20 Most Recent 2005 Mercury Grand Marquis Questions & Answers

There is no headlight relay

2005 Mercury... | Answered on Oct 22, 2019

Ford P061B Diagnostics Common Causes and Checks

P2106 Diagnostic Aids: This DTC is an informational DTC and can be set in combination with a number of other DTCs which are causing the FMEM. Diagnose any accompanying powertrain DTCs first. For Crown Victoria, Expedition, Explorer, F-150 4.6L and 5.4L, Grand Marquis, LS, Mustang 4.6L automatic, Thunderbird, and Town Car with only P2106, repair any ABS DTCs, ABS related DTCs in other modules or vehicle communication concerns using the appropriate section of the Workshop Manual. Do you know how to diagnose a faulty MAP ? videos on youtube .
P0109 - Manifold Absolute Pressure (MAP/BARO) Sensor Intermittent Description: The sensor signal to the powertrain control module (PCM) is failing intermittently. Possible Causes:
  • Loose electrical connection.
  • Damaged MAP sensor.
Diagnostic Aids: Check the harness and connection. Application Key On Engine Off Key On Engine Running Continuous Memory Vehicles with an EGR system module (ESM) GO to DM13 All others GO to DM22

2005 Mercury... | Answered on May 02, 2017

the fact that the car runs well indicates that it is not the ECM ( brain to mechanics who have little idea)
take the vehicle to an accredited service center who has experience on your make of vehicle and have the fault codes read and then fix the faults reported

2005 Mercury... | Answered on Mar 19, 2017

No it is not rated for more than 1000 pounds and about 100 pounds at the tongue.

2005 Mercury... | Answered on Dec 09, 2016

No the limit is 1000 pounds.

2005 Mercury... | Answered on Dec 09, 2016

Go to Fordfleet.com and download the owners manual.

2005 Mercury... | Answered on Aug 27, 2016

Before you remove any airbag you must disconnect the battery and wait for at least 20 mins for any power going to the bag to discharge fully.If you don't,upon removing the connectors on the air you run a very high risk of setting it off.

2005 Mercury... | Answered on Apr 21, 2016

The motors responsible for moving the seats are not being properly powered. The issue could be due to blown fuse, bad relay, bad connections, bad switches, ad infinitum. In short, any part in between the power source (battery) and the motor is suspect.

Get a hold of the wiring schematic for your car, study it, and get to work.

2005 Mercury... | Answered on Feb 26, 2016

it is located under steering wheel to your right

2005 Mercury... | Answered on Feb 12, 2016

just unscrew the srews unplug,plug in new one and screw back on no programming required

2005 Mercury... | Answered on Feb 12, 2016

your lcm is a standalone unit does not require programing.

2005 Mercury... | Answered on Feb 12, 2016

lighting control module under dash on driver side. Ebay guy fixes them cheap. Type in lighting control module repair

2005 Mercury... | Answered on Feb 12, 2016

Its most likely it is your lighting control module.had the same problem too tap your lcm and if lights turn back on you need a new one.you can oder one from silverstatefordparts.com for 270$ and install yourself pretty easy job.hope this helps.

2005 Mercury... | Answered on Feb 12, 2016

The Lighting Control Module can only be replaced by the dealer or by someone who has the factory scan tool. The new module has a blank memory in it. The tech needs to upload the memory from the old module, then donload it into the new module.
Sorry to burst your bubble.

2005 Mercury... | Answered on Feb 12, 2016

The lcm is mounted in the same location in all crown vics. It's under the dash, above the gas pedal in between the climate controls and steering column. If you're having trouble locating it, engage the hazard flashers and listen to where the source of the clicking sound is coming from. You can also place your keys in the ignition and open the drivers door and track down the module by listening to where the warning buzzer tone is coming from.
  1. Open hood. Disconnect battery ground cable .
  2. Locate lighting control module above accelerator pedal.
  3. Disconnect bottom two electrical connectors from lighting control module.
  4. Remove two screws retaining LCM to bracket and unclip from bracket.
  5. Remove lighting control module from bracket and disconnect remaining electrical connector.
  6. To install, reverse Removal procedure. Check lighting control module for proper operation.
We do Repair and Exchange LCM's with Lifetime Warranty.
Go to ModuleRepairPro dot com

2005 Mercury... | Answered on Feb 12, 2016

Could be the rear height sensor.

2005 Mercury... | Answered on Dec 27, 2015

Not finding what you are looking for?
2005 Mercury Grand Marquis Logo

378 questions posted

Ask a Question

Usually answered in minutes!

Top Mercury Experts

gerry bissi

Level 3 Expert

4388 Answers


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Are you a Mercury Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Grand Marquis Mercury

  • Grand Marquis Mercury

Most Popular Question

removing passenger side air bag 2005

  • Cars & Trucks