Estimates last updated October 16, 2025

2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost

The average cost for a 2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement is between $152 and $231.

Labor costs are estimated between $85 and $125 while parts are priced between $67 and $106.
This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.

Ignition Lock Cylinder Replacement

What is an ignition lock cylinder?

The ignition lock cylinder and ignition switch are two separate components. The lock cylinder is the portion that the key slides into and allows the ignition to turn. This is one of your vehicle's defenses against theft.

How does the ignition lock cylinder work?

If the correct key is inserted, small actuators on the lock cylinder will allow it and ignition switch to rotate.

What are the symptoms related to a bad ignition lock cylinder?

When the ignition switch lock cylinder fails, it can create a situation where the ignition cannot be turned, or takes much wiggling and shaking before it finally turns. Or, it's possible the ignition will turn and run with the key removed, or lets the key be removed in any position. Lastly, the lock can fail to release your key, or not allow the key to travel all the way into the ignition lock cylinder.

Can I drive with an ignition lock cylinder problem?

When the ignition lock cylinder is malfunctioning, it may be impossible to insert the key, turn the ignition, or remove the key from the ignition. If the key won't go in or turn, you won't be able to drive the car, obviously. If the key won't come out, theft is a major concern. Either way, you'll want this fixed quickly.

How often do ignition lock cylinders need to be replaced?

Theres no set maintenance routine for the ignition lock cylinder. Lock cylinders fail somewhat commonly, but mostly for higher-mileage vehicles. Most vehicles will never need the lock cylinder replaced. You can help yours last by cleaning your ignition key, making sure there's no lint on it before putting it in the ignition, and keeping your keychain fairly light, so as not to put added pressure on the cylinder while you drive.

Mercury Ignition Lock Cylinder Replacement Cost Estimates

The average cost for a Ignition Lock Cylinder Replacement is between $152 and $231 but can vary from car to car.

Mercury Grand Marquis

Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost by Year

The average cost for a Mercury Grand Marquis Ignition Lock Cylinder Replacement is between $152 and $231 but can vary from car to car.

2011 Mercury Grand Marquis

$258-$298

2010 Mercury Grand Marquis

$258-$298

2009 Mercury Grand Marquis

$258-$298

2008 Mercury Grand Marquis

$258-$298

2004 Mercury Grand Marquis

$152-$231

2003 Mercury Grand Marquis

$152-$231

2002 Mercury Grand Marquis

$152-$231

2001 Mercury Grand Marquis

$152-$231

2000 Mercury Grand Marquis

$152-$231

1999 Mercury Grand Marquis

$152-$231

1998 Mercury Grand Marquis

$152-$231

Show All Years

Ignition Lock Cylinder Replacement

Jump to:Commonly associated repairs Cost estimates by vehicle Cost estimates by year

What is an ignition lock cylinder?

How does the ignition lock cylinder work?

If the correct key is inserted, small actuators on the lock cylinder will allow it and ignition switch to rotate.

What are the symptoms related to a bad ignition lock cylinder?

Can I drive with an ignition lock cylinder problem?

How often do ignition lock cylinders need to be replaced?

How are ignition lock cylinder issues diagnosed?

If the ignition key stops working, or won't come out of the cylinder, the ignition lock cylinder is usually the culprit. A mechanic can confirm it's the problem after disassembling it.

How is an ignition lock cylinder replaced?

In most cases, the steering column plastic covers will be removed, and the ignition lock cylinder will be turned and released. A new cylinder will be installed, which usually will come with a new key.

RepairPal recommendations for ignition lock cylinder issues

It's best not to force open a stuck lock cylinder at home, as it's easy to damage to the ignition switch, plastic covers or the steering column. Ignition switch wiring is bundled with wiring for the airbags, and tampering with the airbag electrical wiring can result in serious injury.

Can I replace the ignition lock cylinder myself?

This job is best left to a professional repair shop. Newer ignition systems have more advanced security and can be difficult to access or remove.

Get a RepairPal Fair Price Estimate® for your 2004 Mercury Grand Marquis.

Our Fair Price Estimate will help you avoid overpaying based on your car, needed service, and labor rates in your area.

2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost

The average cost for a 2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement is between $152 and $231.

What will this cost in Columbus, OH

Need a repair? Trust our RepairPal Certified network.

Ignition Lock Cylinder Replacement

What is an ignition lock cylinder?

How does the ignition lock cylinder work?

What are the symptoms related to a bad ignition lock cylinder?

Can I drive with an ignition lock cylinder problem?

How often do ignition lock cylinders need to be replaced?

Mercury Ignition Lock Cylinder Replacement Cost Estimates

Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost by Year

What will this cost in Columbus, OH

Need a repair? Trust our RepairPal Certified network.

Ignition Lock Cylinder Replacement

What is an ignition lock cylinder?

How does the ignition lock cylinder work?

What are the symptoms related to a bad ignition lock cylinder?

Can I drive with an ignition lock cylinder problem?

How often do ignition lock cylinders need to be replaced?

How are ignition lock cylinder issues diagnosed?

How is an ignition lock cylinder replaced?

RepairPal recommendations for ignition lock cylinder issues

Can I replace the ignition lock cylinder myself?

Mercury Ignition Lock Cylinder Replacement Cost Estimates

Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost by Year

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost

The average cost for a 2004 Mercury Grand Marquis Ignition Lock Cylinder Replacement is between $152 and $231.

What will this cost in Columbus, OH

Need a repair? Trust our RepairPal Certified network.

Ignition Lock Cylinder Replacement

What is an ignition lock cylinder?

How does the ignition lock cylinder work?

What are the symptoms related to a bad ignition lock cylinder?

Can I drive with an ignition lock cylinder problem?

How often do ignition lock cylinders need to be replaced?

Mercury Ignition Lock Cylinder Replacement Cost Estimates

Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost by Year

What will this cost in Columbus, OH

Need a repair? Trust our RepairPal Certified network.

Ignition Lock Cylinder Replacement

What is an ignition lock cylinder?

How does the ignition lock cylinder work?

What are the symptoms related to a bad ignition lock cylinder?

Can I drive with an ignition lock cylinder problem?

How often do ignition lock cylinders need to be replaced?

How are ignition lock cylinder issues diagnosed?

How is an ignition lock cylinder replaced?

RepairPal recommendations for ignition lock cylinder issues

Can I replace the ignition lock cylinder myself?

Repairs Related to Ignition Lock Cylinder Replacement

Mercury Ignition Lock Cylinder Replacement Cost Estimates

Mercury Grand Marquis Ignition Lock Cylinder Replacement Cost by Year

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service

Tuffy Tire & Auto Service Center - Grandview

Excite Auto Repair & Towing

All In Auto Service