if you can ,lay on your back in the drivers seat and look below the key cylinder.you will see a small hole in the trim.but don't mistake it for the screw holes for the trim.insert the key in the lock ,use somtheng like a pick and insert it through the hole and push on the release button,turn the key to the run positin while pushing ofn the button.
To remove dash, pull off decorative trim on bottom. left of steering wheel is about a 7 inch piece, right of SW is about 22 inches, behind these are Bristol screws to remove the bottom of the dash cover, top of dash cover has Bristol screws whcih you can see. Must remove AC/Heater/headlight switch knobs.
The 1991 Mercury Sable ignition switch is held in place with a retaining ring. Loosen the retaining ring. Pull the ignition switch out. Remove the wiring harness from the rear of the ignition switch. Reverse the process to install the new ignition switch.
It's located on the steering column 2 screws unplug the harnest
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on a 1997 Mercury Grand Marquis kill switch be activated by a rear end collision
How to remove ignition switch
The repair section on autozone.com explains how to change the light switch.
Remove the retaining ring at the top of your Mercedes-Benz ignition switch. The ignition switch will slide out. Remove the wiring harness from the back of the ignition switch.
Fuse, loose connection, or the light switch. how do you remove the dashboard on a 94 mercury grand marque?
The 1986 Mercury Marquis does not have a fuel cutoff switch. The fuel pump does have a fuse, of which could render it as nonworking.
how can you start a '89 mercury cougar with a broken ignition switch?
Remove the ignition switch retaining ring. Pull the ignition switch out. Remove the wiring harness from the back of the ignition switch. Reverse the process to install the new ignition switch.
For a 1988 Mercury Marquis remove bottom shroud from steering column (5 Philips head screws). There is a wire running from the ignition switch to the left side of the steering column; detach it from the coupler (This can be done without a tool). Turn key to ON position until the panel lights come on. There is a small pin near the bottom of the key lock; push it in and pull the ignition switch out (don't panic if the wire seems to be stuck; it will come out). To replace, turn new ignition switch to same position. Push pin on the ignition switch in while sliding it back into the steering column. Reconnect wire and then replace shroud.