Model Number: ksdb900ess2
Brand: KitchenAid
Age: 1-5 years

We have a ksdb900ess2 KitchenAid range. It is not heating and staying hot. We've tried recalibrating and that doesn't seem to work. I think this may be the heating element or temperature sensor.

Does anybody have any tips?

Is it safe to buy aftermarket brands for these?