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nüvi 600/650 Owner’s Manual
a
PPendix
Troubleshooting
Problem/Question
Solution/Answer
My nüvi never gets 
satellite signals.
Take your nüvi outside, away from tall buildings and trees. 
Remain stationary for several minutes. 
How do I know my nüvi 
is in USB Mass Storage 
Mode?
When your nüvi is in USB Mass Storage Mode, a picture of a nüvi 
connected to a computer is shown. Also, you should see two new 
removable disk drives listed in 
My Computer
My computer never 
senses that the nüvi is 
connected.
1.  Unplug the USB cable from your computer. 
2.  Turn the nüvi off. 
3.   Plug the USB cable into your computer and your nüvi. The 
nüvi automatically turns on and goes into USB Mass Storage 
Mode. 
I cannot see any new 
removable drives in my 
list of drives.
If you have several network drives mapped on your computer, 
Windows may have trouble assigning drive letters to your nüvi 
drives. See your operating system’s help file to learn how to 
map/assign drive letters. 
The suction cup will not 
stay on my windshield.
Clean the suction cup and windshield with rubbing alcohol. Dry 
with a clean, dry cloth. Mount the suction cup as described on 
.
The touch screen is not 
responding to my taps 
properly.
1.  Turn the unit off. 
2.   Press and hold the   
Power
 button for about one minute 
until the Calibration screen appears. 
3.  Follow the on-screen instructions.
I cannot get traffic 
information. 
Note: You must have a 
GTM traffic receiver to 
receive traffic data.
Verify that you are in a coverage area. You must be in a coverage 
area to get the traffic information for that area. 
Verify that the FM TMC Traffic Receiver is connected to the 
power connector on the cradle and also connected to a power 
outlet in your vehicle.