2011 Ford Explorer Owner Guide 4th Printing - Page 298

Driving WARNING: The collision warning system's brake support can only help reduce the speed at which a collision occurs if the driver applies the vehicle's brakes. The brake pedal must be pressed just like for any typical braking situation. Blocked sensor If a message regarding a blocked sensor is displayed, the radar signals from the sensor, located behind a fascia cover near the driver side of the lower grille, have been obstructed. When the radar signals are obstructed, a vehicle ahead cannot be detected and the collision warning system will not function. The following table lists possible causes and actions for this message being displayed. Cause The surface of the radar in the grille is dirty or obstructed in some way The surface of the radar in the grille is clean but the message remains in the display Heavy rain, spray, snow, or fog is interfering with the radar signals Action Clean the grille surface in front of the radar or remove the object causing the obstruction Wait a short time. It may take several minutes for the radar to detect that it is no longer obstructed The collision warning system is temporarily disabled. Collision warning should automatically reactivate a short time after the weather conditions improve. The collision warning system is temporarily disabled. Collision warning should automatically reactivate a short time after the weather conditions improve. Swirling water, or snow or ice on the surface of the road may interfere with the radar signals 298 2011 Explorer (exp) Owners Guide, 4th Printing USA (fus)