2012 Dodge Durango Owner Manual - Page 350

348 UNDERSTANDING YOUR INSTRUMENT PANEL NOTE: A good calibration requires a level surface and an environment free from large metallic objects such as buildings, bridges, underground cables, railroad tracks, etc. Compass Variance Compass Variance is the difference between Magnetic North and Geographic North. To compensate for the differences the variance should be set for the zone where the vehicle is driven, per the zone map. Once properly set, the compass will automatically compensate for the differences, and provide the most accurate compass heading. For the most accurate compass performance, the compass must be set using the following steps. Compass Variance Map 1. Turn the ignition switch ON. NOTE: Keep magnetic materials away from the top of 2. Press the UP or DOWN button until the Setup the instrument panel, such as iPod's, Mobile Phones, (Customer-Programmable Features) menu is reached, Laptops and Radar Detectors. This is where the compass then press the SELECT button. module is located, and it can cause interference with the compass sensor, and it may give false readings.