Vehicle Positioning
At times, the position of the vehicle on the map may be
inaccurate due to one or more of the following reasons:
• The road system has changed.
• The vehicle is traveling on slippery road surfaces
such as sand, gravel, and/or snow.
• The vehicle is being driven on winding roads.
• The vehicle is being driven on a long straight road.
• The vehicle is approaching a tall building or a
large vehicle.
• The surface streets run parallel to a freeway.
• The vehicle has just been transferred by a vehicle
carrier or a ferry.
• The current position calibration is set incorrectly.
• The vehicle is being driven at high speeds.
• The vehicle is repeating a change of direction by
going forward and backward, or turning on a turn
table in a parking lot.
• The vehicle is entering and/or exiting a parking lot
or garage with a roof.
• The vehicle has a roof carrier, ski, or bike rack
installed on it.
• The vehicle has tire chains on it.
• The tires have been replaced.
• The tire pressure is incorrect.
• The tires are worn.
• The battery is disconnected.
• The vehicle is driven in heavy traffic where driving
is at low speeds and the vehicle is stopped and
started repeatedly.
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