My 2006 Avalon's power memory seat button doesn't work but other controls for seat work.

James,

Here's some sites that will help you...

https://www.google.com/search?q=driver+side+power+seat+on+2003+navigator+not+working

Best to you.

unplug it or pull fuse

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 .

Principles of Operation
The driver seat module (DSM) is on the controller area network (CAN) communication network. To support several vehicle subsystems, the module permits intermodule and diagnostic tool communications.
The DSM controls the memory driver seat and the passenger memory power exterior mirror. This passenger memory power exterior mirror feature allows the driver to program personalized mirror positions. Once the driver stores a mirror position, the driver can recall the setting by pressing the corresponding memory switch or by using a programmed remote keyless entry (RKE) transmitter. For additional information, refer to Section 501-10 .

How to Diagnose Controller Area Network CAN

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.

Easy Entry/Easy Exit
The driver power seat easy entry/easy exit feature can be enabled/disabled. Refer to Section 418-01 or the owner's literature.

This may need to be done with a scan tool

Seat controls and drivers memory all go through the body control module. Make sure you have not popped a fuse. It will be a high amperage one. If the fuses are all good, then look at the BCM which is under the drivers seat.

Auto Repair: How to Replace a Power Seat Motor - YouTube

? 1:44
https://www.youtube.com/watch?v=EDh-0rs5Fjo
Oct 26, 2010 - Uploaded by automdvideos
Auto Repair: How to Replace a Power Seat Motor ... 2007 - 2008 Ford Expedition/Lincoln Navigator Driver Bottom Install Video ...2003-2006 Chevy/GMC Seat Cover Install 1 of 3 - eBay Ready ...2000 Ford Explorer Front Seat Track Stuck Motor Repair - Duration: 4:39. by cubmancan 4,959 views. 4:39.
Drivers seat is dead! No power seat or heat. - TheDieselGarage.comwww.thedieselgarage.com/.../96465-drivers-seat-dead-no-power-seat-hea...Mar 22, 2010 - 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005.... Power seat on driver side didn't work.....passenger did! Neither ...DANG electric seat ' Chevy Truck Forum ' GM Truck Clubwww.gmtruckclub.com/forum/threads/dang-electric-seat.2990/Apr 27, 2006 - 10 posts - ‎7 authors'03 Tahoe My driver seat just stopped, of corse not where I need it, the ... I have a 2003Tahoe and both heated seats are not working. ... with my seat heater on the drivers seat in my 03 Avalanche, it turns ... The driver's side on my Silverado gets way warmer than the passenger side. ... Frozen New Member.Power Seat Problems?? - Tahoe Forum - Che

make sure it is in park with ignition on to adjust seat,
CONDITIONS FOR MEMORIZED POSITION ACTIVATION Ignition key "ON" and shift lever in "P" position All parts of the memorized positions can be activated. However, if the brake pedal is being depressed, the seat position will not change. Key not in ignition switch and within 30 seconds of opening driver's door The memorized position can be activated. If any driving position memory switch is pushed while one of the memorized driving position profiles is being activated, the operation will stop. To reactivate the system, push the desired button ("1" or "2") again. The driving position memory control system cannot be operated while the vehicle is moving. If the vehicle's battery is disconnected, the computer's memory will be erased and the memorized position will have to be set again.
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if you wouldve followed

paulmacintyre s answer,you would not have needed to post it again,

There is no need to go disconnecting the battery as Leonard Javier has suggested above. If your Jeep is equipped with a driver's memory seat, the memory can be cleared at any time using the controls provided by the manufacturer.

How you would go about doing this is covered in the 2006 Jeep Grand Cherokee Owner's Manual, begining on page 114.
If you do not have an Owner's Manual for your Jeep, you can download a PDF version of it for FREE at the following URL.

http://www.jeep.com/en/owners/manuals/

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.
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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.
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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

On GM products this is usually controlled by the remote being close to the ignition switch. The remotes have number 1 and 2 on the back of them. When it does not work do you have the remote close and do you have one remote for you and one for the other driver? Also, some cars have buttons to run this feature. Mom's stopped working when she got a remote start added to the car. Let us know if you find an answer.