What could cause the parking brakes to fail to hold a vehicle even though the control has been pulled out to apply them?

Pick an answer

1. A mechanical problem, such as worn brake components or a stuck spring, could prevent full application despite the control being set
2. Parking brakes cannot fail once the control is pulled, regardless of how the shoes or springs are adjusted
3. It only happens if the vehicle is on level ground
4. It only happens with automatic transmissions

Correct!

Not quite. The correct answer is highlighted.