Question about 2003 Mercury Mountaineer

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The driver's side heated seat won't turn off on my 2003 Mecury Moutaineer. Also, how do I change my cabin filter?

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  • Mercury Master
  • 4,369 Answers

Your vhicle build date is on a blue sticker on the driver door or door frame. If not there, check other doors.
The heated seat Module is under the seat. You can unplug the connector on it or the heated seat switch to shut it off. I supect the module is bad. get one used from car-parts.com. The cabin air filter is under the leaf screen at the base of the windshield. Remove wiper arms and leaf screen for access. Please rate, thanks. Principles of Operation - Heated Seats - Vehicles Built 03/2002 Onward
NOTE: Two heated seat modules are used, one for vehicles built up to 03/2002 and one for vehicles built 03/2002 onward. The modules are not interchangeable.
The driver and passenger heated seats share a common battery and ignition feed. A shared ground source supplies the heated seat control switches. When the heated seat control switch is pressed with the ignition switch in RUN or START, a momentary ground signal is sent to the heated seat module. The heated seat module then supplies power to the heating element circuit. The cushion element and seat backrest element are wired in series and powered by the same output. The heated seat module also will ground the separate indicator circuit at the dual automatic temperature control (DATC) module display panel to indicate an ON state. The heated seat module will remain on until the heated seat control switch is pressed and a momentary voltage signal is received, or until 10 minutes expire. If the ignition source is removed from the module, the heated seat module will enter an OFF state and will not return to ON until the switch is once again pressed with the ignition switch in RUN. The heated seat module is designed to heat the seat to 37.5?C (99.5?F) and maintain the temperature until time-out or switched off. This temperature is maintained by the heated seat module monitoring the temperature sensor located in the seat cushion element, and adjusting the current flow to the heating elements.
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Posted on May 22, 2011

6 Suggested Answers

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Posted on Jan 02, 2017

burkholder
  • 25 Answers

SOURCE: cabin air filter

All information contained here and on subsequent pages are subject to the myFordFocus.com Terms of Use Policy, which basically states that myFordFocus.com IS NOT responsible for anything you do to your car... Please read it! :)
Cabin Air Filter Installation
Annoyed with all the pollen and dust in your interior? Unless you special ordered it, Ford left out the cabin air filter. Here's how to install one in your Focus. Compliments of myFordFocus.com Forum Member: CinnabonBoy Cost: $10.00 Time to Complete: 10 minutes Tools Required:

  • Flat Head screwdriver
  • Phillips head screwdriver
Parts Needed:
  • Purolator cabin filter: C25387 -OR- Motorcraft cabin filter: FP38
cabin2-small.jpg cabin3-small.jpg cabin4-small.jpg
Instructions: (Click images to Enlarge)
  1. Stop the windshield wipers when they are in the up position. Since the filter will be placed on the passenger side, this will make it easier to access the panel.
  2. In the center of the windshield, there is a small plastic circle piece. Pry it off with the flathead screwdriver, and set it aside in a safe place. Remove the screw you have uncovered. (See picture) This will make it easier to remove the panel you are about to remove.
  3. There are 3 plastic locking clips holding the cover down. Use your flathead screwdriver to GENTLY pry them up. Once they are up, give the whole piece a little tug up and to the left. You will see the slot where the filter goes.
    • BE CAREFUL!!!! Everything is made of plastic, and everything can break. Take your time, and don't get frustrated.
  4. In this slot, there is an eggcrate style plastic piece retaining the space where your filter is about to be placed. Pull up and out on it to remove it. You will not need this piece, so you can discard it, or keep it in a safe place.
  5. Remove your filter from the box.
    • Note: which side is to be placed "up".
  6. Slide the filter into the casing, ensuring a snug fit.
  7. Replace everything you removed by reversing the steps above.
  8. Go in the car, and blast the vent, to remove any dust, etc. that may have been in the vents.
  9. Enjoy your clean air! You will notice that your interior will stay cleaner for longer periods of time, and you can breathe easier!!

Posted on Aug 21, 2008

snownbird33
  • 120 Answers

SOURCE: How do you replace a Cabin Air Filter and air filter for vented front seats?

Good Day
Here is the step to step to change the filter.

The filter is located under the right side of the instrument panel, in the HVAC housing. Trim panel may have to be removed to gain access to the filter.

now for the seats I can not fine that anyway for filters. I don't think there is filters for the seats because it uses cabin air, that is already filtered.
I can send you how the seats work if you like? let me know how you make of in changing the filter.

Cheers

Posted on Sep 17, 2008

warlock61
  • 659 Answers

SOURCE: LOCATE AC CABIN AIR FILTER

no cabin filter on 2003 crown vic cabin filter is under pass cowl trim

Posted on Dec 02, 2008

  • 194 Answers

SOURCE: Driver side heated seat is stuck on. Won't turn off.

most likely relay stuck or switch...

Posted on Apr 25, 2009

  • 2841 Answers

SOURCE: where to locate cabin air and heat filter for 2003

It does not have one. Starting in 2003 the cabin filter was no longer installed on your vehicle.

Posted on Jun 10, 2010

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