See also:

Blank Screen
The message center display will be blank after cycling through all of the Info menu items. ...

BLIS and/or CTA fault operation
If the BLIS and/or CTA senses a fault on either the left or right sensor, the BLIS alert indicator will go on and remain on and the message center will display BLIND SPOT SYSTEM FAULT or CROSS TRA ...

Driving style — good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change a number of variables and improve your fuel economy. ...