Honda Odyssey Owners Manual: Compass

When you turn the ignition switch to ON , the compass self-calibrates, and the compass display appears.

Compass calibration can be affected under the following conditions:
• Driving near power lines or stations
• Crossing a bridge
• Passing a large vehicle, or driving near a large object that can cause a magnetic disturbance
• When accessories such as antennas and roof racks are mounted by magnets