Your magellan needs to be reset. Turn the unit on. Hold it with the screen facing you. Underneath the screen on the lower left is a reset hole with a button in it. Get a paper clip or the sharp point of a pencil. Push into the reset hole. The screen will go black and then will restart. This sholud solve your problem.
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Your magellan needs to be reset. Turn the unit on. Hold it with the screen facing you. Underneath the screen on the lower left is a reset hole with a button in it. Get a paper clip or the sharp point of a pencil. Push into the reset hole. The screen will go black and then will restart. This sholud solve your problem.
It could be the default settings when it goes to the night mode.