2010 Mercury Grand Marquis Owner's Manuals

Page 49 of 308

Mercury Grand Marquis 2010  Owners Manuals WARNING:Always remember to turn on your headlamps at
dusk or during inclement weather. The Daytime Running Light
(DRL) System does not activate your tail lamps and generally may not
provide adequate l

Page 50 of 308

Mercury Grand Marquis 2010  Owners Manuals •(1) 8 feet (2.4 meters)
•(2) Center height of lamp to
ground
•(3) 25 feet (7.6 meters)
•(4) Horizontal reference line
•(5) Center of headlamps
•(6) Center line of the vehicle
2. The cente

Page 51 of 308

Mercury Grand Marquis 2010  Owners Manuals 8. Locate the horizontal adjuster for
each headlamp. Turn it clockwise or
counterclockwise and place the left
edge of the high intensity area even
with the vertical line corresponding
to the headlamp

Page 52 of 308

Mercury Grand Marquis 2010  Owners Manuals To see a clearer light pattern for
adjusting, you may want to block
the light from one headlamp while
adjusting the other.
5. Locate the vertical adjuster on
each headlamp. Usinga4mm
wrench, turn the

Page 53 of 308

Mercury Grand Marquis 2010  Owners Manuals 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 p

Page 54 of 308

Mercury Grand Marquis 2010  Owners Manuals 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 “E” for
Europe to ensure lamp perfo

Page 55 of 308

Mercury Grand Marquis 2010  Owners Manuals Replacing headlamp bulbs (Crown Victoria only)
To remove the headlamp bulb:
1. Make sure the headlamp switch is in the off position, then open the
hood.
2. Remove the radiator cover by turning the thr

Page 56 of 308

Mercury Grand Marquis 2010  Owners Manuals To install the new bulb:
WARNING:Handle a halogen headlamp bulb carefully and keep
out of children’s reach. Grasp the bulb only by its plastic base
and do not touch the glass. The oil from your hand