Excessive **heating in the braking circuit** can be caused by the **prolonged friction of the brake pads against the drums**. When the brake pedal is pressed, the pads or shoes rub against other elements of the wheels to stop the vehicle. This friction generates heat, and if maintained for a long time, it can cause an increase in temperature in the brakes.

It is important **not to use the brake excessively** because this can lead to overheating, which in turn reduces braking efficiency. In situations where the brakes become very hot, it is recommended to release the brake pedal to allow them to cool down. Additionally, when descending long and steep slopes, it is advisable not to accelerate and to downshift so that the engine helps to brake, thus avoiding excessive use of the brakes.