Description
The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference, etc.).
NOISE
The following noise results from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other sources. It is not a malfunction.
The vehicle itself can be a source of noise, if noise prevention parts or electrical equipment are malfunctioning.
Check if noise is caused and/or changed by engine speed, ignition switch turned to each position, and operation of each piece of electrical equipment, and determine the cause.
NOTE: The source of the noise can be found easily by listening to the noise while removing the fuses of electrical components, one by one.
Type of Noise and Possible Cause

RELATED TO HANDS-FREE PHONE
| Symptom | Cause and Counter measure |
| Does not recognize cellular phone connection (No connection is displayed on the display at the guide). | Some Bluetooth enabled cellular phones may not be recognized by
the in-vehicle phone module.
Refer to "RELATED TO HANDS-FREE PHONE (Check Compatibility)" in AV-153, "Symptom Tabl |
| Cannot use hands-free phone. |
Customer will not be able to use a hands-free phone under the following conditions:
NOTE: While a cellular phone is connected through the Bluetooth wireless connection, the battery power of the cellular phone may discharge quicker than usual. The Bluetooth Hands-Free Phone System cannot charge cellular phon |
| The other party's voice cannot be heard by hands-free phone. | When the radio wave condition is not ideal or ambient sound is too loud, it may be difficult to hear the other person's voice during a call. |
| Poor sound quality. | Do not place the cellular phone in an area surrounded by metal or far away from the in-vehicle phone module to prevent tone quality degradation and wireless connection disruption. |
Audio system
PrecautionFront wiper motor lo circuit
Component Function Check
1. CHECK FRONT WIPER LO OPERATION
IPDM E/R AUTO ACTIVE TEST
Start IPDM E/R auto active test. Refer to PCS-11, "Diagnosis
Description".
Check that the front wiper operates at the LO operation.
CONSULT ACTIVE TEST
Select "FRONT WIPER" of IPDM E/R active test ...
Diagnosis system (AV control unit)
Diagnosis Description
MULTIFUNCTION SWITCH AND PRESET SWITCH SELF-DIAGNOSIS FUNCTION
The ON/OFF operation (continuity) of each switch in the multifunction switch
and preset switch can be checked.
Self-Diagnosis Mode
Press the BACK switch and the
switch of the 8-direction switches with ...
Clearing the programmed information
The following procedure clears the programmed
information from both buttons. Individual buttons
cannot be cleared. However, individual buttons
can be reprogrammed. For additional information,
refer to "Reprogramming a single
HomeLink button" in this section.
To clear all programming:
1. Press ...