The largest and best supported Jaguar cars enthusiast site on the Internet!

Serving Enthusiasts since 1993
The Jag-lovers Web

Currently with 3,166 members

S3 Trunk Lid Solenoid Mod to Unlock

S3 Trunk Solenoid Mod to Unlock

Michael Stanford & Harold Rabbie

Just modified my S3 trunk lid solenoid to both lock and un-lock.

Fairly simple, requires a small bolt, a nut, two washers and a slight bend in the solenoid actuator rod.

Looking at the lock mechanism from inside the trunk (with the lid open, duh), you will find a slotted metal linkage with a round metal rod linked to it horizontally. The rod comes from the solenoid (to the right as you look at it) which is wired parallel to the door solenoids. The length of the slot and rod prevent the solenoid from unlocking the latch.

To make it unlock, just find a small bolt that will fit in the slotted piece of metal. In my case, a metric bolt and nut that were laying in my tool box worked great. Put a 1/4" flat washer on the bolt, thread it through the slot, add another washer and nut on the back. Tighten the bolt securely in the left-hand end of the slot. Then, carefully bend the rod coming from the solenoid in a manner which will shorten it about 1/4-3/8".

Operate the door locks. You should find that the trunk now un-locks and locks with the doors. If not, adjust the rod length by bending or move the bolt slightly.

I too installed the little bolt in the trunk/boot unlock slider, but now I'm having second thoughts about it. Any thief who has access to the inside of the car can operate the driver's side door master lock. They then have access to the boot/trunk, which is where you might have your valuables hidden. Without the little bolt installed, you can leave the ignition key with a valet parking attendant without any worries.

Looking for or selling Jaguar Automobilia? Then use our absolutely free Jaguar Collectibles Exchange! Got some pictures you would like to share with other Jag-lovers?
Then try our automated Photo Album and post some images!


Please help support the move to the new site, and DONATE what you can.
A big Thank You to those who have donated already!



Go to our Homepage
Improve your Jag-lovers experience with the Mozilla FireFox Browser!

  View the latest posts from our Forums via an RSS Feed!

Jag-loversTM Ltd / JagWEBTM 1993 - 2024
All rights reserved. Jag-lovers is supported by JagWEBTM
For Terms of Use and General Rules see our Disclaimer
Use of the Jag-lovers logo or trademark name on sites other than Jag-lovers itself in a manner implying endorsement of commercial activities whatsoever is prohibited. Sections of this Web Site may publish members and visitors comments, opinion and photographs/images - Jag-lovers Ltd does not assume or have any responsibility or any liability for members comments or opinions, nor does it claim ownership or copyright of any material that belongs to the original poster including images. The word 'Jaguar' and the leaping cat device, whether used separately or in combination, are registered trademarks and are the property of Jaguar Cars, England. Some images may also be Jaguar Cars. Mirroring or downloading of this site or the publication of material or any extracts therefrom in original or altered form from these pages onto other sites (including reproduction by any other Jaguar enthusiast sites) without express permission violates Jag-lovers Ltd copyright and is prohibited
Go to our Homepage
Your Browser is: CCBot/2.0 (, IP Address logged as on 18th Jun 2024 05:27:37