Global Positioning System (GPS) Limitations

WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

The GPS cannot detect the vehicle's position during the following instances:

For the first 5 to 10 minutes after reconnecting the battery (This can take as long as 45 minutes).
When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, or large trucks.
When the GPS antenna is blocked by an object placed above it in the vehicle. The GPS antenna requires a clear unobstructed view of the sky.
When there is no satellite signal output (signal output is sometimes stopped for satellite servicing).
When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to, non-OEM in-dash entertainment units (radio, CD players/changers, and Lo Jack), cell phones, and radar detectors placed near navigation system and window tinting above the GPS antenna.

The accuracy of GPS is reduced during these instances:

When only two satellite signals can be received (Three satellite signals are required for accurate positioning).
When the satellite control centers are experiencing problems.
When driving near high tension power lines.