Based on Webserve's questions and comments about my lock problem, I
decided I'd better do more fact-finding about the symptoms of my lock
issue, so played with the locks a bit today, and found I was wrong on
some counts. Here is what I found today:

Summary of today's testing:

Manipulating either front door lock using the key never causes the
opposite front door to lock or unlock, but will lock or unlock the rear
doors,
and will close all windows and the sunroof.

My dash rocker switch does work, but only on the rear doors,
all windows, and the sunroof, ...NOT on the front doors.

Rear doors cannot be LOCKED by manipulating either
front door lock plunger.

Once locked by the dash rocker switch, the rear doors can be
unlocked by manipulating a front door lock plunger, but only if the
opposite front door plunger is already in the locked (down) position.

The ignition key does not cause any door locks to be locked or unlocked
automatically.

So, does anyone have any ideas what lock system component can cause this???

WayneC

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Short version results of my tests today....

1) with the car parked and all doors locked in each case:

  - If I unlock the driver door with the key,
      both rear doors unlock (passenger front stays locked)

  - If I unlock the passenger front door with the key,
      both rear doors unlock (driver front stays locked)

   with the car parked and all doors now unlocked in each case:

  - If I lock the driver door with the key, both rear doors lock
         (passenger door stays unlocked), and if I keep the key turned,
          all windows and the sunroof lock

  - If I lock the passenger door with the key, both rear doors lock
         (driver door stays unlocked), and if I keep the key turned,
          all windows and the sunroof lock

3) sitting inside the car with the ignition key off, rear doors unlocked

  - dash rocker switch does nothing (probably normal)

  - cycling either front door lock plunger does nothing

4) sitting in the car with the ignition key on,
    driver and rear doors unlocked, front passenger door locked

  - cycling either front door lock plunger does nothing

  - pushing the dash rocker swich locks the rear doors
    and rolls up the windows and closes the sunroof

  - cycling either front door plunger will unlock the rear doors
    but does not lock them

  so, I can only UNLOCK the rear doors by manipulating the front
  door plunger, I cannot lock them except by using the dash
  rocker switch.

5) further testing showed that the position of the opposite
   front door lock plunger matters, ie, the plunger on the door
   opposite to the one I try to manipulate...

    If the opposite door plunger is up, manipulating the other door
    plunger does nothing (ie, maybe the system thinks all
    the doors are already unlocked, and so it will not unlock
    the rear doors).
    This seems to be true whether or not the ignition is on

6) I did not find a case where the passenger door plunger came up
   by itself; ie, when the ignition is on or the car is started;
   I could have sworn that happens frequently. I am either
   mistaken and it happens only when a passenger leaves the door
   unlocked on exiting, or it just didn't occur during my testing
   today. I do know I frequently walk around the car (or reach
   across) to lock the front passenger door when I am alone.