Can the Electronic Parking Brake Be Used When Brakes Fail?
3 Answers
Brake failure can be assisted by the electronic parking brake. However, due to the design principle of the electronic parking brake, pressing the electronic parking brake switch once for braking will not stop the vehicle. The electronic system will automatically release the parking brake line, preventing braking. In this situation, the correct operation is to continuously hold down the electronic parking brake button without releasing it to provide sustained braking force. During normal parking, the electronic parking brake locks the two rear wheels. If the vehicle is in motion and the electronic parking brake is activated, the system will simultaneously lock all four wheels, accompanied by ABS activation. This means that in the event of unexpected brake failure, unless all four wheels' brake pads, brake discs, master cylinders, and calipers simultaneously malfunction, the electronic parking brake can fully serve as an emergency braking measure.
I've been driving all my life and have experienced the tense moments of brake failure. The electronic parking brake is not a reliable choice in emergencies. It can suddenly lock the rear wheels, causing severe skidding or loss of control, especially at high speeds. Remember, the electronic parking brake was originally designed for parking, not dynamic braking. If you really encounter brake failure, prioritize staying calm, try downshifting to slow down, or find a safe slope to use friction for deceleration. Additionally, regular maintenance of the brake system, checking brake fluid and aging pipelines, can greatly reduce this risk. Don't assume pulling the electronic parking brake will save you—it might make things worse. Getting a professional inspection in time is the best approach.
As a daily commuter, I have to share a personal experience: the electronic parking brake can be used when the brakes fail, but operate it with caution. It may cause the rear wheels to lock up instantly, especially on slippery roads, leading to skidding or even a spin. I almost had an accident that time, and later learned to pull it gently and progressively, not yank it abruptly. It's best to combine it with engine braking, such as downshifting from high gear to low gear for gradual deceleration, while observing the road conditions to find soft obstacles for friction. Don't rely solely on electronic devices; regularly check brake pad wear and electronic system failures. Simple maintenance can prevent problems before they occur. Remember, safety first—don't rush to pull it as a last resort.
