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Kia Rio: Audio Unit Description - Audio - Body Electrical System - Kia Rio UB 2012-2020 Service ManualKia Rio: Audio Unit Description

Introduction to CD
If the temperature inside the car is too high, open the car windows for ventilation before using your car audio.
It is illegal to copy and use MP3/WMA/ AAC/WAVE files without permission. Use CDs that are created only by lawful means.
Do not apply volatile agents such as benzene and thinner, normal cleaners and magnetic sprays made for analogue disc onto CDs.
To prevent the disc surface from getting damaged. Hold and carry CDs by the edges or the edges of the center hole only.
Clean the disc surface with a piece of soft cloth before playback (wipe it from the center to the outside edge).
Do not damage the disc surface or attach pieces of sticky tape or paper onto it.
Make sure on undesirable matter other than CDs are inserted into the CD player (Do not insert more than one CD at a time).
Keep CDs in their cases after use to protect them from scratches or dirt.
Depending on the type of CD-R/CD-RW CDs, certain CDs may not operate normally according to manufacturing companies or making and recording methods. In such circumstances, if you still continue to use those CDs, they may cause the malfunction of your car audio system.

Playing an Incompatible Copy-Protected Audio CD
Some copy protected CDs, which do not comply with the international audio CD standards (Red Book), may not play on your car audio. Please note that if you try to play copy protected CDs and the CD player does not perform correctly the CDs maybe defective, not the CD player.
Introduction to USB

To use an external USB device, make sure the device is not connected when starting up the vehicle. Connect the device after starting up.
If you start the engine when the USB device is connected, it may damage the USB device. (USB flashdrives are very sensitive to electric shock.)
If the engine is started up or turned off while the external USB device is connected, the external USB device may not work.
It may not play non-authentic MP3 or WMA files.
It can only play MP3 files with the compression rate between 8Kbps~320Kbps.
It can only play WMA music files with the compression rate between 8Kbps~320Kbps.
Take precautions for static electricity when connecting or disconnecting the external USB device.
An encrypted MP3 PLAYER is not recognizable.
Depending on the condition of the external USB device, the connected external USB device can be unrecognizable.
When the formatted byte/sector setting of External USB device is not either 512BYTE or 2048BYTE, then the device will not be recognized.
Use only a USB device formatted to FAT 12/16/32.
USB devices without USB I/F authentication may not be recognizable.
Make sure the USB connection terminal does not come in contact with the human body or other objects.
If you repeatedly connect or disconnect the USB device in a short period of time, it may break the device.
You may hear a strange noise when connecting or disconnecting a USB device.
If you disconnect the external USB device during playback in USB mode, the external USB device can be damaged or may malfunction. Therefore, disconnect the external USB device when the audio is turned off or in another mode. (e.g, Radio, XM or CD)
Depending on the type and capacity of the external USB device or the type of the files stored in the device, there is a difference in the time taken for recognition of the device.
Do not use the USB device for purposes other than playing music files.
Use of USB accessories such as rechargers or heaters using USB I/F may lower performance or cause trouble.
If you use devices such as a USB hub purchased separately, the vehicle’s audio system may not recognize the USB device. In that case, connect the USB device directly to the multimedia terminal of the vehicle.
If the USB device is divided by logical drives, only the music files on the highest-priority drive are recognized by car audio.
Devices such as MP3 Player/ Cellular phone/Digital camera can be unrecognizable by standard USB I/F can be unrecognizable.
Some non-standard USB devices
(METAL COVER TYPE USB) can be unrecognizable.
Some USB flash memory readers (such as CF, SD, microSD, etc.) or external-HDD type devices can be unrecognizable.
Music files protected by DRM (DIGITAL RIGHTS MANAGEMENT) are not recognizable.
The data in the USB memory may be lost while using this audio. Always back up important data on a personal storage device.
Please avoid using USB memory products which can be used as key chains or cellular phone accessories as they could cause damage to the USB jack. Please make certain only to use plug type connector products as shown below.
Introduction to iPod

Some iPod models might not support the communication protocol and the files will not be played.
Supported iPod models:
iPod Mini
iPod 4th(Photo) ~ 6th(Classic) generation
iPod Nano 1st~4th generation
iPod Touch 1st~2nd generation
The order of search or playback of songs in the iPod can be different from the order searched in the audio system.
If the iPod disabled due to its own malfunction, reset the iPod. (Reset: Refer to iPod manual)
An iPod may not operate normally on low battery.
Some iPod devices, such as the iPhone, can be connected through the Bluetooth® interface. The device must have audio Bluetooth® capability (such as for stereo headphone Bluetooth®). The device can play, but it will not be controlled by the audio system.

