How to service and repair the ignition switch on Mercury Grand Marquis?

Service and repair operations on the ignition switch need to start by depowering the supplemental restraint system (SRS). Start by placing the ignition switch lock cylinder at RUN and use a suitable tool to push upward on the release tab which allows you to pull the cylinder outward. First unlatch and remove the tilt lever from the steering wheel before pushing the upper steering column shroud sides to release it. The upper and lower steering column shrouds need their three screws removed but reinstallation must follow with screw tightening to 2 Nm (18 inch lbs.). Disconnect the ignition switch electrical connector before removing its screw to extract the switch while torquing it to 5 Nm (44 inch lbs.) during installation. The SRS repowering process should start with a reversal of the removal sequence.

OEM Mercury Grand Marquis Ignition Switch

Starter Ignition Switch

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3 Ignition Switches found

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Mercury Grand Marquis Ignition Switch
Part Number: F4DZ-11572-B
$46.77 MSRP: $75.45
You Save: $28.68 (39%)
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Product Specifications
- Other Name: Switch Assembly - Ignition
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-2004 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
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Mercury Grand Marquis Ignition Switch
Part Number: F29Z-11572-D
$31.49 MSRP: $50.00
You Save: $18.51 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch Assembly - Ignition; Ignition Starter Switch
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1989 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
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Mercury Grand Marquis Ignition Switch
Part Number: 5W1Z-11572-AA
$41.23 MSRP: $65.47
You Save: $24.24 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch Assembly - Ignition
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS

Mercury Grand Marquis Ignition Switch

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Mercury Grand Marquis Ignition Switch Parts Questions & Experts Answers

Ignition Switch
5W1Z-11572-AA
Q: How to service and repair the ignition switch on Mercury Grand Marquis?
A: Service and repair operations on the ignition switch need to start by depowering the supplemental restraint system (SRS). Start by placing the ignition switch lock cylinder at RUN and use a suitable tool to push upward on the release tab which allows you to pull the cylinder outward. First unlatch and remove the tilt lever from the steering wheel before pushing the upper steering column shroud sides to release it. The upper and lower steering column shrouds need their three screws removed but reinstallation must follow with screw tightening to 2 Nm (18 inch lbs.). Disconnect the ignition switch electrical connector before removing its screw to extract the switch while torquing it to 5 Nm (44 inch lbs.) during installation. The SRS repowering process should start with a reversal of the removal sequence.