AUDIO AND VISUAL SYSTEM(for Radio and Display Type) PROBLEM SYMPTOMS TABLE

Tech Tips


  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Display Function
Symptom Suspected Area See page
Pressing power switch does not turn on system Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Black screen (No image appears on the screen) Proceed to "Black Screen"

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Radio and display receiver assembly

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Display does not dim (does not change to night screen) with tail switch on Proceed to "Display does not Dim when Light Control Switch is Turned ON"

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Proceed to "Illumination Circuit"

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Radio and display receiver assembly

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Power does not turn off (Screen remains on) Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Screen is distorted Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Screen flicker or color distortion Proceed to "Screen Flicker or Color Distortion"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Parking brake signal does not change in vehicle signal check mode Proceed to "Parking Brake Switch Circuit"

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Radio and display receiver assembly

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Reverse signal does not change in vehicle signal check mode CAN communication system (w/ Toyota Safety Sense)

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CAN communication system (w/o Toyota Safety Sense)

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Radio and display receiver assembly

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Panel Switch and Touch Panel Switch Function
Symptom Suspected Area See page
Illumination for panel switches does not come on with tail switch on Proceed to "Illumination for Panel Switch does not Come on with tail Switch ON"

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Proceed to "Illumination Circuit"

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Radio and display receiver assembly

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Panel switches do not function Proceed to "Panel Switches do not Function"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Touch panel switch does not function Proceed to "Touch Panel Switch does not Function"

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Proceed to "Radio Receiver Power Source Circuit"

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Radio and display receiver assembly

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Steering Pad Switch Function
Symptom Suspected Area See page
System cannot be operated by steering pad switch Proceed to "Panel Switches do not Function"

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Proceed to "Steering Pad Switch Circuit"

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Radio and display receiver assembly

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General Audio Function
Symptom Suspected Area See page
No sound can be heard from speakers Proceed to "No Sound can be Heard from Speakers"

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Proceed to "Speaker Circuit"

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Proceed to "Stereo Component Amplifier Power Source Circuit"*1

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Stereo component amplifier assembly*1

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Radio and display receiver assembly

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Abnormal noise occurs Proceed to "Noise Occurs"

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Radio and display receiver assembly

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Sound quality is bad in all modes (Volume is too low) Check that the ASL function is off -
Proceed to "Poor Sound Quality in All Modes (Low Volume)"

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Proceed to "Speaker Circuit"

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Proceed to "Stereo Component Amplifier Power Source Circuit"*1

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Stereo component amplifier assembly*1

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Radio and display receiver assembly

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ASL does not function Check that the ASL function is on -
Proceed to "Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter"

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Radio and display receiver assembly

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Voice guidance does not function Proceed to "Voice Guidance does not Function"

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Proceed to "Speaker Circuit"

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Radio and display receiver assembly

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FM or AM Radio Function
Symptom Suspected Area See page
Radio broadcast cannot be received or poor reception Proceed to "Radio Broadcast cannot be Received or Poor Reception"

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Radio broadcast can be received but radio station cannot be displayed (Some radio stations do not provide their name information) Radio and display receiver assembly

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"Bluetooth" Hands-free Function
Symptom Suspected Area See page
Bluetooth is inoperative Proceed to "Microphone Circuit between Microphone and Radio Receiver"

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Radio and display receiver assembly

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Cellular phone registration failure Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure"

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Radio and display receiver assembly

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Cellular phone cannot make outgoing/incoming calls or call in a certain place Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls"

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Radio and display receiver assembly

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Message that prompts to check the cellular phone is displayed Proceed to "Cellular Phone cannot Make Outgoing/Incoming Calls"

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Radio and display receiver assembly

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Phonebook data cannot be transferred manually or automatically Check the automatic phonebook download contact setting -
Enter "1234" into the "Bluetooth" phone (When transferring phonebook data, OBEX authentication may be required) -
Proceed to "Cellular Phone Registration Failure, Phonebook Transfer Failure"

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Radio and display receiver assembly

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Volume of other caller's voice is not at an appropriate volume level, there is noise, sound quality is poor or other caller's voice cannot be heard Proceed to "Check Hands-free Voice Quality and Volume Setting" in Operation Check

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Proceed to "The Other Caller's Voice cannot be Heard, is too Quiet, or Distorted"

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Radio and display receiver assembly

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Other caller cannot hear your voice at an appropriate volume level, there is noise or an echo, sound quality is poor or other caller cannot hear your voice Proceed to "Check Hands-free Voice Quality and Volume Setting" in Operation Check

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Proceed to "The Other Caller cannot Hear Your Voice, or Your Voice is too Quiet or Distorted"

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Proceed to "Microphone Circuit between Microphone and Radio Receiver"

