Join Date: Feb 2019
Location: Bendigo, Victoria Australia.
Yep, know this 'refusing to start' problem well. My 2009 Se5 has displayed every dumb message and flashed every red light possible in the months I have owned it, but not since I changed my start procedure. My non-starting appears to have been solved by pressing the brake pedal before putting the key in it's switch, then simply following the normal start procedure while the brake pedal remains pressed.
Good luck! They are lots of fun, hey!