Foot brake Depressing the brake pedal can reduce the vehicle speed or stop the vehicle. If the foot brake is used for a long period of time on a long downhill road, the fade or vapor lock phenomenon may occur due to the overheating of the brake system, reducing the braking performance and causing an accident. Do not only apply the foot brake on long downhills, but also use regenerative braking (increase regenerative braking with paddle shift lever). Caution y y Reduce the speed properly using the engine brake on a slippery road such as an icy road or a snowy road. What is the fade phenomenon? The fade phenomenon is the reduction of braking force due to a decrease in the friction force caused by a temperature increase in the friction surface of a brake when the brake is applied excessively on a long downhill road. What is the vapor lock phenomenon? The vapor lock phenomenon is the condition that when the brake is applied excessively on a downhill road, bubbles form in the brake fluid in the wheel cylinder or brake pipe of the hydraulic brake so that proper hydraulic pressure cannot be transferred, causing the brake system not to operate properly even if the pedal is depressed. Warning Checking for foreign materials on the pedal operation area 4 y y Before driving the vehicle, clean up the area where the brake pedal or the accelerator pedal is operated. If an empty can or an article is present below the pedal, it may obstruct the pedal operation, causing an accident. Be sure to check before driving the vehicle. Starting and driving 4-115
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