Grand Caravan Heated Seats
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Fairly innovative setup they have with terminals vs wires, allows much easier removal of the seats. I'm not aware of stow n go having the option of heated seats so I am assuming you have the swivel n go setup. I removed the seats once (heavy!) and thought that the terminals would be a good place for an electrical break due to corrosion or foreign objects. Before checking that, however, see if there is a fuse that could have blown, much easier than removing those seats. Van is not currently at my disposal otherwise I would check for you. Next guess is a break in the heating element itself. If you have a multimeter handy (20bucks, everyone should own at least one!), you can check the element using the continuity setting. Determining which contact is which will be yours to handle, though not many vans are equipped with middle row power tilt/slide. Happy troubleshooting, merry Christmas, and God bless.
Joe
Joe