Hyundai Santa Fe Sport Owner's Manual page 283

Features of your vehicle
Using a cellular phone or a two-
way radio
When a cellular phone is used inside
the vehicle, noise may be produced
from the audio system. This does not
mean that something is wrong with
the audio equipment. In such a case,
try to operate mobile devices as far
from the audio equipment as possible.
CAUTION
When using a communication
system such as a cellular phone
or a radio set inside the vehicle,
a separate external antenna
must be fitted. When a cellular
phone or a radio set is used
with an internal antenna alone,
it may interfere with the vehi-
cle's electrical system and
adversely affect safe operation
of the vehicle.
4 186
WARNING
Do not use a cellular phone
while driving. Stop at a safe
location to use a cellular phone.