How can you determine if the parking brake is functioning correctly?

To determine if the parking brake is functioning correctly, one of the primary tests is to see if the vehicle remains stationary when parked on a slope. This means that when the parking brake is engaged, it should be able to hold the weight of the vehicle against the force of gravity, preventing it from rolling. If the vehicle stays in place and does not move, it indicates that the parking brake is effectively securing the vehicle.

In contrast, if the vehicle rolls when parked on a slope, it signifies that the parking brake is not effectively engaging or holding the vehicle in place, which suggests a malfunction. A loose parking brake lever may also indicate that the brake is not properly engaged, but it does not conclusively tell you whether the brake itself is functional or not. Additionally, the brake light not illuminating might signify a separate issue, but it does not directly test the effectiveness of the parking brake's hold when stationary. Therefore, observing that the vehicle remains stationary on an incline is the clearest and most effective way to assess the functionality of the parking brake.