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Automatic seat adjustment (front/back) switch is dead

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  • ilovegaslol Jan 15, 2009

    2002 Pathfinder LE here. Have the seat on AUTO for adjustment, well the other day it stopped responding to forward/backward movement! As many have stated before - all other seat functions seem to work (up/down+seat back).. but the seat itself no longer moves/responds although the switch seems to be working.



    HELP!!!

  • pmcc78 Feb 04, 2009

    i have the same problem except, mine front to back just goes dead every once in a while and when the car sits ovenight it starts working again

  • Anonymous Mar 02, 2009

    My seat will not move back and forth but the seat memory still works. I have two buttons for seat memory and those work but cannot readjust for another driver to drive comfortably.

  • jbpepple Mar 23, 2009

    I had it happen also, had to have a new adjuster put on, part number from the dealer is 89039415, had it replaced in 2006 and it just failed again, will cost $340.00 plus labor.
    Would suggest checking with a salvage dealer to buy a used one.

  • jbpepple Mar 23, 2009

    I had it happen also, had to have a new adjuster put on, part number from the dealer is 89039415, had it replaced in 2006 and it just failed again, will cost $340.00 plus labor.
    Would suggest checking with a salvage dealer to buy a used one.

  • brentpierce Apr 24, 2009

    swichback front seat won,t work can you help me what to do

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5 Suggested Answers

  • 3 Answers

SOURCE: Front driver seat adjustments.

I just had this problem fixed with a Tech 2 tool in my '03 yukon xl denali. The seat has a control module underneath of it that controls the 2-position memory, the power seat functions, etc. It needed to be reprogrammed - about $200 at the dealership, or free if you 1) have a good relationship with your service manager, or 2) own or know someone with a Tech 2 tool.

At first I thought it was because I had a Canadian model truck (the headlight switch is stuck "on" at all times no matter what position it's in, and the rear air controls are in celcius and not farenheight).

I'm assuming the switch worked before, and you may have encountered some sort of electrical issue (like a dead battery, or you gave someone a jump, you have a bad ground, you just installed an aftermarket stereo, you used a computer tuner, etc.).

Hope this helps!

Posted on Dec 30, 2008

  • 38 Answers

SOURCE: 1998 Cabrio drivers seat extremely to adjust front

I would have a look if there is not something stuck between the rails.
It is commen for stuff to fall there.

Posted on Jul 11, 2009

97F350diesel
  • 1326 Answers

SOURCE: kia sedona front passenger seat stuck in forward position

Electric or manual??? If electric one of the motors has gone out. If the kids were playing with it they may have held the button down causing the motor to spin while the seat was all the way foward and it will just burn the motor up after so long. Also the switch could be bad. Unfortunatley being that its power there is no way to manually move the seat back without the motor turning or removing the seat and spinning the motor sprocket by hand...

Posted on Sep 10, 2009

Mike2015
  • 9 Answers

SOURCE: seat adjuster not working

The motor could be bad. Try to jiggle the wiring harness CAREFULLY!

Posted on Nov 12, 2009

BeninVa
  • 389 Answers

SOURCE: 2001 VW Beetle. The driver's front seat adjuster

I'm assuming you have manual adjustment seats. There is a spring underneath the seat that locks the end of the lever into corresponding notches in the seat frame rail. That spring has either fallen off or broken.

Posted on Jan 22, 2010

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I have a 2006 lincoln ls sport and the drivers seat is stuck in one position there is only power to the lumbar


The dirver seat module is attached to the underside of the seat frame. It must be calibrated if replaced. The dealer can use a tool to get failure codes (DTCs) from teh module. 1/2 hour labor charge to extract codes.


