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Foglamp control
The foglamps can be turned on
when the headlamp control is pulled
toward you and is in any of the
following positions:
•Parking lamps
•Low beams
•Autolamps
Daytime running lamps (DRL) (if equipped)
The daytime running light system turns the headlamps on, with a
reduced light output, when:
•the ignition is in RUN,
•the transmission is not in P (Park),
•the high beams are not in the flash to pass position and
•the headlamp system is not turned on by another feature such as
using the headlamp control or Autolamp.
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 lighting during these conditions. Failure to activate your
headlamps under these conditions may result in a collision.
High beams
Push the lever toward the
instrument panel to activate. Pull
the lever towards you to deactivate.
2003 Town Car(tow)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Page 77 of 272

•(1) Eight feet
•(2) Center height of lamp to
ground
•(3) Twenty five feet
•(4) Horizontal reference line
2. Measure the height of the headlamp bulb center from the ground and
mark a 2.5 meter (8 foot) horizontal reference line on the vertical wall or
screen at this height (a piece of masking tape works well).
3. Turn on the low beam headlamps to illuminate the wall or screen and
open the hood.
4. On the wall or screen you will
observe an area of high intensity
light. The top of the high intensity
area should touch the horizontal
reference line, if not, the beam will
need to be adjusted.
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 adjuster either
clockwise (to adjust down) or
counterclockwise (to adjust up).
The horizontal edge of the brighter
light should touch the horizontal
reference line.
6. HORIZONTAL AIM IS NOT REQUIRED FOR THIS VEHICLE AND IS
NON-ADJUSTABLE.
7. Close the hood and turn off the lamps.
2003 Town Car(tow)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Page 79 of 272

BULBS
Replacing exterior bulbs
Check the operation of all the bulbs frequently.
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 assure lamp performance, light brightness and pattern
and safe visibility. The correct bulbs will not damage the lamp assembly
or void the lamp assembly warranty and will provide quality bulb burn
time.
Function Trade Number
Headlamp (Hi beam) 9005
Headlamp (Lo beam)* H7
Park and turn lamp (front) 3457 AK
Sidemarker (front) 168
Backup lamp 3156 K
Stop, tail, turn and sidemarker lamp (rear) 3157 K
Cornering lamp 3156 K
License plate lamp 168
High-mount brakelamp - Stop** 20 (LEDS)
High-mount brakelamp - Backup Aid** 6 (LEDS)
Luggage compartment lamp 212-2
Map lamp 578
Visor vanity lamp 168
Door courtesy lamp 904
Glove compartment 194
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your dealer.
* For vehicles with HID lamps, see your dealer for service.
**When replacing the center high mount stop lamp, see your dealer for
replacement bulbs.
Replacing the interior bulbs
Check the operation of all bulbs frequently.
2003 Town Car(tow)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Replacing headlamp bulbs
To remove the headlamp bulb:
1. Make sure headlamp switch is in
OFF position.
2. Remove the protective bulb cover
by loosening and removing the five
screws.
3. Rotate the light bulb socket
counter clockwise and pull it
straight out from the assembly.
4. Remove the old bulb from the
lamp assembly by pulling it straight
out of the bulb socket.
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.
5. To complete installation, follow the removal procedure in reverse
order.
Note:To ensure a good seal, attach the bulb cap and partially tighten
the screws. Check to ensure the gasket is fully centered. Finish
tightening the screws in a criss-cross pattern (upper-left, lower right
etc.)
Replacing HID headlamp bulbs (if equipped)
The low beam headlamps on your vehicle use a“high intensity discharge”
source. These lamps operate at a high voltage. When the bulb is burned
out, the bulb and starter capsule assembly must be replaced by your
dealer or a qualified technician.
Replacing front parking lamp/turn signal bulbs
The park/turn lamp bulbs can be replaced with out removing the
headlamp assembly.
1. Make sure headlamp switch is in OFF position, then open the hood.
2. Remove the protective bulb cover by removing the three retaining
bolts.
2003 Town Car(tow)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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The fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
1 10A Lighting Control Module (LCM),
Left-hand low beam headlamp
2 15A Fog lamps
3 10A LCM, Right-hand low beam
headlamp
4 7.5A Instrument cluster
5 7.5A LCM, Instrument panel light
6 15A EATC, Heated seats
7 15A LCM, Autolamps/PAT/Sunload
sensors, Park/Tail lamps,
Cornering lamps
8 10A Shift lock, Speed control, Air
suspension
9 20A Hi beam headlamps (LCM)
10 10A Restraint Control Module (RCM),
Air bags
27 25
26 2423 21
2219
20
18 16
17 1514 12
1310
33
31
2932
30
28 11
97
8653
41
2RELAY
1
2003 Town Car(tow)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
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