Having a 2014 IDEC ES GT diesel with 96500 miles i have had a steering wheel and exclamation sign come up on my display and a steering becomes stiff. I switch off ignition and start engine and everything works again as normal. this has happened about 4 times now, so what does anybody think is worn. ? It is electric steering . Could it be as simple as brushes on the commutator worn like on a dynamo ? Your help would be much appreciated.