This happened to me many times last winter. My steering wheel heater would turn itself off after a few seconds after I turned on. But once I drove the car for around 2-3 minutes, everything works.
I would say its a low battery protection feature causing it.
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JB4 Map 5, HKS SSQV 4 BOV, aFe stage 2 cold air intake with scoops, Alpina B3 flash
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