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Mercury body & interior repair questions and answers

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  • 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?
  • AutoMD Member
    AutoMD Member - 2006 Mercury Grand Marquis - Body & Interior - 2/19/2014
    Why do my wipers and washer come on by themselves?
    multi switch already changed. wipers also wont settle at the correct position. also wont delay now. also no speed change except for slow(all settings except for high) to high.
    • HouseCallAuto
      2/19/2014 HouseCallAuto
      Replacing the wiper motor will solve this. Been there done that many times.
  • AutoMD Member
    AutoMD Member - 2005 Mercury Grand Marquis - Body & Interior - 1/3/2014
    Why is gear shift lever stuck in park position?
    lighting module has recently been replaced , since replaced cannot shift from park position into drive
    • HouseCallAuto
      1/3/2014 HouseCallAuto
      If your brake lights also do not work, replace the brake light switch or maybe you knocked it out of position while replacing lighting control module?
  • rdoss
    rdoss - 2004 Mercury Grand Marquis - Body & Interior - 12/30/2013
    What could be rattling under the car , i thought it was the heat sheild around muffler
    i removed heat sheild around cattalitic converter do to it rattling amd being dented pretty bad . seemed to quiet the rattling for a while . now the ratttling is back and is getting louder and more often . any help would be great.
    • Jimm
      12/30/2013 Jimm
      Several possibilities; exhaust system, brackets, hangers, catalytic converter, muffler. Need more information - when does the rattle / noise occur?
  • AutoMD Member
    AutoMD Member - 2004 Mercury Grand Marquis - Body & Interior - 11/7/2013
    The dome light stays ON
    Latch switch shorted out
    • HouseCallAuto
      11/7/2013 HouseCallAuto
      Be more specific please. Do you mean all interior lights are staying on or just the dome? Is there a door ajar light illuminated on the panel?
  • AutoMD Member
    AutoMD Member - 2002 Mercury Grand Marquis - Body & Interior - 11/6/2013
    I have the defrost on. Heat and motor runs great. I turn on the floor heat switch and the damper does not switch
    completely to allow heat to flow to the heat exhaust.
    0 answer