Some automotive devices will record a trip log that keeps track of where you've been. This trip log can be cleared by following the steps outlined when clicking on your device below:
To clear the trip log on a nuvi 30, 40 series, 50, 52, 54 device:
You will need to perform a master reset.
Note: A master reset could erase all waypoints or favorites and will restore your device to the default factory settings. If you would like to back up your favorites to your computer, you can find instructions to do sohere.
Start with the device off and unplugged from power
Touch and hold the lower right corner of the screen with an index finger or the eraser of a pencil
Continue touch and holding the lower right hand corner of the screen then power the device ON
Release the power button when the device powers ON
You will see a new message: "Do you really want to erase all user data?"
Remove your finger from the screen when this message displays
Touch Yes
If text language is not in English, this is the button on the right
The device will now reset. Follow the on-screen prompts and then place your device in an area with a clear view of the sky until it acquires satellites.