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2008 Ford Edge heated Seat will not turn off. It does not matter which position the on off button is in, the seat and back heat stays on

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  • Ford Master
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Heated Seats
This system allows independent seat electrical heating of each front seat on demand.
The components of the system are:

  • the seat heater mats located on the seat cushion and backrest.
  • the heated seat module located on the passenger power seat track and cushion frame on manual seat track.
  • the heated seat switches, located on the electronic automatic temperature control (EATC) module.
  • temperature sensors, located in the seat cushion heater mats.
A new heater mat will come assembled on a new foam pad.
Climate Controlled Seats
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the electronic automatic temperature control (EATC) module located on the instrument panel. Each front seat temperature is then monitored and controlled by the climate control seat module (CCSM) located on the front passenger seat track.
The climate controlled seat system contains the following components:
  • EATC module
  • CCSM
  • Thermo-electric device (TED) and blower assembly within each front seat cushion and backrest
  • Air filter (attached to each TED and blower assembly)
  • Cushion TED adapter attached to the cushion frame
  • Cushion and backrest manifolds
  • Cushion and backrest foam pads
  • Cushion and backrest trim covers
  • Seats
    Front Seats
    NOTE: The high speed controller area network (HS-CAN) circuits that pass through the passenger seat harness are part of the main HS-CAN LOOP. If the front passenger seat-to-floor connectors are disconnected, a NO START condition will result.
    NOTE: The medium speed controller area network (MS-CAN) circuits that pass through the driver seat harness are part of the main MS-CAN LOOP. If the front driver seat-to-floor connectors are disconnected, various MS-CAN modules will not be able to communicate.
    The front seats can be equipped with the following systems:
    • Two-way manual seat track (passenger only)
    • Four-way manual seat track (driver only)
    • Six-way power seat track
    • Manual recline
    • Power recline
    • Backrest, without fold flat
    • Backrest with fold flat (optional, passenger only)
    • Heated seats
    • Heated/cooled climate controlled seats
    • Memory driver seat
    • Manual lumbar (driver only)
    • Power lumbar
    • Adjustable head restraints
    • Seat side air bags (standard)
    • Occupant classification sensor (OCS) system on passenger seat

    Driver Seat Module - Memory Seat
    The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located on the driver seat track.
    This system allows automatic positioning of the driver seat to 2 programmable positions.
    • A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within 5 seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
    • If no memory switch input is received within the 5-second time limit, the operation is aborted and the memory seat position switch (set switch) LED is turned OFF. This also occurs if one of the following inputs is received during the 5-second programming limit:
      • Driver seat control switch
      • Memory seat position switch (set switch)
      • Power adjustable pedal switch
    A programmed seat position can only be recalled when the transmission selector is in PARK or NEUTRAL with the ignition switch in the RUN position. A position may be programmed at any time.
  • Principles of Operation
    Driver and Passenger Power Seats Without Memory
    The driver and front passenger power seat motors are hardwired to the seat control switches on each respective seat. The circuits are normally at ground through the seat control switch. Each individual seat track, recliner (if equipped) and lumbar (if equipped) motor circuit is switched to power when the specific adjustment position is selected.

    Power Driver Seat With Memory
    The driver power seat is controlled by the driver seat module (DSM), if equipped. The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a remote keyless entry (RKE) transmitter. There are 2 memory settings possible. The outside rear view mirror positions are also stored and recalled with the power driver seat positions.
    The DSM is located underneath the driver seat cushion frame. The DSM does not require calibration to the driver seat track.
    The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to power for operating the motors.
    As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor.
    The DSM communicates diagnostic trouble code (DTC) and other information using the MS-CAN communication bus. It should be noted for diagnostics that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for information concerning MS-CAN bus communication.
Do you have memory or not ?

Taking the vehicle to a qualified repair shop an having a diagnostic scan of the seat module's done could save time an money , by not replacing parts needlessly .

Posted on Jul 17, 2018

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  • Ford Master
  • 34,155 Answers

Id bet the relay is welded shut and thats why it wont turn off. find the relay and replace it.

