Question about 2003 Mercury Grand Marquis

1 Answer

Compass does not work at all - 2003 Mercury Grand Marquis

Posted by on

  • Gisela Lee Martin
    Gisela Lee Martin Mar 30, 2011

    Maybe I should call it message board does not work at all



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 273 Answers

This is a very common issue with this, and many other overhead consoles of this era. I offer a repair solution with a lifetime guarantee. Check it out: www,
I have info on how to remove the console etc there as well. Drop me a note if you have any questions, thanks!

Posted on Aug 14, 2011


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Compass not working on 2006 Mercury Grand Marquis

Electronic Compass The compass display and module are contained in the overhead console and are replaced as an assembly. For additional information, refer to Section 501-12 . The compass display can be turned off and on by pressing the MODE button in the overhead console. The vehicle heading is displayed as one of N, NE, E, SE, S, SW, W, or NW.
Inspection and Verification
NOTE: Press the MODE button to turn on the display.
  1. Verify the customer concern by operating the vehicle along roads of known direction to duplicate the customer concern with the compass.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical
  • Compass module
  • Central junction box (CJB) fuse 15 (7.5A)
  • Circuitry

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the fault is not visually evident, determine the symptom and GO to Symptom Chart .
Pinpoint Test A: The Compass Is Inaccurate/Inoperative
Normal Operation The compass receives battery voltage from the central junction box (CJB) through circuit 964 (DB/LG). Ground for the compass is supplied through circuit 676 (PK/OG).
    Possible Causes
  • fuse
  • circuit 676 (PK/OG) open
  • circuit 964 (DB/LG) open or short to ground
  • compass zone setting
  • compass calibration
  • compass module
PINPOINT TEST A: THE COMPASS IS INACCURATE/INOPERATIVE NOTE: Always set the zone and calibrate the compass before replacing an inaccurate compass.
NOTE: After installing a new compass, always set the zone and calibrate.
  • Key in ON position.
  • Check the overhead display.
  • Does the overhead compass display remain on after prove out?
GO to A3 .

  • Press and release the SELECT switch on the overhead console.
  • Does the overhead compass display turn on?
If the compass display turns on correctly, GO to A3 . If the compass display turns on, but the heading is inoperative/inaccurate or the display indicates VAR, GO to A4 . If the compass display turns on, but it does not display all directions, or indicates CAL, GO to A5 .

  • Turn the headlamp switch to the parking lamps ON position.
  • Does the compass display dim?
TURN the headlamp switch to the OFF position. GO to A4 .

TURN the headlamp switch to the OFF position. GO to A8 . A4 CHECK THE COMPASS ZONE SETTING
  • Set the compass to the correct zone for your location. Refer to Compass Zone Adjustment in this section.
  • Does the zone adjustment set correctly?
GO to A5 .

INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A5 CALIBRATE THE COMPASS
  • Calibrate the compass. Refer to Compass Calibration in this section.
  • Is the compass calibrated correctly?
GO to A6 .

INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A6 CHECK THE COMPASS ACCURACY
  • Position the vehicle at each of the 8 directions (N, NE, E, SE, S, SW, W, NW) and verify that the displayed heading is accurate. The vehicle must be stationary for at least 10 seconds at each direction.
  • Is the compass display accurate in each direction?
The compass is OK. REVIEW the operation of the compass with the customer.

INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation. A7 CHECK THE VOLTAGE SUPPLY TO THE OVERHEAD CONSOLE
  • Key in OFF position.
  • Disconnect: Overhead Console C930.
  • Key in ON position.
  • Measure the voltage between the overhead console C930-1, circuit 964 (DB/LG), harness side and ground.
  • Is the voltage greater than 10 volts?
TURN the key to the OFF position. GO to A9 .

VERIFY the CJB fuse 15 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. A8 CHECK THE DIMMING CIRCUIT
  • Key in OFF position.
  • Disconnect: Overhead Console C930.
  • Turn the headlamp switch to the parking lamps ON position.
  • Measure the voltage between the overhead console C930-4, circuit 484 (OG/BK), harness side and ground while rotating the instrument panel dimmer switch.
  • Does the voltage vary between 0 and 10 volts?
GO to A9 .

REFER to Section 413-00 for further diagnosis of the instrument cluster and panel illumination. A9 CHECK CIRCUIT 676 (PK/OG) FOR OPEN
  • Measure the resistance between the overhead console C930-2, circuit 676 (PK/OG), harness side and ground.
  • Is the resistance less than 5 ohms?
INSTALL a new overhead console. REFER to Section 501-12 . TEST the system for normal operation.

REPAIR the circuit. TEST the system for normal operation.

Nov 30, 2017 | Mercury Grand Marquis Cars & Trucks

1 Answer

How to reset compass

You have to go to a vacant car parking lot and go in a full lock circle 6 times clockwise and 5 times anticlockwise. Mine has a set button.

A known problem

This one is a bit more helpful. Magnetic interference?

Compass Problem

Mar 16, 2016 | 2008 Lincoln MKX

1 Answer

Compass in the dash stop working

needs service.
the FSM covers this toy. read

or the real deal (FSM)
click jeep


Did you scan the PCM yet, if not why not, id bet there are errors there. like compass module not talking or?

Feb 24, 2015 | 2014 Jeep Grand Cherokee

1 Answer

My rear view mirror with temp and compass sometimes will not work. It will show all the digital shows up at once and not the temp, but sometimes it works ok. What can I do?

Does the compass work when the temperature goes out? If the compass still works then chances are that the ambient temp sensor is defective. Also, could be wiring to the sensor. If the compass goes out with the temperature then chances are the mirror itself is defective. Cheapest most common problem is the ambient temp sensor. It's behind the grill by the condenser at the front of the vehicle.

Aug 20, 2014 | 2003 Chevrolet Silverado 1500

1 Answer

Where is horn relay on a 2010 jeep compass

I need help on my 2010 jeep compass 2.4l the horn does not work I put a new horn in it worked for a couple of days and stopped working. Any one know if there's a fuse for the horn I can not find one ?

Apr 23, 2014 | 2007 Jeep Compass 2.0

1 Answer

2007 compass

yes it should it works with the brakes transmission and so on you need to check the codes the suspension and traction control are not working properly

Nov 03, 2013 | 2009 Jeep Compass

1 Answer

2007 jeep compass low beam doesnt work

Check the fuse for that side yes you have a fuse for each high and low beams for each side

Mar 26, 2013 | 2007 Jeep Compass 2.4

1 Answer

Compass module fallure escape 2008

I would check all fuses and replace any blown and retest. If the compass is still not working..I would make sure there is power at the compass module...If there is.. I would replace the module.

Nov 13, 2012 | 2008 Ford Escape

Not finding what you are looking for?
2003 Mercury Grand Marquis Logo

555 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts


Level 3 Expert

78267 Answers


Level 3 Expert

5655 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

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

Answer questions

Manuals & User Guides