Does anyone know how to change the wiring so the heated seats don't need weight on them to work? I'd love to turn them on when I start and have them warm after I scrape the windows.

Ha, Ive always wondered if they need weight on them to work?

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LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
http://www.cardomain.com/id/jeepjeepster

My Charger had heated seats, and I think they turned on without me in the seat, but without your butt in the seat, the heating element can't transfer the heat very well because there is no solid contact. When you sit down you compress all the materials together and the heat can transfer.

But it's just a guess.

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Mine: 2006 Jeep Liberty Sport CRD-the only color-BLACK!
-Tow package, 6CD in-dash
-Cobra CB w/glass mount
-Mopar Slush mats
-Cooper Discoverer ATR 245/70R16 on stock rims
Hers: 2004 Dodge Durango Limited 4.7 4x4-Molten Lava (She thinks it's purple!)

I know that I am pretty late to this thread, but my heated seats do not need any weight on them to activate. I'd imagine that the newer liberties have the seat heater tied into the OCS system somehow.

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02 Liberty Limited
Silver Outside & Taupe Inside
Heated Seats, Sunroof & Infinity speakers
USA Spec I-Pod adaptor, Mopar Sub, Garmin GPS
Tow Package, Select-Trac
Rock Rails, Tow Hooks

Have to check on my '05 ... I can just toggle the switch on the side of the seat and it lights up, so I assume it's "on".

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DIRTY KJ :: flickr photostream
"Primitive life is very common and intelligent life is fairly rare ... some would say it has yet to occur on Earth" --- Stephen Hawking