SymptomPossible cause Possible solution
The voice is cut out or noise is heard during
a call. The wireless Bluetooth® connection may be
disrupted depending on the location of the
cellular phone. Do not place the cellular phone in an area surrounded
by metal or far away from the in-vehicle hands-free
phone system. Do not place a cellular phone close to
the seats or your body.
When a cellular phone is operated to make
a call, the hands-free function becomes
unavailable. Some models of a cellular phone do not switch
to the hands-free mode when they are operated
to make a call. This is not a malfunction. Make a call again using the
hands-free function.
The other party’s voice cannot be heard.
There is no ring tone. The volume level is set to the minimum. Adjust the volume level.
A cellular phone is not connected.
Check the registration procedure, and then register
the cellular phone again.
Each volume level (ring tone, incoming
voice or outgoing voice) is different. Each volume level is not adjusted properly. Adjust each volume level properly.
The antenna display is different between
the in-vehicle screen and a cellular phone
screen. Making or receiving a call is un-
available even though the antenna display
shows that it is possible to do so. The antenna display varies depending on the
model of cellular phone.
This does not indicate a malfunction. The antenna
display and remaining battery level shown on the in-
vehicle screen may be different from those shown on
the cellular phone screen. Use them as a reference.
A voice cannot be heard clearly when using
a cellular phone behind tall buildings. Some structures such as tall buildings, etc. may
cause irregular reflection of radio waves or
completely shut out radio waves that are used
for cellular phones. This is not a malfunction.
Noise is heard when using a cellular phone
under/near areas of elevated railroads,
high voltage electric power cables, traffic
signals, neon billboards, etc. Electromagnetic waves that are generated from
radio devices may adversely affect the cellular
phone.
This is not a malfunction.
Noise is heard in the sound from the audio
system while using a cellular phone. Radio waves that are generated from a cellular
phone may adversely affect the sound from the
audio system. This is not a malfunction.
8. Troubleshooting guide
8-17
