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Vw caddy mk3 tailgate conversion mk4

Posted: Sat Sep 27, 2025 10:36 pm
by Manc
Just got a mk4 tailgate.
I don't suppose anyone has the wiring diagram and also cos it a electrical opener on the mk4 can I code my key to unlock the boot. It basically just unlocks all the doors at the moment.
I don't need wiring for wiper or heating screen. Just for brake light, number plate lights and lock. I'm fitting a solid peice of metal over the rear window. Well where the rear window was

Re: Vw caddy mk3 tailgate conversion mk4

Posted: Wed Oct 01, 2025 10:26 pm
by C Chis
Erwin.de is a good place to download all the relevant VW wiring schematics.

It’s a paid for service but it’s really good, you’ll have enough time to download everything for your van with an hours access.

Last time I used it it was 9€/hr


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Re: Vw caddy mk3 tailgate conversion mk4

Posted: Thu Oct 09, 2025 8:40 pm
by Manc
Thanks mate. Sorry I didn't get a notification. I will check it out

Re: Vw caddy mk3 tailgate conversion mk4

Posted: Mon Oct 13, 2025 9:10 pm
by STP
Your key should have 3 buttons, lock, boot release and unlock - going from top to bottom. If you somehow have a 2 button key then no mate, you can't get that to unlock only the tailgate / boot.

On the 3 button key, the middle one unlocks only the rear door(s) (barn) or tailgate etc. which then relocks itself when closed again.

Re: Vw caddy mk3 tailgate conversion mk4

Posted: Sun Mar 08, 2026 4:26 pm
by Manc
Sorry I didn't get a notification again. Cheers for that. I've got the 3 button one. I've still not done it cos I've got to paint the tailgate. I appreciate the info