1988 jaguar and cannot open doors from outside

Spray some WD-40 or any spray to loosen it and try to move it with a screwdriver.

I had the same problem in my 2002 not isn't back I got a tin of wd 40 put the straw applecateter in the key hole and give it a good dose after 10 minute it open did it again now it works fine so I did them soon to make shore try it before you have to pull the door panel apart

replace bar linking inside with outside handle undo handle remove square bar inspect both parts replace which ever is worn or broke

Broken handle. You can get another from years 89-94. Just be sure to change out the lock cylinder with the one that is broken.

take a screwdriver and place it into the locking mech where the door meets the closing latch

The screw driver should be placed in door like this
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[[[[[[[[[[========)=>
||||||| <this is the door latch

Push ^^^ then pull out toward the interior of the car while toggling the handle

On the inside trim, you can remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. You'll need to lift the door panel upwards in order to get it off the window ledge. Then you'll need to manipulate the panel and disconnect the door handle linkage from the door handle and disconnect the wiring for your controls. Pull back the weather seal (if it has one) and then you can access the outer door handle. It sounds like the linkage connecting the handle to the latch may have broken/separated

If you havent' already broken the door handles tugging on them, inside the door you will find a linkage with a tensioner adjustment. You need to tighten that linkage adjuster. You will find if you take off the inside door panel and pull the linkage manually the door retanier will actuate. The job is a PIA, and requires a couple of very long, very small box wrenches. Dont attempt to adjust the linkage without loosening the retaining nut, the linkage will shear right off, thus making the outer door handles permanently locked Good luck.

If the doors will open from the outside, but do not open from the inside - the child safety switches are probably activated. Open the rear doors (from the outside) and slide the small levers next to the doors locks (on the edge of the doors) upwards.

are these doors electric or stander. u could pull off the door cover and check the mechanical arm inside the door to see if it fell of the lock for the key

This is a child safetly feature. There should be a small lever on the inside of the door frame on the door itself. You will have to switch it back in order for the handles to function again.