23
Troubleshooting
The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below, check
the connection and operating procedures.
The operation buttons do not function.
The operation may take time while a map is
displayed.
The unit does not turn on.
t
Check that the ignition switch is in the ON
position.
t
Check the connection between the car
battery adaptor and cigarette lighter socket.
t
If the ambient temperature is very high, the
protection circuit may activate and prevent
the unit from turning on. Allow the unit to
cool off, and turn it on.
t
Check the fuse in the car battery adaptor.
The remote does not function.
• There are obstacles between the card remote
commander and the remote receptor on the
unit.
• The distance between the card remote
commander and the unit is too far.
• The card remote commander is not pointed
at the remote receptor on the unit.
• The batteries in the card remote commander
are weak. For details, see “Replacing the
lithium battery of the card remote
commander” on page 21.
GPS signal cannot be received.
• The system cannot receive GPS signals due
to an obstruction.
t
Move your car somewhere clear.
• GPS signal reception is low.
t
Check the GPS signal values.
t
An external GPS aerial (not supplied)
may be required for a heated or heat
reflective windscreen.
• There is an obstacle in front of the GPS
receiver.
t
Install the unit where the signal is not
interrupted by the body of the car, etc. For
details on the unit installation, see
“Installing the unit” on page 7.
t
Check that the GPS receiver is pulled out
to a horizontal position. For details, see
“Installing the unit” on page 7.
• Signal may not be received if a window film
is attached. In that case, use an external GPS
aerial (not supplied).
The car position on the map does not match
the current road.
The error margin of the signal from the GPS
satellites is too large. A maximum error
margin of a few hundred metres can exist.
The guidance patterns cannot be changed
by pressing
.
The current car position does not appear on the
route right after guidance started.
t
Wait until the current car position appears
on the road map.
The voice guidance cannot be heard.
The volume is set too low.
t
Press and hold
w
+ on the unit or card
remote commander.
The LCD becomes very bright/dark.
The internal temperature of the unit is
regulated by automatically adjusting the
brightness of the LCD, depending on whether
the ambient temperature is very high or low. In
extreme temperatures beyond the adjustable
range, a message will appear, and the warm up
mode will be turned on, or the power will be
turned off.
