FORD 2010 F-550 v.2 - Manual (Page 126)

Accessory delay
With accessory delay, the window switches may be used for up to
10 minutes after the ignition switch is turned to the off position or until
either front door is opened.
INTERIOR MIRROR
The interior rear view mirror has two pivot points on the support arm
which lets you adjust the mirror up or down and from side to side.
WARNING: Do not adjust the mirror while the vehicle is in
motion.
Automatic dimming interior rear view mirror (if equipped)
Your vehicle may be equipped with an interior rear view mirror which
has an auto-dimming function. The electronic day/night mirror will
change from the normal (high reflective) state to the non-glare
(darkened) state when bright lights (glare) reach the mirror. When the
mirror detects bright light from behind the vehicle, it will automatically
adjust (darken) to minimize glare.
The mirror will automatically return to the normal state whenever the
vehicle is placed in R (Reverse) to ensure a bright clear view when
backing up.
Do not block the sensors on the front and back of the interior
rear view mirror since this may impair proper mirror
performance.
Do not clean the housing or glass of any mirror with harsh
abrasives, fuel or other petroleum-based cleaning products.
Note: If equipped with a rearview camera system, a video image will be
displayed in the mirror or the navigation system (if equipped) when the
vehicle is put in R (Reverse). As you shift into any other gear from R
(Reverse), the image will remain for a few seconds and then turn off.
Refer to Rearview camera system in the Driving chapter.
Driver Controls
126
2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)