2010 Mercury Mountaineer lights

To adjust the headlamps:
1. Park your vehicle on a level surface about 25 feet (7.6 meters) away
from a vertical plain surface (3). Check your headlamp alignment at
night or in a dark area so that you can see the headlamp beam pattern.
•(1) 8 feet (2.4 m)
•(2) Center height of lamp to
ground
•(3) 25 feet (7.6 m)
•(4) Horizontal reference line
2. The center of the headlamp has a
3.0 mm circle on the lens. Measure
the height from the center of your
headlamp to the ground (2) and
mark an 8 foot (2.4 m) long
horizontal line on the plain surface (1) at this height (masking tape
works well).
3. Turn on the low beam headlamps.
The brightest part of the light
should be below the horizontal line
(4). If it is above the line the
headlamp will need to be adjusted.
4. Open the hood.
5. Locate the vertical adjuster for
each headlamp. Adjust the aim by
turning the adjuster control either
clockwise (to adjust down) or
counterclockwise (to adjust up).
Note:Usea4mmsocket or box
wrench to turn the vertical adjuster
control.
6. Horizontal aiming is not required
for this vehicle and is
non-adjustable.
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

TURN SIGNAL CONTROL
•Push down to activate the left
turn signal.
•Push up to activate the right turn
signal.
INTERIOR LAMPS
Dome/reading lamps
The dome lamp lights when:
•any door is opened.
•the instrument panel dimmer
switch is rotated up until the
courtesy lamps come on.
•any of the remote entry controls
are pressed and the ignition is
off.
The reading portion, the two outer lights, can only be toggled on and off
at the lamp.
The front map lamps are located in
the overhead console (if equipped).
Press the controls on either side of
each map lamp to activate the
lamps.
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2010 Mountaineer(mnt)
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USA(fus)

Cargo/reading lamps
The dome portion of the lamp or
the center light can be turned on
when the panel dimmer control is
rotated fully up or when a door is
opened.
The rear dome lamp can be turned
on or off by sliding the control.
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.
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 performance, light brightness and pattern
and safe visibility. Using incorrect bulbs may damage the lamp assembly
or void the lamp assembly warranty or may not provide quality bulb burn
time.
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

Function Number of bulbs Trade number
Park/turn lamps
(front)2
3157 A (amber)
Headlamps 2 H13
Rear stop/tail lamps 2 L1224R
Rear turn lamps 2 3157 A (amber)
Rear license plate
lamps2
168
Backup lamp 2 3156K
High-mount brake
lamps5
W5WL
Side mounted turn
signal2
WY5W (amber)
Front sidemarker 2 194
Rear sidemarker 2 194
Fog lamp 2 9145
Cargo lamp 1 211-2
Interior overhead lamp 1 912 (906)
Front door courtesy
lamp1
168
Map lamps 2 168 (T10)
Ashtray lamp 1 161
Visor vanity lamp -
Slide on rail system
(SOR)2
A6224PF
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your authorized dealer.
Replacing interior bulbs
Check the operation of the bulbs frequently. To replace any of the
interior bulbs, see a dealer or qualified technician.
Replacing exterior bulbs
Check the operation of all the bulbs frequently.
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

Replacing headlamp bulbs
Do not touch the glass of a halogen bulb.
1. Turn off the headlamps and open
the hood.
2. Remove the two retainer pins,
then pull headlamp forward.
3. Disconnect the electrical
connector.
4. Remove the old bulb by turning
counterclockwise and pull it out.
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 could cause the
bulb to break the next time the headlamps are operated.
Reverse steps to reinstall bulb(s).
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

Replacing front parking/turn signal bulbs
1. Turn off the headlamps and open
the hood.
2. Remove the two headlamp
retainer pins, then pull the
headlamp forward.
3. Rotate the bulb socket
counterclockwise and remove it
from the lamp assembly.
4. Carefully pull the old bulb out of
the lamp assembly.
Reverse steps to reinstall bulb(s).
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

Replacing side-mounted turn signal bulbs
1. Turn the headlamp switch off.
2. Carefully pry the lamp assembly
away from the fender.
3. Rotate the bulb socket
counterclockwise to remove it from
the lamp assembly.
4. Pull the bulb straight out.
Reverse steps to reinstall bulb(s).
Replacing front/rear side marker bulbs
1. Turn the headlamp switch off.
2. Reach under the bumper and
rotate the bulb socket
counterclockwise to remove it.
3. Pull the bulb straight out.
Reverse steps to reinstall bulb(s).
Replacing tail/brake/turn/backup lamp bulbs
1. Turn the headlamp switch off and
open the liftgate.
2. Remove the two bolts from the
lamp assembly.
3. Remove the lamp assembly by
pulling it away from the vehicle at
an angle to disengage the two snap
attachments.
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)

4. Rotate the bulb socket
counterclockwise and remove it
from the lamp assembly.
5. Pull the bulb straight out of the
socket.
Note:Disconnect the LED brake
lamp from the electrical connector
and replace the LED assembly.
Reverse steps to reinstall bulb(s).
Replacing fog lamp bulbs
1. Make sure the headlamp switch is
off.
2. Remove the bulb socket from the
fog lamp by turning it
counterclockwise.
3. Disconnect the electrical
connector.
Reverse steps to reinstall bulb(s).
Replacing license plate lamp bulbs
1. Make sure the headlamp switch is
off.
2. Remove the lamp assembly by
depressing the small tab and rocking
the lamp assembly out.
3. Remove the bulb socket from the
lamp assembly by turning
counterclockwise and pull the bulb
straight out.
Reverse steps to reinstall bulb(s).
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2010 Mountaineer(mnt)
Owners Guide(own2002), 1st Printing
USA(fus)