Outside Air Temperature Indicator Calibration: Canada

The outside air temperature sensor for the indicator is mounted behind the front bumper. Because of this, the temperature reading can be affected by heat reflection from the road, engine heat, and even exhaust from the surrounding traffic. To prevent bogus readings, the display uses a specific logic as shown.

The outside air is warmer than when the ignition switch was turned OFF (ACC or LOCK) position:

• If the ignition switch was turned OFF for less than 2 hours, the displayed temperature when you turn the ignition switch to ON (II) stays at the ignition switch-off temperature until the vehicle has gone faster than 18 mph (11 km/h) for 30 seconds, then the display immediately updates to the measured outside air temperature.
• If the ignition switch was turned OFF for 2 hours or more, the displayed temperature when you turn the ignition switch to ON (II) rises 1 degree every minute until the outside air temperature is reached.

The outside air is cooler than when the ignition switch was turned OFF (ACC or LOCK) position:

• If the ignition switch was turned OFF for less than 2 hours, the displayed temperature when you turn the ignition switch to ON (II) is the ignition switch-off temperature. The displayed temperature then drops 1 degree every 2 seconds until the reading matches the outside air temperature.
• If the ignition switch was turned OFF for 2 hours or more, the displayed temperature is the measured outside air temperature.