fine (I didn't test the plug for the rear window defroster wires, but that shouldn't matter, right?) - everything plugged in the same except the connector for the lock cyinder microswitch being a black three-wire plug instead of an orange two-wire plug.

I don't have a key for the Euro lock cylinder, but it's possible to reach the little white toggle switch that gets activated by turning the key and I tried pushing it both ways - it did indeed operate the locks of the other doors in the car, though I didn't try holding it to operate the windows (whoops, would have been a good test).

When I hit the keyfob trunk button or the door switch with the Euro setup installed, the hatch doesn't "pop," it starts listening to the rubber door handle switch, and when that is pressed, *then* the lock pops open.

Thanks for the help - other then checking whether the windows can be rolled down via the hatch lock, anything else to try? Or is it time to track down VDS-Pro and start comparing EEPROM? I don't have any other components I'm looking to install the require CCM recoding at the moment, but as long as I'm going to hack the CCM I might as well activate the remote-operated windows!
 
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Mike_V

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Aug 13, 2010
Location
Santa Barbara, CA
TDI
2003 Jetta Wagon
After some VDS-Pro forum reading, looks like you found the VDS-Pro coding for the hatch "pop" before doing this wiring mod. Are you thinking that this coding might be necessary for this mod to work?
 

blizzard60

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Mar 18, 2009
Location
Vancouver, BC
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2004 Jetta Wagon
Hey Mike,

Nope hatch pop definitely CANCELS this, that is why I was POSITIVE this should work without VDS. I changed it back from the "pop" to make the "always live" hatch work!!

There's really no need to check the windows down, I'm sure it will work. It sounds like everything else is working, so why not the hatch?!?! Hmmm.

Do you have vag-com? If you do would you mind changing your alarm to uk or Europe/Germany? I highly doubt that will work, but they are all the same bytes in vds (hatch pop, DWA siren, alarm tone)...

I'm away for a week starting in about 4 hours. I'll be checking the forums periodically, but I won't have vds with me to check coding, sorry!!

Sorry I cannot give you a definitive answer! If you can wait though, I can tell you my coding which works 100%.

Cheers,
-Chris
 

ryanp

Vendor
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Jun 22, 2008
Location
Barnsley, South Yorkshire, UK
TDI
Arosa CR - 550hp - 9.7 @ 150mph 1/4 Mile, Citigo 4x4 CR TDi - 340hp, Caddy 2.0 CR 4x4 TDI - 300+hp, Golf Mk2 Van 1.9 TDI - was 290hp, Mk5 Ibiza 2.0 FR TDi - 270hp, BMW 135d - 360hp, BMW 330d - 335hp, BMW 335d - 380hp + a few more ........
My name is Ryan and I am an addict



Please help me.

PS - Sorry I have nothing informative to add to this!
 

Mike_V

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Aug 13, 2010
Location
Santa Barbara, CA
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2003 Jetta Wagon
Great suggestion, I do have VCDS, I'll try adjusting the CCM settings this weekend and see if that helps (I didn't fully install the harness and lock cylinder, just hooked everything up enough to test it). If no dice, then time to track down a VDS-Pro cable. Thanks again for your help!

Are there really no other wagon owners on the forum who have done this mod? We can't be the only ones who find the trunk lock "feature" to be an incredible PITA! And somebody needs to help Ryan get rid of those hatches!
 

Mike_V

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Joined
Aug 13, 2010
Location
Santa Barbara, CA
TDI
2003 Jetta Wagon
OK, just tried things out again, and need to correct what I said earlier (in my previous test I guess I wasn't watching closely, my mistake!):

The microswitch on the lock cylinder does lock all the other doors. However, when pushed in the opposite direction, it does not unlock the other doors, it only unlocks the hatch (like pushing the hatch button on the remote). When held, it does not operate the windows.

I did try changing the alarm setting to Germany and to UK, but it had no effect on the locking behavior.

Presumably whatever will enable the rear lock to operate windows, doors, etc. will also put it in the desired "always unlockable" mode. Any ideas?

Edit: CCM part number is 1C0 959 799 C, in case that matters.
 
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blizzard60

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Mar 18, 2009
Location
Vancouver, BC
TDI
2004 Jetta Wagon
Hey Mike, I'm back from my vacation. I really think you need your CCM read by VDS. I'm really sorry as I did NOT think it needed to be modified.

I will go back through my notes and try and find what my ORIGINAL (stock) values were and put those in and see if the hatch behaves the same as you are saying...

If you happen to get your CCM read, could you please post the values? I know what mine are currently.

Cheers,
-Chris
 

blizzard60

Veteran Member
Joined
Mar 18, 2009
Location
Vancouver, BC
TDI
2004 Jetta Wagon
Hey Mike,

Where you at with this? I've got lots of time now to get some VDS numbers for you if you'd like...

Cheers,
-Chris
 
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