my driver seat gets very hot as well, infact 1 bar is the only setting slightly bearable!
rear seats- folded the one side down and im assuming somehow the heater got pushed on(i was the only person in the vehicle so

)
long story short: bmw told me(this is the direct quote) "

"
the vehicle is a 4.6is dinan s3 and has been serviced at bmw since new, i also service my m5 a bmw(both are well out of warranty) i thought they would have treated me slightly better for being a loyal customer