It must be used outdoors, in an open area without tall buildings or trees too close to where you are. Keep in mind that even if your device is working correctly, it may take a couple of minutes for it to work out your location when you switch it on.ī) Check if you are using your unit in the best way possible: If the GPS signal is weak or your device is only able to see three satellites or fewer, the location icon is shown in gray, the Driving View is shown in gray, and the unit will be waiting for a valid GPS signal. How to Fix the Problem with Getting GPS Signal on Your Navigation UnitĪ) How long does it take before your unit work out your location?īefore you start driving, your navigation device needs a few moments to connect to the GPS satellites and calculate your location.