The Hidden Life-Saving Function of Your Car's Electronic Parking Brake

The electronic parking brake (EPB), a small switch marked 'P' found in most new cars, has become a standard feature, replacing the classic handbrake lever. While drivers use it daily, many are unaware of its capabilities beyond securing a vehicle on a parking spot.

Volkswagen's instructional videos highlight that the EPB's sophisticated technology can be crucial in critical moments, potentially saving lives. If the primary hydraulic braking system fails, pulling and holding the EPB switch during driving activates strong, controlled braking on the rear wheels, enabling a safe stop. This function extends far beyond the common perception of the handbrake as merely a parking mechanism.

The EPB also provides several convenience features. It includes an auto-release function that disengages the brake once the driver closes the door, selects a drive gear, and presses the accelerator, preventing the risk of driving with the brake engaged. For hill starts, especially when towing a trailer, the system can hold the vehicle until sufficient engine power is applied, releasing only when the driver lets go of the switch.

Safety is further enhanced by a mechanism that automatically engages the brake if the driver's door is opened at speeds below three kilometers per hour. According to data, 92 percent of new cars sold in 2024 were equipped with this system. While EPBs offer space-saving and integration benefits with driver-assist systems like 'auto-hold,' repairs can be more complex and costly than traditional brakes. Additionally, a dead battery can prevent the brake from being released, though such failures are rare.

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Naime, ako glavni hidraulički sustav kočenja zakaže, povlačenjem i držanjem EPB prekidača tijekom vožnje aktivira se snažno i kontrolirano kočenje na stražnjim kotačima, što omogućuje sigurno zaustavljanje vozila.