Can I park with the handbrake if the brake fails?

There are two kinds of parking brake systems in cars, one is traditional mechanical and the other is electronic. For these two hand brakes, the treatment methods of brake failure are also different.

First of all, talk about the manipulator brake. The mechanical hand brake uses the parking brake handle to pull a brake cable (steel wire rope), and the cable drives the push rod in the brake to push the brake shoe and the brake drum to press and lock tightly, resulting in braking effect. Note that this handbrake can only brake the rear wheel, but not the whole car. If you only use the manipulator to brake, you must be careful not to pull the brake handle to the top at once, but hold down the release button of the handle with your hand, slowly pull it up, then put it down, and then pull it up and put it down repeatedly until the speed slows down. If you pull the brake to the top at once, the rear wheel of the car will suddenly lock up and the car will flick its tail. This situation is extremely difficult to save, and cars are prone to rollover, which is very dangerous. There is also the sudden death of the hand brake, and the huge braking force will react on the brake cable, which may break it and the hand brake will completely lose its function.

Let's talk about the electronic handbrake. Electronic handbrake has a very important function, that is, dynamic emergency braking function. If extreme conditions occur during driving, such as sudden brake failure of the car or the driver can't control the brakes (the brake pedal is stuck and the driver falls asleep). ), just press and hold the switch of the electronic handbrake (be sure to press and hold it, not just release it once) to brake. Note: at this time, the braking of the vehicle is not mechanical parking braking, but hydraulic braking of the whole vehicle. At high speed, emergency braking means that all four wheels are hydraulically braked by the ESP control unit with a force slightly less than the full braking force. When the vehicle is close to a stationary state (the vehicle speed is lower than 7km/h), the electronic handbrake can be directly used to slow down or park. In this process, the control unit will automatically switch the braking mode according to the different vehicle speeds, and people only need to press and hold the electronic handbrake button. This function is still valid even if the vehicle is turned off unexpectedly (the circuit is still connected). I hope it helps you.