1998 Toyota 4runner driver side power door lock problem.

Hi
Good Starting place .You Should check all the fuses To see if there If they are in good condition and not blown
Next place,. I would look Would be the wiring from the A post into the door For broken or damaged wires.ps Don't forget there will be more than one live going the door

OK TWO THINGS IF ITS A FACTORY ALARM CONECT YOUR BATTERY ALARM GOES ON IF ITS A HORN SOUND ITS FACTORY TRY LOCKING AND UNLUCKING YOUR DOORS FIRST DRIVER SIDE IF IT DONT STOP THEN PASANGER SIDE OK SOME TIMES YOU EVEN HAVE TO TRY IN BACK TAIL GATE TRY THAT IF ITS A AFTER MARKET ITS DIFFRENT I CAN STILL HELP IF YOU NEED ME TO OK

On the driver side the actuator is more likely the culprit,the linkage could of come off or the actuator just doesnt work

check the child safety lock on the inside each of the door where the lock is.

might be a contact problem in the switch. the others work fine so eliminates fuse issue. check to master switch seeing that it's the driver side tells me that you drive alone a lot might be worn out.

replace the power window master switch and chances are the lock actuators are bad. replace as neccessary. happy holidays

factory alarms do not need to be reset.. if a problem cycle key in drivers door lock then unlock a few times// that manually sets and deactivates factory alarm

Check this site out
you need the passenger side door lock assembly kit.
There is one posted for sale in the US on this site. just scroll down for the following information and link
Used 1998 Toyota Avalon passenger door lock assembly 1998 Toyota Avalon
passenger door lock assembly
this is the part that surrounds the lock driver side. Car color is green cary, North Carolina 27513
The solenoid or actuator arm for the door lock assembly is probably not working to full spec.

Hope this helps.

Either the wring going to that motor or the motor itself is bad.

If it doesn't work from master switch then the door lock motor actuator will need to be replaced, this requires pulling the door panel.