The Hyundai iPod Power Cable is needed in order to operate iPod with the audio buttons on the audio system. The USB cable provided by Apple may cause malfunction and should not be used for Hyundai vehicles.
The Hyundai iPod Power Cable may be purchased through your Hyundai Dealership.
When connecting iPod with the iPod Power Cable, insert the connector to the multimedia socket completely. If not inserted completely, communications between iPod and audio may be interrupted.
When adjusting the sound effects of the iPod and the audio system, the sound effects of both devices will overlap and might reduce or distort the quality of the sound.
Deactivate (turn off) the equalizer function of an iPod when adjusting the audio system’s volume, and turn off the equalizer of the audio system when using the equalizer of an iPod.
When the iPod cable is connected, the system can be switched to AUX mode even without iPod device and may cause noise. Disconnect the iPod cable when you are not using the iPod device.
When not using iPod with car audio, detach the iPod cable from iPod. Otherwise, iPod may remain in accessory mode, and may not work properly.
Introduction to Bluetooth
■ What is Bluetooth®?
Bluetooth® is a wireless technology that allows multiple devices to be connected in a short range, low-powered devices like hands-free, stereo headset, wireless remocon, etc. For more information, visit the Bluetooth® website at
■ General Features
This audio system supports Bluetooth® hands-free and stereo-headset features.
HANDS-FREE feature: Making or receiving calls wirelessly through voice recognition.
STEREO-HEADSET feature: Playing music from cellular phones (that supports A2DP feature) wirelessly.
Voice recognition engine of the Bluetooth® system supports 3 types of languages:
US Spanish
Canadian French

The phone must be paired to the system before using Bluetooth® features.
Only one selected (linked) cellular phone can be used with the system at a time.
Some phones are not fully compatible with this system.
Introduction to SIRIUS radio
SIRIUS-Radio is a Satellite Based Radio Broadcast System that operates around 2.3 GHz from two 15,000 watts satellites; The service covers Continental US and Canada. But the service in Canada is not guaranteed.
Due to the limitations of satellite transmission, the signal is not able to penetrate buildings, so it cannot effectively cover dense urban areas. The terrestrial repeater network extends SDARS coverage and allows providers to reach the greatest number of subscribers and provide quality coverage. The repeaters receive the SIRIUS signal directly from the satellites and then re-transmit it to SIRIUS radios anywhere.
SIRIUS provides digitalized radio programs in terms of channels. Each channel is a program that the user can tune to. A category is a group of channels. Examples of categories are classical, news and sports.
SIRIUS is a paid service. That means users have to make a subscription to SIRIUS before they can enjoy the programs. However, SIRIUS does give some free-to-air channels. The users can listen to one of them without making any subscription.

