Acura 2009 MDX Navigation System Navigation Manual page 108

• To allow the sunlight sensor to function properly, avoid blocking the sensor with loose articles (see the vehicle Owner's
manual for location of sensor).
• Remember that once the Display mode button
vehicle is restarted.
NOTE:
Loose articles on the front dash can block or interfere with the operation of the sunlight sensor. See the vehicle Owner's manual
for additional information regarding the dash brightness adjustment.
is selected, the other display mode controls are overridden until the
System Setup
Navigation System 107