Posted on Jul 17, 2018

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Posted on Jan 02, 2017

Anonymous

  • 1 Answer

SOURCE: heated driver seat problem

I just repaired one not long ago.It was a 2001 with heated seats.The first thing you can do is switch the switches to see if the problem moves to the other seat.There are at least three little heaters attached to the foam,that is bonded to the leather.One had a broken wire,the other two [that I know of in the base] tested good.Seems they all have to be working,so everyone must be tested for continuity,with out being pluged in to the others.The only way to see whats going on is to somewhat remove the leather from the seat. With extreme care I was able to get more wire out of the heater and soldier it back on.Then used silicone or 3m window welder around[I don't remember wich] to protect it as that is how it kind of it from the factory. It looked like the wire broke at the edge of the protective part due to sitting on the seat too many times. Bad design,to hold up over time.

Posted on Mar 12, 2009

Anonymous

  • 1 Answer

SOURCE: Heated seat

It is the heatling element, stock elements have a single wire snaked through the element and when the circuit breaks it is done, aftermarket elements have a wired grid that if one area fails it still works, they also spread a more even heat.

Posted on Oct 09, 2009

Sharon Ingram

  • 5 Answers

SOURCE: heated driver seat doesn't heat on 2003 ford explorer

I have a similar problem with a couple extras. I locked the keys in the truck and used my keyless entry pad on the door to unlock. When the lock (knob) popped up, I heard a noise. That's when the driver seat quit heating AND the lock button on the driver's side door will only unlock. It will not lock. The passenger side works fine. Could this be a fuse? Or electric?
Thank you!!

Posted on Oct 27, 2009

Anonymous

  • 2 Answers

SOURCE: Heated Seats

I had the same problem on my 04 LeSabre. To check to see whether it was the element or the switch, I unplugged both seats and ran jumper wires to make left switch control the right element. The switch and element worked properly. Then I ran jumper wires to make right switch control the left element. The problem was the same, so it was the element was bad.

I had my element replaced at the dealership, since I didn't want to wreck my leather seats. It cost over $400 (about $150 for the element). I guess it just tucks next to the old element - the old element stays in place.

Posted on Nov 28, 2009

Anonymous

  • 10 Answers

SOURCE: 2004 chevy. Heated seats will not stay on.

See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they dont; work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue.

Posted on Dec 11, 2009

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Where is the on button to turn on the heated seats in a 2007 ford five hundred? I just got the car and I don't know where it is and I was told there was heated seats.


The heated seats are a luxury feature that heat the front seats. This provides maximum comfort for the driver and the front passenger. To turn on the heated seats, press the heated seat button, which is a picture of a seat. There are two of these buttons, and each are located on the center console. The button on the driver's side of the console controls the heat for the driver's seat, while the button on the passenger's side of the center console controls the heat for the passenger's seat. Pressing the heated seat button will turn the heated-seats onto their highest setting. Pressing the button a second time will lower the heated seats to their medium setting. Pressing the button a third time will result in the lowest setting. Pressing the button a fourth time will turn off the heated seats. There are three lights next to the heated seat buttons to indicate what setting the heated seats are on.
Tip
The heated seats will only work when the engine is running.

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Do not have onwers manual for 2008 f-250 super duty. I want fuse diagram


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Connie, Check attached links, 2nd. link tells what fuse/relay and location.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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2010 Lincoln MKS Heated Seat on driver's side stopped working (Light in button turns off on its' own)


The most common cause of this problem is that the drivers seat heater grid is open or burned out. That is based on 25 years as a Ford dealer technician.

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2008 ford expedition heated seat button will not stay on


They are not supposed to "stay" on. When the seat gets to temperature, it shuts off. This prevents overheating/overloading. If it is cutting out, then there is a bad thermostat governing temperature control.

