Mazda 2010 Mazda3 4-Door Owner's Manual page 236

Interior Comfort
Audio System
NOTE
When leaving your vehicle unattended, we
recommend that you remove the antenna and
store it inside the vehicle.
6-18
Operating Tips for Audio
System
WARNING
Do not adjust the audio control
switches while driving the vehicle:
Adjusting the audio while driving the
vehicle is dangerous as it could
distract your attention from the
vehicle operation which could lead to
a serious accident. Always adjust the
audio while the vehicle is stopped.
Even if the audio control switches are
equipped on the steering wheel, learn
to use the switches without looking
down at them so that you can keep
your maximum attention on the road
while driving the vehicle.
CAUTION
For the purposes of safe driving,
adjust the audio volume to a level
that allows you to hear sounds
outside of the vehicle including car
horns and particularly emergency
vehicle sirens.
NOTE
To prevent the battery from being
l
discharged, do not leave the audio system
on for a long period of time when the
engine is not running.
If a cellular phone or CB radio is used in
l
or near the vehicle, it could cause noise to
occur from the audio system, however, this
does not indicate that the system has been
damaged.