FORD 2007 Expedition v.3 - Manual (Page 104)

Heated outside mirrors (if equipped)
Both mirrors are heated automatically to remove ice, mist and fog when
the rear window defrost is activated.
Type A
Type B
Do not remove ice from the mirrors with a scraper or attempt to
readjust the mirror glass if it is frozen in place. These actions
could cause damage to the glass and mirrors.
Signal indicator mirrors (if equipped)
When the turn signal is activated,
the lower portion of the mirror
housing will blink.
POWER FOLD
2007 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)
Driver Controls
104