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2003 chevy avalanche heated seats wont stay on


The following diagnosis might be helpful if the vehicle exhibits the symptom s described in this PI. Condition Concern Driver and passenger heated seats inoperative or shut off in 30 seconds. There will be DTCs B2435, B2440, B3606 and or B1825 set in the Drivers Seat Module. The adjustable pedal position sensor, seat recliner position sensor and both heat seat thermistors share the same 5 volt reference internal to the Drivers Seat Module. A fault in any of these components circuits can make the heated seats inoperative or shut off in 30 seconds, as well as, the seat recliner and/or adjustment pedals may move in short increments when operated. A fault in heated seats, adjustable pedal or seat recliner will affect BOTH heated seats. Note Even if the vehicle is not equipped with adjustable pedals DTC B3606 still may set.Recommendation/Instructions To help isolate the area of concern use the Tech 2 and go to Sensor Data in the Drivers Seat Module. Monitor the following parameters for being out of range Recline Position Normal range .39V 4.58V Pedal Position if equipped Normal range .39V 4.58V Psgr. Seat Heat Sensor- Normal range 1V-4V Drvr. Seat Heat Sensor Normal range 1V 4V If a parameter is found to be out of range inspect circuits for any opens, shorts to ground, or voltage. If none found replace the suspect component Please be aware of the following common areas of concern The adjustable pedal position sensor internally shorted pulling the 5 volt reference low. Disconnect the adjustable pedal position sensor and see if the heated seats start working correctly, if so replace.Note Important The APP accelerator Pedal Position sensor is NOT the adjustable pedal position sensor. Make sure the correct sensor, adjustable pedal position sensor, is disconnected.The seat recliner position sensor internally shorted pulling the 5 volt reference low. Disconnect the recliner position sensor and see if heated seats start working correctly, if so replace.An open in either heated seat thermistor circuits signal or low reference The most common is the passenger thermistor where it passes through seat connector C305 pin L or K or C399 pins R or G A chaff to ground on either heated seat thermistor signal circuits. The most common is circuit 5475 black red or dark blue shorted to ground in the passenger seat near the buckle.Note Important The heated seat thermistors act differently to OPENS and SHORTS than the adjustable pedal position sensor and seat recliner position sensor. The adjustable pedals and seat recliner sensors can be disconnected for testing of the heated seats. Where as the heated seat thermistor circuit must be working correctly before EITHER heated seat will operate. Disconnecting one thermistor, which may have a concern will not allow the opposite heated seat to work correctly, BOTH side must be operational before EITHER heated seat will perate.Clearing DTCs If DTCs will not clear when using the Tech 2 after a repair has been made, try operating the device in which the repair was made. Example, if a repair was made to the passenger heated seat thermistor circuit, the DTCs may not clear unless the passenger heated seat is operated.Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed GM bulletins are intended for use by professional technicians, NOT a do it urselfer. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

The purpose of this bulletin is to provide the technician with the following service nformation Heated Seats Switch Operation Heated Seats Switch Diagnostics Heated Seats Switch Customer Information Switch Operation The engine must be running for the heated seat feature to work. The heated seats will shut off automatically when the ignition is turned off.Two buttons, located on the door, are used to control the heated seat. Press the orizontal (RH) button to heat the entire seat, back and cushion. Press the vertical (LH) button to heat ONLY the seat back.The three light bars are an indicator of the level of heat selected for either the entire seat (horizontal button) or ONLY the seat back (vertical button) To heat both the seat back and seat cushion at the same time, press the horizontal (RH) button with the heated seat symbol one time. All 3 light bars will glow indicating the HIGH temperature etting.The horizontal (RH) button does NOT have an ON FF indicator light.Press the button a second time, 2 light bars will glow indicating the MEDIUM temperature setting for the entire seat.Press the button a third time, 1 light bar will glow indicating the LOW temperature setting for the entire seat.Press the button a fourth time to turn the entire heated seat OFF.To heat ONLY the seat back, press the vertical (LH) button one time. An ON FF indicator light over the heated seat back symbol will glow to designate that ONLY the seat back is being heated.All 3 light bars over the horizontal (RH) button will glow indicating the HIGH temperature setting for ONLY the seat back.Press the button a second time, 2 light bars will glow indicating the MEDIUM temperature setting for ONLY the seat back.Press the button a third time, 1 light bar will glow indicating the LOW temperature setting for ONLY the seat back.Press the button a fourth time to turn the heated seat back OFF.Switch Diagnostics mportant: In order to eliminate unnecessary part replacement and comeback repairs, it is essential that the appropriate diagnostic tables and aids found in the applicable manuals are followed.Verify the condition prior to making any repairs. Refer to Seats and Seat Controls in the applicable Owners Manual or this bulletin for proper heated seat switch operation information.If an improperly operating front heated seat condition exists, refer to the Diagnostic Information and Procedures in the Seats sub-section of the applicable Service Manual in order to diagnose the system accurately.When measuring the resistance of the seat heater elements, ensure the values are within the updated range of 1.5-5.5 ohms. Refer to DTC B2425 or B2430-Clearing the DTC in the Diagnostic Information and Procedures in the Seats sub-section of the applicable Service Manual.Customer Information Some heated seat components from the above listed vehicles have been returned to the Warranty Parts Center (WPC) for heat function not operating properly. Analyses of these parts show 'no out of specification condition' or No Trouble Found (NTF)Provide customers with the knowledge that if bumped, either one of the heated seat switches can be activated/deactivated accidentally.Ensure customers have a thorough understanding of how the heated seat switches function.GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

