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

Problems with Door Locks

Problems with Door Locks

Shane Mantoszko & Brian Radovich

Chip, I had the same problem with all 4 door locks. I did the following and now all 4 work like brand new (and they are still the original 1978 door locks....)

  1. Take all trim off doors
  2. Inspect all levers and arms that are involved with the door opening and locking process. Look for bends/rust/gunk. Make sure that the clips are still all properly holding these arms. If they come out of the clips then they will be pushing/pulling at an angle and will not close right.
  3. Clean off all rust/gunk.
  4. Spray lubricant (I used silicone based) on every joint, and every part of the assembly that has any minute movement. Not just the handle assembly, but every possible thing inside the door that is related to locking/unlocking/opening/closing the door.
  5. Pull the dust cover back off the solenoid and put some lubricant there as well.....the solenoid may be sticking because of gunk. make sure not to spray it deep into the solenoid itself.....just on the central shaft.
  6. Once all moving parts are lubricated, lock/unlock the door 20 or so times in rapid succession to let the lubricant move around and get to work.
  7. At this point you may find the locks are operating just great, so put the door trim back on and live happy. If still not locking/ unlocking fully, then you may need to adjust the arms, and lengthen the opening or closing arm (whichever is not moving the lock mechanism all the way). Be careful though, cause these should be already set up right.....maybe some previous owner played with them. Other option is that solenoid is no longer moving the system far enough, so go buy a good 2nd hand one and try it out to see if it fixes the problem....if so, keep'll last ages. (mine are 20 years old and still work like new after the above process....) If they are still not locking/unlocking fully, then try a new solenoid.... if still not working....then something mechanical is wrong in the arms/joints themselves......look at someone's car who has the same model and see what may be out of place/bent/broken.....cheers.

    Brian Radovich adds a warning

    JCI TIP: 85-87 Sedans drivers door lock switch (looks like a solenoid) will start sticking and malfunctioning. This is a big problem as the switch controls the three other door solenoids and will burn them up in short order. Disconnect the drivers door lock switch ASAP and then replace it - otherwise you will end up replacing the three solenoids too.

    If you have an 85-87 SIII XJ6, this will be happening to you soon, as we have several of these door lock problems recently (including my wife's car) where we had to replace the switch and three solenoids. Just as soon as it starts acting up, disconnect it and then replace it. Not a problem on earlier or later Sedans, not sure about about XJS.

    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 - 2023
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 8th Jun 2023 04:43:38