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Mercury body & interior repair questions and answers

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  • AutoMD User Jim
    AutoMD User Jim - 2003 Mercury Grand Marquis - Body & Interior - 7/31/2014
    The doors wont lock when I put car in drive. The door locks work all other ways.
    All locks work fine with the remote or pushing the button. Suspect a bad relay but don't know where it is. Any ideas?
    • AutoMD Member
      7/31/2014 AutoMD Member
      get in car close all doors
      1.turn key to on. door unlock three times
      3.turn key from on to off. unlock 3 times
      5.turn key back on.
      6. door locks will lock/unlockto comfirm programming modeis active. unlock once. After 5 - 10 secondsdoor will lock/ulockto confirm successful program.
      8. turn key off.
  • Darin
    Darin - 2002 Mercury Grand Marquis - Body & Interior - 7/31/2014
    The A/C and Heater fan does not blow air at all. Why does this occur when the motor is good and there's power to it?
    I've checked the fuses. I took the fan out and it runs from a battery. I tested the wire coming to the fan motor and it gets power and will range from 3 amps to 11 when the fan speed is adjusted on the dash. When the fan is turned on and off, a small noise ...
    • jdl
      7/31/2014 jdl
      Do you have automatic temp control or manual? What color was the wire you checked for voltage? Coming off the battery should be high-speed, only.
      7/31/2014 jdl

      The diagram is manual ac. Dark blue wire with light green tracer is voltage. The orange wire with black tracer is ground.
      With this diagram, the function switch and resistors are on the ground circuit.
      7/31/2014 Darin
      coming off of the battery was high speed only.
      the chord that connects to the motor had one red wire and one black with wire with red stripes that would range from the 3 to 11.
      there is both automatic and manual speed control for the fan.
      7/31/2014 jdl
      Evidently my wiring diagram colors and the colors you mentioned don't match. So, red wire is voltage to blower motor and black wire with red tracer is ground? You might try a redundant ground, see if blower motor works?
      7/31/2014 jdl
      I have seen faulty blower motors that would run intermittently.
  • AutoMD Member
    AutoMD Member - 2000 Mercury Grand Marquis - Body & Interior - 7/12/2014
    Ignition key turns car does not start , not battery or starter.
    think it could be the linkage between the ignition key and ignition switch
    0 answer
  • AutoMD Member
    AutoMD Member - 2004 Mercury Grand Marquis - Body & Interior - 6/27/2014
    Windshield wipers came on last week by themselves and continue to run when they want to. Changing switch speed doesn't
    work. 128,000 miles on it. Turning car off it quits. Yesterday it came on only sometimes. It started last week 6-18 No warning lights come on. We think it is the switch but is there a way to check it out? I got a book on the air conditioning because there is a ...
    0 answer
  • AutoMD Member
    AutoMD Member - 2010 Mercury Milan - Body & Interior - 6/26/2014
    Can you use a universal lens to repair it?
    Driver side only needs to be fixed . The lights work !!!!
    0 answer
  • AutoMD Member
    AutoMD Member - 2001 Mercury Grand Marquis - Body & Interior - 6/20/2014
    The heating and air conditioning unit blow hot air when the fan is turned on.
    As soon as the car is warmed up if the fan is turned on hot air.No matter what setting the controls are on.The car runs fine with the system off. But when any setting is selected, air , max air ,heat, or anything , the hot air begins.
    0 answer
  • Mike
    Mike - 2003 Mercury Grand Marquis - Body & Interior - 5/30/2014
    Why would dome lights only come on when driver's is opened and by light switch?
    I will be changing lcm in the near future. Would this problem be related to bad lcm? Thanks in advance
    • jdl
      5/30/2014 jdl
      What you posted sounds normal to me. I don't see the problem? Most dome lights will come on when you open the door. Maybe I misunderstood?
      5/30/2014 Mike
      Sorry, I probably did not explain properly. Dome lights ONLY come on when driver's door is opened. They do not come on when other doors are opened.

      Again thanks.
      5/31/2014 jdl
      The lcm gets a signal from the door ajar switch to turn on the light. I hate to see you replace the lighting control module and then it still not work? There could be some applicable trouble codes on this system, B type codes. Some of the national brand auto stores will check codes for free. I just don't know if they will check B type codes?
      5/31/2014 Mike
      Thanks for the information. The lcm has to be replaced anyhow. The main problem is the headlights (I understand this is typical for this vehicle). Lately Ihave been having many (unrelated?) electrical problems. I am hopeful that this lcm will cure many of them.

