youre light turns of after a while becuase the resistor that heats up inside youre seat is gone, open circuit,
you need to order the heater pads that go inside the seat.
then dissaemble the seat and replace the heating pads.
it took me 2 hours, but now i got nicely warm heated seat.
you could use a multimeter to check for resistance accross the terminals of that come from the seat heating system.
if the pads circuit is open, then you will not read a resistance.
keep in mind that for the pads to fail after some years is common.
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