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, use the cellular phone at a place as far as possible from the audio equipment.
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 vehicle's electrical system and adversely affect safe operation of the vehicle.
WARNING
Do not use a cellular phone while driving. Stop at a safe location to use a cellular phone.
Kia Cee'd JD Service Manual: Cowl Cross Bar Assembly Components and components location
Component Location
1. Cowl cross bar assembly
...
Kia Cee'd JD Owners Manual: Caring for Disc
If the temperature inside the car is
too high, open the car windows to
ventilate before using the system.
It is illegal to copy and use
MP3/WMA files without permission.
Use CDs that are created
only by lawful means.
Do not apply volatile agents, such
as benzene and thinner, ...