      Again thanks
      6/1/2014 jdl
      Good luck, hope it fixes everything.
  • me
    me - 1999 Mercury Sable - Body & Interior - 5/1/2014
    How to change headlight assembly
    how to change headlight assembly
    JEFFRO - 2002 Mercury Cougar - Body & Interior - 4/23/2014
    What causes headlights to be very dim even with high beams turned ?
    Noticed when headlights are turned on the cooling fans come on. The ignition switch can be either on or off.
    0 answer
  • Greg
    Greg - 2002 Mercury Mountaineer - Body & Interior - 4/18/2014
    How to recharge a/c system
    I replaced a leaky suction line, do I need to add PAG oil or will it still be in the compressor? The system was empty. I have 134A to recharge the system, should I invert the cans or tilt them back and forth?
    • HouseCallAuto
      4/18/2014 HouseCallAuto
      You have to evacuate the air from the system before you add refrigerant. You cannot do this because you do not have the experience nor the vacuum pump and hoses with fittings.
  • AutoMD Member
    AutoMD Member - 2002 Mercury Sable - Body & Interior - 4/13/2014
    My sable has auto climate control it now blows out all hot air no matter what temp I put it on and also with max ac
    is my blend door actuator bad and where will I find this
    • HouseCallAuto
      4/13/2014 HouseCallAuto
      Yes, replace the blend door actuator. Its under the glove box, take down the plastic cover under the dash and you will see it.
      4/13/2014 AutoMD Member
      took cover off only part that looks like blend door has 2 wire couplers on it is this hard to get to or located to the left I see a part that has ATC on it It's about 2" wide and 5/6" tall. But it's more behind the center console radio control area. is there a video for my car all I've seen is ford explorer
    • HouseCallAuto
      4/13/2014 HouseCallAuto
      go to and look up the procedure as they have remove and replace procedures
  • AutoMD Member
    AutoMD Member - 2004 Mercury Grand Marquis - Body & Interior - 3/16/2014
    What is wrong with my lights?
    The only lights I have are my headlights and brake lights. I have no interior lights, no turn signal lights, no dashboard lights, and no tail lights.
    0 answer
  • AutoMD Member
    AutoMD Member - 2003 Mercury Grand Marquis - Body & Interior - 3/11/2014
    The heat is always on
    I've tried to change the heat to vent or Air Condition and nothing changes. I can hear the compressor come on when I switch the control to Air but I still get hot air. The air always comes out of the defrost vent and no where else no matter where I set it. There ...
    • Jimm
      3/11/2014 Jimm
      Several possibilities; faulty heater control valve, faulty heater blend door actuator. I'd lean towards the heater control valve.

      The parts are readily available from these many on-line sources,,,,, - to list only a few possibilities. in fact, they (RockAuto) list the heater control valve from around $22.00 for your vehicle.
  • jbrandi
    jbrandi - 2004 Mercury Sable - Body & Interior - 3/3/2014
    Drivers side window will roll down but not always up.
    The voltage at the motor is a constant 12 volts both ways up or down, but the motor will not respond. So I replaced the motor. Didn't work, I figured that if the motor was getting 12 volts(had another door that got 12 down but 7 up and replaced the Master ...
    • Jimm
      3/3/2014 Jimm
      Check the window travel - make sure the window guides are well lubricated - no binding. Check the window alignment during the travel - sometimes the regulator may be worn to allow the window to shift.
  • AutoMD Member
    AutoMD Member - 2003 Mercury Grand Marquis - Body & Interior - 2/24/2014
    Rear defroster does not work
    The rear defroster does not work. When I check the fuse I found out that I do not have power going to this fuse in the fuse box. Someone told me that the power comes form a relay before it goes to the fuse box. I can't find a relay for this. Any other Ideas>
    • HouseCallAuto
      2/24/2014 HouseCallAuto
      Confirm that fuse 104 (40 amp) is no blown and has battery voltage. this fuse is in the underhood fuse box. The rear defroster relay is located in this same fuse panel and is labeled C1099. Remove this relay and swap it with another relay that visually is the same from another place in the fuse panel (for example the relay labeled C1300 or C1011 might be the same relay) C1300 is the air suspension relay and C1011 is the blower relay..

      If the rear defroster now works you are done - just buy a new relay. If it still does not work then update this post and I will give you more detailed circuit checks that go beyond this if you are able to follow those instructions by using a 12 volt test light for example.
      7/31/2014 AutoMD Member
      I have the same problem and have tried what you said and all is ok what else to try?