Troubleshooting table
75
Problem Cause Measure
The camera does not acquire the
speed limits or not very good.
The camera is not correctly
aligned.
Align the camera. (Ch. "Aligning
the camera")
Unfavourable lighting condi-
tions (e.g. backlight, darkness)
and weather conditions (e.g.
heavy snowfall, thunderstorm)
or unfavourable positions of or
dirt on the signs can interfere
with signpost recognition.
–
Matrix signing (signposts with
illuminated display) cannot be
recognised.
At high speeds, the signpost
recognition may be impaired.
The device has no or only a very
poor GPS reception.
After switch-on, the device re-
quires approx. 1 minute until it
is ready for navigation. During
the initial switch-on, it requires
a longer time and a strong GPS
signal.
Move to the outside and place
the device on high ground. Your
device is operational again after
no more than 2 to 5 minutes. At
that time, the navigation is also
possible under less than perfect
conditions.
The GPS reception is generally
limited or impossible inside of
buildings.
Heavily metal-evaporated wind-
shields can interfere with the
GPS reception.
You may attempt to install the
device in a different location in
the vehicle.
Connect an external GPS an-
tenna.
Refl ection and shading, e.g. due
to high-rises, tunnels, moun-
tains or heavy foliage.
The device must have a clear
path to the sky. Wait until the
GPS reception is available again.
The route guidance is then con-
tinued automatically.
Heavy snowfall and (thunder)
storms.
Transport of the vehicle by car-
sleeper train or ferry.
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