Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1986 Mercury Sable L4-153 2.5L HSCFACTORY OEM SERVICE PROCEDURE
Ignition Switch: Service and Repair
Fig. 2 Ignition switch electrical connector removal:
Fig. 3 Lock actuator cover plate removal:
Fig. 4 Ignition switch removal:
1. Remove ignition lock as outlined elsewhere in this section.
2. On models equipped with tilt columns, remove tilt release lever attaching screw then the lever.
3. Remove lower instrument panel attaching screws, then the panel.
4. Remove steering column shroud attaching screws, then the shroud.
5. Remove steering column to support bracket attaching nuts and bolts, then lower steering column.
6. Disconnect ignition switch electrical connector, Fig. 2.
7. Remove lock actuator cover plate attaching bolt, Fig. 3,then the cover plate. The lock actuator assembly is free to slide out of cylinder housing.
8. Remove ignition switch attaching screws, then the ignition switch, Fig. 4.
9. Ensure replacement ignition switch is in the RUN position by fully rotating driveshaft clockwise to START position and releasing.
10. Install lock actuator assembly to a depth of .46---.54 inch from the bottom of actuator assembly to bottom of lock cylinder housing.
11. While holding actuator at proper depth, install ignition switch and cover. Attach with two tamper-resistant Torx head screws. Torque screws to 30-48 inch lbs.
12. Install lock cylinder, then rotate ignition switch to the LOCK position. Measure depth of actuator assembly as outlined in step 10 above. Actuator assembly must be .92-1.00 inch inside lock cylinder housing. If measurement is not within specifications, actuator assembly must be removed and reinstalled.
13. Install lock actuator cover plate with tamper-resistant Torx head screw. Torque screw to 30---48 inch lbs.
14. Install ignition switch electrical connector, then connect battery ground cable.
15. Ensure ignition switch works properly at all functions and the steering column locks functions properly.
16. Remove ignition lock cylinder as outlined elsewhere in this section.
17. Align steering column mounting bracket with steering column bracket and install mounting bolts and nuts. Torque to 15---25 ft. lbs.
18. Install steering column shrouds, then instrument panel lower cover.
19. On models equipped with tilt columns, install tilt lever and tilt lever mounting screw. Torque screw to 6.5---8.5 inch lbs.
20. Install ignition lock cylinder.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.