Bulb Replacement; Lamp Assembly Condensation - Ford 2011 F-250 Owner's Manual

To turn on the map lamps, press the
lamp.
The dome lamp turns on when:
• any door is opened,
• the instrument panel dimmer switch is rotated up until the courtesy
lamps come on, and
• any of the remote entry controls are pressed and the ignition is off.

BULB REPLACEMENT

Lamp assembly condensation

Exterior lamps are vented to accommodate normal changes in pressure.
Condensation can be a natural by-product of this design. When moist air
enters the lamp assembly through the vents, there is a possibility that
condensation can occur when the temperature is cold. When normal
condensation occurs, a thin film of mist can form on the interior of the
lens. The thin mist eventually clears and exits through the vents during
normal operation. Clearing time may take as long as 48 hours under dry
weather conditions.
Examples of acceptable condensation are:
• Presence of thin mist (no streaks, drip marks or droplets)
• Fine mist covers less than 50% of the lens
Examples of unacceptable moisture (usually caused by a lamp water
leak) are:
• Water puddle inside the lamp
• Large water droplets, drip marks or streaks present on the interior of
the lens
Take your vehicle to dealer for service if any of the above conditions of
unacceptable moisture are present.
2011 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Lights
91