2011 Mercury Grand Marquis Owner Guide 1st Printing - Page 52

Lights If equipped with remote keyless entry, the courtesy lamp will illuminate whenever any door is opened and will remain on for 25 seconds after the door is shut or when the ignition is turned to the on position. Rear courtesy/reading lamps (if equipped) Rotate the lens to illuminate the lamp. With the lens in the flat position, the courtesy lamp lights when: • any door is opened. • the panel dimmer thumbwheel is rotated fully to the right, past detent. 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 a dealer for service if any of the above conditions of unacceptable moisture are present. Using the right bulbs Replacement bulbs are specified in the chart below. Headlamp bulbs must be marked with an authorized "D.O.T." for North America and an 52 2011 Crown Victoria (cro) Owners Guide, 1st Printing USA (fus)