Cycle side lights work options side heated dry stays lit won't start

1.5 years old. Just stopped working. Buttons on the cycle side work and that’s it. The heated dry light stays on. Wont start. I want to order the parts one time. so can some one tell me what causes this and what I should replace first? Not sure if it’s the outer panel or the inner grey control I should replace.
Thanks for any help.
James