I have a 2003 lincoln navigator and my bcm is gone it is a salvage title, and my air conditioner is not getting cold. My machanic said we need to start with the bcm first to do the air conditioner wor


Asked by Aug 19, 2014 at 08:35 PM about the 2003 Lincoln Navigator Luxury 4WD

Question type: Maintenance & Repair

Can I buy a bcm and have him hook it up to
do the ac, (it's very hot in sacramento). And
I have a few other small issues that I think
is at fault like my windows are not rolling
up all the way without coming back down
by themselves (driver side only).and I have
a door sensor that says open door and
open lift gate that might be the bcm but
could be the switch??? Also I wanted to
know if and when I fix the ac will this also
correct the cooled seats??? Does it run off
the air conditioner??? Thankd

1 Answer


No, the seats do not run off the A/C. http://www.expeditionforum.com/f16/heating-cooling-seats-info-17480. Yeah I know it says expedition but it's the same for Lincoln and explains the seat cooling. There is a thermo-electric device (TED) located within each front seat cushion and backrest. The TED uses a ''Peltier'' circuit of P-type and N-type semiconductors connected in series using copper electrical conductors. Sandwiched between the semiconductors are insulating ceramic plates. When current is applied to the TED, one side releases energy as heat, while the opposite side absorbs energy and gets cold. By reversing the current flow, the hot and cold sides reverse. As for the rest of your question it very well could be the BCM

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