Originally Posted by
Tourist in MSN
GPS units often are poor in accuracy for the first 10 to 20 minutes after not being used for a while, the GPS has to load updated info from the satellites on their orbits. .
They Garmin CS person said the same thing. In the off season a person should once every 3-4 weeks take the unit and go for a drive with it. Just to make sure its all good...keep the files fresh or something. Long periods of not using the GPS like over winter can cause issues sometimes he said. Lesson learned for me I guess.