Just thought id add......my 2009 car got this message today....i turned the car off and started a few seconds later and its gone. Ive also had transmission failure appear during the winter months. Once again it cleared after a restart. And i have not had that message during this summer....maybe cos i dont use lights/heater anywhere near as much
Im pretty sure my car has the original battery, so i presume its now on its way out.
Rather a battery than an expensive transmission problem.