What typically causes the low air pressure warning buzzer or light to activate during normal operation, if the system has no leaks?

Pick an answer

1. It activates whenever the parking brake is released
2. It is designed to activate briefly every time the brake pedal is pressed, though that is not correct
3. It should not normally activate during driving if the compressor and system are functioning properly
4. It activates automatically every hour regardless of pressure

Correct!

Not quite. The correct answer is highlighted.