The switches for the power locks are located in each front door, and in the trunk. They're actuated by the key locks. Perhaps you can't get the key to work in one of those? I'd start there. One could be jammed up somehow.
I'll check it out in a bit. I do know all the locks to seem to auto-cycle well, albeit slowly on one door. They've gotten lots of cycles recently. lol
As for smoking and things like that, the injection pumps seldom require any kind of service. Unless it was abused with some concoction of improperly heated artery clogging waste fryer oil, the pump should be fine.
Compression check the engine with it warmed up. You'll want to wear gloves! You want to see numbers in excess of 300PSI (bare minimum) for an engine that will run well. They can actually run smoothly with worse compression than that, but will never really run correctly. You don't want to see a deviation of more than 20PSI across each of the five cylinders, as a rule. Unbalance will cause poor running.
300 eh? Hm... I need to find my gauge. Remove the injectors and thread in there? (I should look in a manual for that procedure.)
There are many filters. If you have not yet, change them. Two in the engine compartment, and a screen in the tank itself.
Most filters seem recently replaced. Looking new isn't being new of course, and if I purge then they'll need replacing I think.
Inspect the entire fuel system for leaks, as air in the system can cause undesirable running. The manual primer on the lift pump is a common source of trouble if it's leaking.
late yesterday I did notice fuel seeping from in between an injector body and nozzle. That gives me good cause to service them all, yes?
Also, I noticed what appeared to be a injector return line "pulsing" between #1 and #2.. there might be a stopped up return line. (?)
If that doesn't work, remove the injectors and take them to a local diesel repair shop- it's typically inexpensive to have them cleaned and pop tested.
Once your fuel system is in good order, the car will run a lot better, and you can focus on the other things.
Good advice, I would have probably figured out alot of this, but forgot the compression check, nor thought about the order of things you gave. Makes sense to check the cylinder pressure first JIC there's a biggie internal problem.
Makes me wonder if the numbers would change much after a diesel purge, if that cleans the cylinders out. Interesting... I like interesting ideas...