What are the causes of EPB electronic parking brake system failure?
2 Answers
EPB electronic parking brake system failure requires inspection of the vehicle wiring, parking motor, and rear brake pads. The electronic parking brake system (EPB: Electrical-Park-Brake), commonly referred to as the electronic handbrake, integrates the temporary braking function during driving with the long-term parking braking function, and achieves parking braking through electronic control technology. More information about the electronic parking brake system is as follows: 1. Introduction: The electronic handbrake, also known as the electronic parking brake system (Electrical-Park-Brake, EPB), refers to the technology that combines the temporary braking function during driving with the long-term parking braking function and realizes parking braking through electronic control. 2. Function: The electronic handbrake extends from the basic parking function to the automatic parking function (AUTOHOLD). The application of AUTOHOLD automatic parking technology allows drivers to avoid prolonged braking when the vehicle is stopped. With the automatic electronic parking brake activated, unnecessary vehicle sliding can be prevented. Currently, there are generally two types of electronic parking brake technologies applied in vehicles: one is the cable-type electronic parking brake system, and the other is the caliper-integrated electronic parking brake system.
I just encountered this EPB (Electronic Parking Brake) malfunction, and the warning light came on, which really startled me. Common causes include battery issues such as low voltage or loose connections, which affect the system's power supply; faulty sensors, like dirt or incorrect positioning, leading to false alarms; and actuator motor jamming, possibly due to dust accumulation or aging; software bugs, such as system code errors requiring an update. If the warning light comes on, the first thing to do is to stop and check—never continue driving, as the vehicle could roll on a slope and cause an accident. As a temporary measure, you can shift to P (Park) and use the handbrake, but don’t rely on this—head to a professional repair shop as soon as possible to scan for fault codes with a diagnostic tool. Safe driving is the top priority—don’t delay repairs to save money.
