Possible ignition switch problem? 99 Explorer

IF YOU HEAR RAPID CLICKING...
IT MIGHT BE A BATTERY OR ALTERNATOR PROBLEM.

OTHERWISE

It might be a faulty starter.
One of the symptoms of a bad starter is a single clicking noise when you turn the key or push the start button. ... Most likely, you'll need to get your starter repaired or replaced. If you can jumpstart your car, drive to your nearest repair shop to get the problem diagnosed.

there are many other possibilities,if the above options are not helping:

Click the link below:
https://carrepairworld.blogspot.com/2021/06/why-car-wont-start-you-hear-clicking.html

this will help.Thanks.

The door locks wont work when the car is on. Dont spend time chassing this problem beacuse it is tied in with the ignition switch.

Key chime sounds if the little tab is grounded where the key contacts it. The theft light is supposed to blink when the system is armed to let you know it is armed. That's normal.

What do you mean by auto door locks won't unlock? The remote doesn't work? the door lock/unlock button on the door trim panel? Do they lock ok? Or, just unlock doesn't work?
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NOTE: The generic electronic module/central timer module (GEM/CTM) is connected to the ISO link and is diagnosed through the data link connector (DLC) with New Generation STAR (NGS) Tester.
There are five warning chimes and lamps the GEM/CTM controls: headlamps operating without the ignition on (chime only), door ajar (chime and lamp), key-in-ignition (chime only), driver seat belt warning (chime and lamp), and message center.


Audible Warnings Warning Condition Lamp Duration Audible Duration Audible Output Safety Belt 60 Seconds 6 Seconds Chime, 60/Min. 740 Hz Key In Ignition — Continuous Chime, 120/Min. 740 Hz Headlamps On — Continuous Chime, 240/Min. 740 Hz Door Ajar Continuous 1 Second Single Tone, 1000 Hz Message Center (Tone Request) — 1 Second Single Tone, 1000 Hz
When the is turned to RUN or START from OFF or ACC, the chime will sound for six seconds or until the safety belt is buckled.
The will turn on for 60 seconds or until the driver safety belt is fastened. Both the chime and the lamp turn on at the same time.
If the safety belt is buckled before the ignition switch is turned to RUN or START, from OFF or ACC, neither the chime nor lamp will be activated.
Anytime the is changed to RUN from START while the safety belt warning indicator is activated, the safety belt warning indicator will remain activated until either the timing sequence has been executed or the safety belt is buckled.
When at least one door is ajar and the key is in the RUN position, the door ajar cluster lamp is activated and remains on until all doors are closed. A warning tone will sound once any time the key is in the ignition switch and any door is open.
The key-in-ignition warning will sound when the driver side is opened with the key in the and the in OFF or ACC. It will continue to sound until the key is removed, the is closed, or the is in RUN or START.
The headlamp-on reminder chime will be activated if the headlamps or parking lamps are on, the key is not in the ignition switch, and the driver door is opened.
A single tone will be provided each time a ground signal is received from the message center. A one-second tone will sound for warning indications from the message center. A 100 milli-second tone will sound for each message center button depressed.
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1. NOTE: The generic electronic module (GEM)/central timer module (CTM) must be reconfigured upon replacement. Refer to the New Generation STAR (NGS) Tester help screen on the configuration card to program the Tire Size, Axle Ratio.
   The power windows system and rear window defroster system are (GEM) controlled systems.

• All Windows Operate With the Ignition in the OFF Position

• Circuitry.
• Accessory delay relay.

• CHECK the accessory delay relay; REFER to Component Test. If OK, REPAIR circuit 400 (LB/BK). If not OK, REPLACE the accessory delay relay. TEST the system for normal operation.