Front Seats
The front seats have the following features:
  • Driver memory
  • Power lumbar (optional)
  • Manual lumbar
  • Horizontal, vertical front and rear tilt adjustments (driver)
  • Horizontal, vertical front tilt adjustment (passenger)
  • Power recline
  • Climate controlled (optional)
Adjustment of the seat may be accomplished with the seat control switch located on the side of the seat.
--------------------------------------------------------------------
Principles of Operation
Driver Power Seat - Memory
NOTE: The memory power seat track may stall when operating at 0°C (32°F) or below. Once the vehicle's interior temperature rises above 0°C (32°F), normal operation should return.
The driver power seat is controlled by the driver seat module (DSM). The DSM does not need to be configured, however the driver seat does need to be calibrated when the DSM is installed. 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 line from ground to power to adjust 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 must be calibrated to the seat track it is controlling. For additional information, refer to Seat Calibration. Once the DSM is calibrated to the seat track, it will only allow movement within the calibrated range.
Seat Calibration
The DSM is calibrated using a diagnostic tool. The calibration procedure automatically powers the driver power seat through its full range of motion and records the FULL STOP positions by monitoring the motor position sensors. Once the FULL STOP positions or range of the seat have been recorded, the DSM will only operate within the calibrated range. Any input attempting to drive the seat beyond the calibrated range will be ignored. This calibration is used for all seat control functions including manual switch control and memory recall positioning. During the seat calibration, the DSM may identify a function that is inoperative, such as a position sensor not changing. If the DSM identifies a concern that has a related diagnostic trouble code (DTC), the DSM will set the related DTC at the end of the validation procedure.
The calibration procedure powers the seat track adjustments to the end of their travel, which is determined by the DSM sensing a change of state in the motor position sensors. If there is a concern with the seat track or motor position sensor that limits the travel, the DSM will interpret the stopping point as the end of travel and store the position. The DSM is not able to determine if the seat has moved to its FULL TRAVEL position. It is only capable of monitoring and storing the amount of travel seen by the position sensor changing states.
For additional information on carrying out the power seat calibration procedure, refer to the diagnostic tool operating manual.
Memory Seat
Memory seat positioning can be recalled with the memory switches on the driver door panel or a programmed remote keyless entry transmitter. In either case, the DSM receives a memory recall 1 or 2 command from the driver door module (DDM) over the SCP communication network. The memory recall switches are a hardwired input to the DDM. The DDM also receives the remote keyless entry transmitter signals. Once a valid memory recall command is received from the DDM, the DSM moves the driver seat to the position stored in memory by powering the appropriate motors and monitoring the motor position sensors until the position is reached.
This system allows automatic positioning of the driver seat to 2 programmable positions.
  • To program position 1, move the driver seat to the desired position using the seat control switch. Depress the set button. Within 5 seconds, depress button 1.
  • To program position 2, repeat the previous procedure using the set button and button 2.
  • To recall position 1, depress button 1. To recall position 2, depress button 2.
A position can only be recalled when the transmission selector is in PARK or NEUTRAL. A position may be programmed at any time.
Easy Exit/Easy Entry
The easy exit function moves the seat backwards about 2 inches when the ignition key is removed from the ignition switch. The DSM receives a key out command over the SCP communication network and powers the driver seat rearward. This function will not operate if the seat is less than the travel distance to the end of the track, or the function has been deactivated at the message center driver personality settings. The DSM will also cancel this operation if a valid input command is received, such as the seat control switch or memory recall request.
The DSM will record the current seat position before powering the seat for an easy exit function. This recorded position will be used to return the seat to this position on the easy entry operation. During easy entry operation, the seat is returned to the position previous to the easy exit operation. Easy entry operation will be cancelled if a valid input command is received by the DSM.
Passenger Power Seat
The passenger power seat motors are hardwired to the passenger seat control switch. The circuits are normally at ground through the seat control switch. The individual circuit is switched to power when the specific adjustment position is selected.
-----------------------------------------------------------------------------------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Front seat track motors
  • Front seat track binding or obstructed
  • Front seat backrest power recline
  • Lumbar motor
  • Climate controlled seat ducts
  • Driver door module fuse(s):
    • Central junction box (CJB) fuse 7 (5A)
    • CJB fuse 22 (10A)
  • Driver seat module fuse(s):
    • Battery junction box (BJB) fuse 21 (20A)
    • CJB fuse 7 (5A)
  • Passenger power seat BJB fuse 28 (20A)
  • Rear heated seat fuse(s):
    • BJB 11 (20A)
    • CJB fuse 16 (5A)
  • Driver power lumbar BJB fuse 21 (20A)
  • Passenger power lumbar BJB fuse 28 (20A)
  • Driver and passenger climate controlled seat module fuse(s):
    • BJB fuse 26 (30A)
    • CJB fuse 16 (5A)
  • Seat control switch
  • Memory set switch
  • Lumbar seat control switch
  • Seat fan motor
  • Climate controlled seat module
  • Climate controlled seat switch

Jan 14, 2011 | 2001 Lincoln LS

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How do i remove the front seats of a 1998 Pontiac Grand Prix?


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