TomTom makes several models of vehicle-mounted personal GPS devices. Like many small computer systems, these GPS devices use flash memory similar to that found in a USB thumb drive in order to operate. When a user saves a large amount of data on the GPS device or uses the device heavily, the memory may become full or corrupted. An unfortunate side effect of this is maps that fail to load when the unit is powered up. But there are steps you can take to clear the memory and restore the maps. Writer Bio
