So i got my new seat in and it took 2 minutes to remove the old beat up one.  while i had it off i decided to tackle the dead motor for the front side of the seat up/down and why it wasnt moving. I pushed the up and down and watched as it barely turned. even helping with a wrench didnt work so i took it off with the 2 torx screws attaching the worm gear housing to the frame.

 

Tested again and it spun but was weak and after about 20 seconds of freespin it would stop...

 

ok so i took it apart and cleaned the stator and brushes. still same effect, 20 sec and stop.  so i took it apart and looked at it and here is what i found and the fix but there is a safety clause to this fix and it is at your own risk to perform.

 

 

on one terminal there is a plate thermistor between the brush and the plug. it appears that this thermistor is the safety feature for keeping the motor from burning up if a switch gets stuck or sat on. It had worn out and was resisting waaaaay to easy. So all i did was clean the copper and solder a bead on to bridge and bypass <---WARNING DOING SO DEFEATS THE SAFETY PERFORM AT OWN RISK.

 

now seeing that i never lower the seat and the motor now runs like a raped ape i just unplug it and leave it as i always end up bumping against it lowering it (probably why it wore out)

 

to access motors and clean them, under the seat cushion are 4 10mm bolts easily accessible.   remove them and lift seat off.   what you see are the seat motors. clean them as you wish and lube as you wish. if you have and weak motors, get a torx wrench and remove the two black screws on the worm housing to the frame.   then a phillips to unscrew the motor housing. carefully disassemble and you will see the thermistor. make sure bearings spin freely and lube if needed.  scrape a clean spot on the thermistor and solder a bead where i did and reassemble and test. if you plan not to adjust a seat once set UNPLUG IT as to not start a fire.

 

as you can see a seat motor goes for $70-$150  so if you need a free fix just to get them working when you need them here you go

 

again this is a DO AT YOUR OWN RISK as this bypasses the thermal safety of the motor. If left plugged in a chance of fire may occur if motor is activated for a long period of time, thus unplug it for safety.

Thanks for the post, mine are acting up too, probably same problem. 

Funny I just changed blower motor and with few drops of oil got my old one to work good again. It was making a squeaky sound on low speed. For any one our there having same noise, it take 5 minutes to get motor out and add few drops of oil to it.