2012 Ford Explorer Owner Guide 2nd Printing - Page 296

Driving Operation The radar sensor detects vehicles ahead that are moving in the same direction as your vehicle. If the radar detects that your vehicle is rapidly closing in on another vehicle, a red warning light will illuminate and an audible warning chime will sound. After that, if the risk of collision further increases after the warning light, the brake support prepares the brake system for rapid braking. This may be apparent to the driver. However, the system will not automatically activate the brakes. The vehicle will not stop unless the driver presses the brake pedal. If the brake pedal is pressed then braking is implemented with full brake function, even if the force on the brake pedal is light. The collision warning system is active at speeds above approximately 5 mph (8 km/h). Collision warning system limitations Due to the nature of radar technology, there may be certain instances where vehicles will not provide a collision warning. These include: • Stationary or slow moving vehicles below 6 mph (10 km/h). • Pedestrians or objects in the roadway. • Oncoming vehicles in the same lane. • Severe weather conditions (see also blocked sensor section). • Debris build-up on the grille near the headlamps (see block sensor section). • Small distance to vehicle ahead. • Steering wheel and pedal movements are large (very active driving style). • High interior temperatures, which may deactivate the illumination or the warning lamps until the interior temperature reduces (audible warning will alert the driver). In addition, sun load and sunglasses may reduce the visibility of the warning lamps. Therefore, it is recommended to keep the audible warning on. 296 2012 Explorer (exp) Owners Guide, 2nd Printing USA (fus)