Oct 26, 2011 | 2003 Chevrolet Avalanche

1 Answer

2008 Ford Taurus drivers seat heater w/n work. WHen you press the button for the seat heater to come on the light flashes and goes out..stays on as long as you hold the button down. When you release the...


you have elements underneath the seat cover most likely the drivers bottom seat element is burned out, you can check the resistance of it with a on ohm meter there is a 2 wire connector that goes to the backrest and then a 2 wire connector that goes to the seat cushion, more likely its the seat bottom that is burnt out

Dec 08, 2010 | 2008 Ford Taurus X

1 Answer

When I turn on the seat heater on the drivers side, it will stay on for about 10 seconds and then it goes off. Cannot turn it back on until the car if turned off/on. Seat doesnt ever heat up. Passenger...


Here is a heated seat TSB for cars built prior to 12/14/07

TSB 09-4-8
03/09/09
INOPERATIVE HEATED SEAT(S) - BUILT
BEFORE 12/14/2007

FORD:
2005-2007 Five Hundred, Freestyle
2008 Taurus X, Taurus

MERCURY:
2005-2007 Montego
2008 Sable

ISSUE
Some 2005-2007 Freestyle, Five Hundred, Montego and 2008 Taurus, Sable and Taurus X vehicles built before 12/14/2007 may exhibit an inoperative heated seat(s). This concern may be caused by an intermittent open element in the heated seat mat.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE
The heated seat system is controlled by the heated seat module located underneath the front passenger seat cushion. The heated seat switches are part of the heating ventilation air conditioning (HVAC) module but the heated seat system operates independently from the climate control system. The heated seat module regulates seat temperature by monitoring resistance of a thermistor type thermostat located in the cushion heater mat. The heated seat module is designed to remain on, heating the seat and maintaining temperature until switched off. For vehicles built before 5/1/2006, the module will time-out and switch off after 10 minutes.

1. Refer to Workshop Manual (WSM), Section 501-10 for pin point test on inoperative heated seat(s).
a. When testing the heater mats resistance and circuits for an intermittent open, technicians should sit in the seat while testing the circuit resistance, move the seat in multiple seating positions and apply pressure to several areas of the heated seat mat to ensure the mat element is not open intermittently.

2. Refer to WSM 501-10 for heated seat element replacement when an open electrical circuit has been identified.

Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT : Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME
MT090408 Use SLTS Operations If Actual
Available Or Labor Time
Performed As Actual Time

DEALER CODING
CONDITION
BASIC PART NO. CODE
14D696 28

I hope this helps to solve it.

Oct 06, 2010 | Ford Taurus X Cars & Trucks

2 Answers

2004 chevy. Heated seats will not stay on.


See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they dont; work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue.

Dec 10, 2009 | 2004 Chevrolet Silverado 2500HD

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