Does the Buick Regal Electronic Parking Brake Have an Auto-Release Function?

[DelElena]

The Buick Regal electronic parking brake has an auto-release function. Most vehicles equipped with electronic parking brakes will automatically engage the parking brake when the vehicle is parked, the engine is turned off, and the seatbelt is unfastened. When getting back into the vehicle, fastening the seatbelt, and closing the door, the parking brake will automatically disengage upon pressing the accelerator. Principle of the Parking Brake: The professional term for the parking brake is auxiliary brake. Unlike the main braking system, it uses a steel cable connected to the rear brake shoes to apply braking force to the vehicle. Prolonged use of the parking brake can cause the steel cable to undergo plastic deformation. Since this deformation is irreversible, long-term use will reduce its effectiveness and increase the parking brake's travel distance. Supporting Components: The parking brake system also includes a return spring. When the parking brake is engaged, the spring is stretched; when the parking brake is released, the spring returns to its original length. With prolonged use, the spring may also experience corresponding deformation.

[HeidiDella]

I've been driving a Regal for several years, and every time I start by shifting to D gear and lightly pressing the accelerator, the electronic parking brake automatically releases, which is very convenient. This feature is most noticeable during hill starts, eliminating the need to fumble for buttons. However, there are situations where it won't release automatically, such as when the seatbelt isn't fastened or the door isn't properly closed, as the system detects safety hazards. Additionally, during cold starts, if the battery voltage is low, the automatic release might be delayed, so it's recommended to warm up the car before starting in winter. Overall, this feature is quite reliable, and unless there's a fault code warning, manual operation is generally unnecessary.

[DelLyla]

As an experienced driver who frequently drives different cars, the Regal's electronic parking brake does indeed feature an automatic release function. It will automatically disengage as long as several conditions are met: starting the engine while pressing the brake pedal, fastening the seatbelt, shifting to D gear, and then pressing the accelerator. I rely on it most during frequent stop-and-go situations in city rush hours, as it frees up my right hand. However, be cautious on steep slopes or muddy roads, as wheel slippage may cause the automatic release to be less responsive—in such cases, manually pressing the button is more reliable. For prolonged parking, it's advisable to engage the parking brake to protect the motor.

[NaomiDella]

After studying the Regal's manual, its electronic parking brake is designed intelligently. Once the engine is started, simply shift into gear and press the accelerator, and the brake calipers will automatically release. This feature is almost standard on new Regal models, but pre-2015 older versions might be exceptions. In real-world use, it's most convenient at traffic lights—step on the gas and go as soon as the light turns green. However, automatic release will fail if there's abnormal tire pressure or an ABS alert. It's recommended that owners regularly inspect the braking system, especially checking for aging sensor wiring.