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.

2006 Mercury Montego Base, FWDFACTORY OEM SERVICE PROCEDURE

Symptom Table: Notes

SYMPTOM TABLE

Condition	Possible Sources	Action
Shift interlock system does not release/lock correctly	Circuitry open/shorted Fuse(s) Stoplight switch	GO to PINPOINT TEST A .
Shift interlock system does not release/lock correctly	Shift lock actuator	INSTALL a new shifter assembly. REFER to SELECTOR LEVER CABLE .
Selector lever linkage is out of correct gear relationship	Selector lever out of adjustment	REFER to SELECTOR LEVER CABLE ADJUSTMENT .
Selector lever linkage is out of correct gear relationship	Loose selector lever cable bracket	CHECK the selector lever cable bracket. Tighten as necessary.

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.

Shop Manual-Ready Tools Compare Repair Quote Quote Shield Pro

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.