Introduction to HD Radio
This audio system is able to receive standard analog FM/AM radio broadcasting as well as digital HD Radio FM/AM broadcasting.
HD Radio technology provides digital and analog reception using existing FM and AM broadcasting frequencies.
Currently, radio stations broadcasting an HD Radio signal are operating in a hybrid mode of both, analog and digital, in order to reach both receivers. In both modes, analog and digital, the broadcasted program contents is the same(except of multicasting, see below).
Eventually, as analog receivers are replaced by digital ones, radio stations may be able to turn off their analog broadcasting and use only the digital one.
HD Radio FM stations are able to broadcast multiple digital program streams(channels) over a single FM frequency.
For example, a HD Radio FM station can run a main channel of music and a sub channel of news(or even two different music channels) at one frequency. But only the program content of the main channel is also broadcasted analog.
HD Radio signal delay
"To overcome the delay that digital systems inherently produce, HD Radio technology first uses the audio signal of the analog broadcasting when you tune to an AM station or to the main channel of a FM station. After that, the system will blend from analog to digital signal.Normally, this blending is very smooth. If you experience a skip in program content of several seconds, the radio station has not implemented HD Radio broadcasting correctly. This is not a problem with your audio system.Due to the fact that sub channels are only broadcasting digital, blending from analog to digital signal is not possible if you tune to a sub channel. In this case playback of the sub channel starts after several seconds, this is a normal function."
Automatic switching between digital and analog broadcasting
"If the reception of the digital signal is lost, the system switches automatically to the analog signal. As soon as the digital signal is available again it will switch back. Due to the fact that sub channels are only broadcasted digital, first the system mutes playback if you have tuned to a sub channel and the digital signal is lost.Additionally, the main line shows the message No HD signal in place of station name.Second, after 1 minute with the digital signal lost, the system will automatically tune to the analog signal of the corresponding frequency."
Text based information
HD Radio stations are able to broadcast text based informations, e.g. station name, song title and artist name. The Driver Information System is able to display these informations.
Itroduction to UVO System
Kia UVO is all about letting you see more, do more and connect more.
With Microsoft's advanced voice-recognition technology, you get hands-free access to your music and Bluetooth®- enabled phone.
Color Touch Screen
The simple, intuitive menus on UVO's vivid color LCD touch screen make operation easy.
Advanced Voice Control
Microsoft speech technology can learn multiple users' speaking patterns, and responds quickly to long phrases.
Easy Feature Updates
With its flexible Windows® Embedded Automotive platform, the UVO system is incredibly easy to update.
HD Radio™ Technology
UVO offers available HD Radio™ Technology - the digital evolution of AM and FM radio.
Rear-Camera Display
Whenever you shift into reverse, UVO's rear-camera display lets you see behind your vehicle.
Digital Jukebox
UVO's in-dash hard drive is large enough to hold up to 700 megabytes of music.
There are small red, blue, or green dots on the screen
Because the LCD is manufactured with technology requiring high point density, a pixel deficiency or lighting may occur within 0.01% of total pixels.
The sound or image is not working
Has the Switch for the vehicle been turned to [ACC] or [ON]?
Has the SYSTEM been turned OFF?
The sound is not working
Has the volume been set to a low level?
Has the volume been set on mute?
When the power is turned on, the comers of the screen are dark
The display looking somewhat darker after prolonged periods of use is a normal phenomenon with LCD panels. It is not a malunction.
If the screen is very dark, contact your point of purchase or the nearest service center.
Sound is working from only one speaker
Is the position of FAL/BAL sound controls or volume adjusted to only one side?
Sound does not work in AUX mode
Is the audio connector jacks fully inserted into the AUX terminal?

Possible Cause
The power does not turn on.
The fuse is disconnected.
Replace with a suitable fuse. If the fuse is disconnected again, please contact your point of purchase or service center.
Device os not properly connected.
Check to see that the device has been properly connected.
The sound does not work.
The volume level is set the lowest level.
The connector is not properly connected.
The device is currently fast-forwarding, rewinding, scanning, or playing in slow mode.
Adjust the volume level.
Check the connection state.
The sound will not work when the device is fast-forwarding, rewinding, scanning, or playing in slow mode.
The sound quality is low.
The DISC is dirty or scratched.
Vibration is occurring from the position in which the conversion switch has been installed.
Wipe off water or dirt from the DISC. Do not use a disc which has been scratched.
The sound may be short-circuited and the image distorted if the device begins to vibrate. The device will return to normal operation once the vibration has stopped.

Possible Cause
The USB does not work.
USB memory is damaged.
USB memory has been contaminated.
A separately purchased USB HUB is being used.
A USB extension cable is being used.
A USB which is not a Metal Cover Type USB Memory is being used.
A HDD type, CF, SD Memory is being used.
There are no music files which can be played.
Please use after formatting the USB into FAT 12/16/32 format.
Remove any foreign substances on the contact surface of the USB memory and multimedia terminal.
Directly connect the USB memory with the multimedia terminal on the vehicle.
Directly connect the USB memory with the multimedia terminal on the vehicle.
Use a standard USB Memory.
Use a standard USB Memory.
Only MP3, WMA file formats are supported. Please use only the supported music file formats.
The iPod is not recognized even though it has been connected.
There are no titles which can be played.
The iPod firmware version has not been properly updated.
The iPod device does not recognize downloads.
Use iTunes to download and save MP3 files into the iPod.
Use iTunes to update the firmware version and reconnect the iPod with the device.
Reset the iPod and reconnect with the device.

Audio Unit Schematic Diagrams
System Block Diagram ...
Audio Unit Removal
   • Take care not to scratch the center fascia panel and related parts. ...
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