I have a 90' LS400 with the driver door locked. I can not unlock the door from inside/Keyless or outside. I have not way of removing the inside panel because the door does not open. Any help is appreciated.

 

Welcome to Club lexus

May have to slim jim it.

 

If Slim jim doesn't work and I doubt it if it will, you may have to do what I did with mine. I had the same problem back in Oct of 2004. Get in thru the passenger door for awhile until you have time to tackle the task.
Drill a hole, approx. 2" in the door panel from the inside close to the lock & unlock mechanism. I didn't have a hole cutter so I used utility knife and messed up the door panel. Try to unlock the door thru that hole using needle nose pliers.
Onces you get the door unlock, most likely Door Unlock spring broke. No one (Dealer closed on weekend)will have the same spring length, width, and tension. I stretched my broken spring and put it back in there.
Since I don't plan to sell the car, and if I do, no one will want to buy a 250,000 miles plus car anyway, I don't care about the hole in the door panel. Also, if you close the door, you can hardly see the hole from the inside. You can buy a used panel to replace it but I look at it this way, if the spring break again, I don't have to drill another hole and waste money.
Let me know if you have any question.

 

THX LEXUSHEAD
I will try this approach this weekend. I have been jumping from the passenger side for a month now and tired of it.