Ignition switch change 2002 Mountaineer - 2002 Mercury Mountaineer

There are different releases for some designs. Column cover needs to be removed on side of switch, phillips heads and some plastic snaps make it that complete cover has to be out of way. There is pin release usually on bottom of lock tumbler, some need paper clip to be pushed inside for key tumbler to be released. Some have small spring loaded button to be pressed externally.

The housing for switch to attach to column can be adjustable with slots that are important. Scratch position marks on column to allow for remount of new switch in same position. The timing (up or down) is dependent on how everything aligns with gearshift lockouts like starter working in Park or Neutral and showing proper gear. These adjustments are a pain and can be avoided by scratching a mark on the column before removing the old part. Some parts do not have the slotted style and fit in a fixed hole for the bolts to attach it.

Finally, be careful with the electric connectors so you do not break a tab.

Could you brake down your long paragraph ? Not sure what you have checked and what you need to check.

Please add more detail information as to your problem, what have you done as diagnosis, if any at all.

this sounds like the theft system is activated and needs to be reset, the key not going into the switch could be a worn key or tumblers in the key switch.

Have you tested for a failed starter or it's solenoid ,
after it stops & you have nothing ?

Could be your loosing throttle position, if a sensor or
ignition coil is bad,that will shut it down

Check for OBD Codes

To much...go on eBay or carpart. Com and buy a complete seat with switch, if diagnose s proves this to br probl

10.55 volts is an indication of a flat battery as the voltage should be 12 volts. Have a load test done on the battery to check for failed cell

dicharged batt--probly cause its old or connects are loose or dirty--alternator mite not be chargn or starter motor got issues--ignition switch at steerin colum cud be worn

Here's how you do it, easily and correctly, the first time. Ignition on, press the Set Up button once and the display will say "Press Reset for Sys Check" but don't press reset, wait a second or two and press Set Up again and you'll be able to scroll through the options. Keep pressing until you get to the one that says "Pres Reset at Oil Change" and follow the instructions from there.

the window switch is bad replace it and you should be fine

you could have a faulty switch bay that is not closing the circuit or, the wiring harness is worn or faulty as well. if the wiring harness is ok and, the switch bay is functioning properly, you should change the bulbs in this case.