Radio reception factors
There are certain factors that may effect your radio reception.
•Distance/strength.The further an FM signal travels, the weaker it is.
The listenable range of the average FM station is approximately 40 km
(24 miles). This range can be affected by “signal modulation.” Signal
modulation is a process radio stations use to increase their
strength/volume relative to other stations.
•Terrain.Hills, mountains and tall buildings between your vehicle’s
antenna and the radio station signal can cause FM reception problems.
Static can be caused on AM stations by power lines, electric fences,
traffic lights and thunderstorms. Moving away from an interfering
structure (out of its “shadow”) returns your reception to normal.
•Station overload.Weak signals are sometimes captured by stronger
signals when you pass a broadcast tower. A stronger signal may
temporarily overtake a weaker signal and play while the weak station
frequency is displayed.
Principles of GPS (global positioning system) operation
Your system directs you based on information derived from global
positioning satellites, road maps stored on the DVD, sensors in your
vehicle and the desired destination. The system compiles all necessary
information to guide you to your selected destination. Space satellites
determine the vehicle’s current location and transmit position and time
signals to your car.
If the vehicle has been parked for a long period of time, the navigation
function may be temporarily unresponsive. The navigation system will
operate reliably again once GPS reception is available for a few minutes.
Limited GPS reception
System performance may be adversely affected if GPS reception is
interrupted or interference occurs over a distance of several miles. The
following are possible causes for GPS reception being interrupted. If the
vehicle is:
•in multi-story parking garages
•in tunnels and under bridges
•inside or in between buildings
•by forests or tree-lined avenues
•in heavy rain showers and thunderstorms
•in valleys and in mountainous regions
2007 Town Car(tow)
Owners Guide (post-2002-fmt)
USA(fus)
Entertainment Systems
90
bulb replacement
specifications chart ................102
daytime running light ...............98
fog lamps ...................................98
headlamps .................................97
headlamps, flash to pass ..........98
instrument panel, dimming .....99
interior lamps .................101–103
replacing bulbs .......................103
Lane change indicator
(see Turn signal) ......................101
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........227
Load limits .................................213
Locks
childproof ................................140
doors ........................................138
Lubricant specifications ...........309
Lug nuts ....................................255
Lumbar support, seats .............156
M
Message center .........................124
english/metric button .............129
system check button ..............128
warning messages ...................132
Mirrors .......................................113
automatic dimming rearview
mirror ......................................113
fold away .................................114
heated ......................................114
programmable memory ..........144
side view mirrors (power) .....113
Moon roof ..................................119
Motorcraft parts ........274, 291, 307
N
Navigation system .......................30cd functions ..............................47
destination mode ......................71
DVD location .............................91
map mode .................................51
quick start .................................32
radio functions ..........................39
O
Octane rating ............................296
Oil (see Engine oil) ..................280
P
Parking brake ............................228
Parts (see Motorcraft parts) ....307
Passenger Occupant
Classification Sensor .................162
Pedals (see Power adjustable
foot pedals) ...............................114
Power adjustable foot pedals ...114
Power distribution box
(see Fuses) ...............................245
Power door locks ......................138
Power mirrors ...........................113
Power point ...............................110
Power steering ..........................230
fluid, checking and adding ....303
fluid, refill capacity ................309
Power trunk ......................135–136
Power Windows .........................111
R
Radio ................................15, 18, 24
Rear window defroster ...............96
Relays ........................................242
2007 Town Car(tow)
Owners Guide (post-2002-fmt)
USA(fus)
Index
320
