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Is the Electronic Parking Brake Automatic?

2 Answers

DelMary

08/29/25 4:30am

Electronic parking brakes are not automatic. Extended knowledge: 1. Working principle of cable-type electronic parking brake: When the driver presses and holds the electronic parking brake switch, the emergency braking function is activated. When the service brake is functioning normally, the ESP system (Electronic Stability Program) controls the service brake to apply braking force to all four wheels. If the service brake fails, the electronic parking brake control unit evaluates signals from the four wheel speed sensors to brake the rear wheels and prevent them from locking; in this case, the request to illuminate the brake lights is sent by the electronic parking brake control unit. 2. Working principle of caliper-type electronic parking brake: When the driver pulls the electronic parking brake button to engage the parking brake, the control module motor on the rear brake calipers starts rotating, applying braking force to the brake disc; at the same time, the traditional hydraulic brake also engages, making the braking response more agile. When the vehicle is parked, the driver can automatically release the parking brake by pressing the accelerator pedal or applying the brake (reaching a braking force of 10bar).

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May

09/11/25 2:20am

The electronic parking brake indeed has certain automatic functions in most modern vehicles. Speaking from my personal driving experience, when I first got my license and drove a friend's new car, I noticed that the parking brake would engage automatically after stopping and turning off the engine, without me needing to press any button. Then, when I restarted the car, fastened the seatbelt, and stepped on the accelerator, it would release automatically. This design prevents the awkward situation of forgetting to engage the parking brake, especially when parking on slopes, making it safer. However, it's not entirely automatic—during normal driving, I still need to press the electronic button to control it, unlike a fully automatic system that requires no intervention at all. The advantage is that it simplifies operation and keeps the interior space cleaner. It's worth noting that different car models may vary; for example, some entry-level cars still require manual operation. It's best to check the vehicle's manual to confirm the specific setup method to avoid misinterpreting it as a malfunction.

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