Good morning Otis. My name is*****'m sorry that you're having this problem. I will do my best to help.
This could be the result of a navigational setting on the device. A simple adjustment may resolve the issue.
If the device's route preference or calculation mode is set to Shorter Distance, this may cause the device to guide you off of a highway in order to navigate a more direct route. Setting the route preference to Faster Time may also make a difference in how the device calculates a route. Another setting that can be adjusted on the device is the avoidances. If highways or motorways are checked, then the device will avoid them when calculating a route. Your device may also factor in traffic conditions and road construction.
To check your device's navigation settings:
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For your convenience I have posted a link to the online user manual for your device in the hopes that it will be helpful to you.
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