PTY ButtonSEEK
When the desired program is obtained, press theSEEK
button within five seconds. The channel will change to
the next channel that matches the program type selected.
Satellite Antenna
To ensure optimum reception, do not place items on the
roof around the rooftop antenna location. Metal objects
placed within the line of sight of the antenna will cause
decreased performance. Larger luggage items should be
placed as far forward as possible. Do not place items
directly on or above the antenna.
Reception Quality
Satellite reception may be interrupted due to one of the
following reasons.
•The vehicle is parked in an underground parking
structure or under a physical obstacle.
•Dense tree coverage may interrupt reception in the
form of short audio mutes.
•Driving under wide bridges or along tall buildings can
cause intermittent reception.
•Placing objects over or too close to the antenna can
cause signal blockage.
NAVIGATION SYSTEM (SALES CODE REC) — IF
EQUIPPED
NOTE:
The radio sales code is located on the lower
right side of your radio faceplate.
Navigation Radio with CD Player and MP3 Capability
(REC) - combines a Global-Positioning System-based
navigation system with a color screen to provide maps,
turn identification, selection menus and instructions for
UNDERSTANDING YOUR INSTRUMENT PANEL 171
4
RADIO GENERAL INFORMATION
Radio Broadcast Signals
Your new radio will provide excellent reception under
most operating conditions. Like any system, however, car
radios have performance limitations, due to mobile op-
eration and natural phenomena, which might lead you to
believe your sound system is malfunctioning. To help
you understand and save you concern about these “ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
Two Types of Signals
There are two basic types of radio signals... AM or
Amplitude Modulation, in which the transmitted sound
causes the amplitude, or height, of the radio waves to
vary... and FM or Frequency Modulation, in which the
frequency of the wave is varied to carry the sound.
Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude,and thus remain a part of the AM reception. They
interfere very little with the frequency variations that
carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the reception relatively clear,
which is the major feature of FM radio.
NOTE:On vehicles so equipped the radio, steering
wheel radio controls and 6 disc CD/DVD changer if
equipped, will remain active for 10 minutes after the
ignition has been turned off, and the driver door has not
been opened. This feature is programmable through the
electronic vehicle information center (EVIC) — if
equipped. Refer to “Delay Power Off to Accessories Until
Exit” under “Personal Settings” in the Electronic Vehicle
Information Center section for details.
174 UNDERSTANDING YOUR INSTRUMENT PANEL