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Radio and display receiver assembly

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"Bluetooth" Audio Function
Symptom Suspected Area See page
Portable player cannot be registered Proceed to "Portable Player cannot be Registered"

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Radio and display receiver assembly

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Portable player cannot be connected manually/automatically Proceed to "Portable Player cannot be Registered"

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Proceed to "Portable Player cannot be Connected Manually/Automatically"

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Radio and display receiver assembly

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Cellular phone with portable audio function cannot be recognized as "Bluetooth" audio device even when connected using "Bluetooth" Proceed to "Portable Player cannot be Registered"

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Proceed to "Portable Player cannot be Connected Manually/Automatically"

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Radio and display receiver assembly

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Sound of portable player cannot be heard from speakers, or sound is low Proceed to "Sound of Portable Player cannot be Heard from Speakers or Sound is Low"

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Radio and display receiver assembly

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Portable player does not play even after "Bluetooth" audio mode is selected Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"

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Radio and display receiver assembly

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Portable player does not play Proceed to "Does not Play even after Bluetooth Audio Mode is Selected"

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Radio and display receiver assembly

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Track information such as track number, track name and elapsed play time and playlist is not displayed Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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Operation switches for portable player such as play, pause, repeat, random and scan are not displayed Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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Battery condition of portable player is not displayed Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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"Bluetooth" signal condition is not displayed Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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Portable player cannot pause, select file, fast forward, fast rewind, random play or scan Proceed to "Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device"

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Radio and display receiver assembly

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Noise occurs or sound skips when portable player play Proceed to "Noise Occurs or Sound Skips when Portable Player Plays"

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Radio and display receiver assembly

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Registered device cannot be deleted Proceed to "Registered Device cannot be Deleted"

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Radio and display receiver assembly

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USB Audio System Function
Symptom Suspected Area See page
USB audio system sound cannot be heard or sound quality is bad (USB connector is used) Proceed to "Data Signal Circuit between Radio Receiver and Stereo Jack Adapter"

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No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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USB device or "iPod" is not recognized Proceed to "USB Audio System Recognition/Play Error"

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No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Track information such as track, artist and album names are not displayed Proceed to "USB Audio System Recognition/Play Error"

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No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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USB device or "iPod" is recognized but cannot play or cannot play in a sorted order Proceed to "USB Audio System Recognition/Play Error"

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No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Album cover art cannot be displayed Check that display cover art on the "iPod" settings screen is set to on -
Check that a JPEG file is used for the cover art -
"iPod" battery cannot be charged Proceed to "USB Audio System Recognition/Play Error"

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No. 1 stereo jack adapter assembly

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Radio and display receiver assembly

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Fuel Consumption Function
Symptom Suspected Area See page
Graph is not displayed on "Trip Information" screen Recheck with the hybrid system operating -
Radio and display receiver assembly

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Cruise range is not displayed on "Trip Information" screen Turn the ignition switch to ON (READY) and recheck -
Radio and display receiver assembly

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Graph is not updated on "Past record" screen even though "Clear" is selected Turn the ignition switch to ON (READY) and recheck -
Radio and display receiver assembly

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Graph is not displayed on "Past record" screen Turn the ignition switch to ON (READY) and recheck -
Radio and display receiver assembly

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DAB (Digital Audio Broadcast) Function (w/ DAB Function)
Symptom Suspected Area See page
Sound cannot be heard/sound quality is poor/ loud noise occurs only when DAB function is used (when receiving DAB-TA, sound temporarily may not be heard) Operate the volume switch and turn up the volume level -
Proceed to "Check DAB Reception" in Operation Check

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Antenna cord sub-assembly

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No. 2 antenna cord sub-assembly

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No. 1 amplifier antenna assembly

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Roof antenna pole sub-assembly

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Radio and display receiver assembly

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When time shift mode is not selected, DAB-TA cannot be used Check if DAB-TA function is set to on -
Check that "TP" icon is displayed on the screen -
Check if similar symptoms occur with another vehicle -
Radio and display receiver assembly

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DAB-DAB Link, DAB-FM Link or Time- Shift cannot be used Check if each function is set to on -
Check if similar symptoms occur when receiving other broadcasts -
Radio and display receiver assembly

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"MirrorLink" Function (w/ "MirrorLink" Function)
Symptom Suspected Area See page
Although USB device or "iPod" is recognized, "MirrorLink" function cannot be started (smartphone battery can be charged) Proceed to "MirrorLink Function cannot be Started"

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Image is not displayed Proceed to "MirrorLink Image is not Displayed"

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Sound cannot be heard Proceed to "MirrorLink Sound cannot be Heard"

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"MirrorLink" is inoperative only when smartphone is connected to head unit Proceed to "MirrorLink is Inoperative"

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