Need a scan tool & factory diagnostic manuals to work on the
seats & the heat.
Could be about eight different things
Could be a under seat blower motor
Nothing you can do or most shops will touch,
unfortunately a dealer doesn't work on them
either,but they have a outside seat person come
in after the service bays close at night to do seats
SOURCE: My heated/air cooled seats do not work
You may try cleaning the filters and checking for loose connections. Heat and cooling filters should be changed or cleaned with some regularity. Like an air conditioner, these things require maintenance that are often overlooked.
SOURCE: lincoln blackwood climate control
have had my drive seat fixed 3 times and is being repair as we speak for the fourth. Passenger side I had repaired once and it is out now also. I love my Navie, but the seat accessories are junk. I too, have a 2000. If you can bear with me for about a week, I will know why these are not working and will be able to follow up with you about yours first hand instead of guessing. Fair enough?
Remove fuses 10 and 11 in the underhood junction box. Leave out for 5 minutes then reinstall. If the seats start working your Zephyrs dual climate control seat module will need replaced.
SOURCE: heated seats in my 2004 navigator are not working
if the light doesnt come on for the heated seat, *sometimes* the electronics need to be reset. You do this by very carefully taking both battery poles off the battery entirely. Then touching the negative to the positive WHILE NEITHER IS TOUCHING THE BATTERY (this is very important otherwise you could get shocked). This will clear computer and reset it. Then reconnect the positive first. then the negative. this will sometimes work. This is only if the light for the heated seats is not coming on. If the light is coming on you probably need a new heater core.
SOURCE: 2003 Lincoln Navigator Heated Seat Problem
Can only Diagnose with a scanner and a trouble chart. It's all electronic
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