
Here are the solutions for the electronic parking brake system failure of Boyue 1. Refresh the software data of the electronic parking brake control unit. 2. Replace the electronic brake motor. Here is a detailed introduction to the electronic parking brake system failure: 1. It is usually caused by distorted sensor signals or a faulty electronic brake motor. 2. Owners cannot repair it themselves. It is necessary to go to a repair facility with specialized diagnostic equipment to read the fault codes, check the system status, and further determine the cause of the failure. Here is additional information about the electronic parking brake: 1. The electronic parking brake (EPB) refers to the technology that achieves parking braking through electronic control. 2. The electronic handbrake is a technology that achieves parking braking through electronic control. 3. The electronic parking brake system integrates the temporary braking function during driving and the long-term braking function after parking, and achieves parking braking through electronic control.

















Last time I helped my neighbor fix the electronic parking brake issue on his Boyue, I noticed three common mistakes. Many people just frantically press the electronic handbrake button, which overloads the control module. Actually, you should try turning off and restarting the vehicle first. Some owners also overlook the brake pad thickness—excessive wear can trigger the electronic control protection. The most important thing is to check the 15A fuse in the fuse box, located behind the cover under the left side of the steering wheel. If the issue persists after replacing the fuse yourself, it's likely the parking motor is faulty. Replacing this requires removing the rear wheel, so it's best to consult a professional. Also, remember not to engage the electronic handbrake on steep slopes for extended periods, as it can damage the motor.

I've encountered electronic parking brake failures twice in three years of driving my Boyue. The first time was due to rainwater short-circuiting the sensor on a rainy day, and the red warning light on the dashboard really scared me. After turning off the engine and drying the connectors near the wheel hub, it was fine. The second time was more troublesome, as I found out it was caused by trunk leakage corroding the wiring. When troubleshooting, I focused on checking if the brake lights were functioning normally – if they weren't illuminating, it might indicate a master switch issue. Now I always keep an emergency solution handy: remove the rubber cover behind the electronic parking brake button, insert the mechanical key into the emergency slot, and turn it counterclockwise three times to temporarily release the brake. However, after fixing it, you must promptly visit the dealership to reset the system, otherwise the error will recur next time.

Don't force driving with a malfunctioning electronic parking brake. Once when I was driving my Boyue into the mountains, it suddenly reported a fault. I immediately used a makeshift solution: first press the brake pedal hard for three seconds, then hold the handbrake button for ten seconds to force a reset. This can resolve about 80% of occasional faults. If you smell burning from the rear wheels after parking, it's likely the brake pads are stuck, and you'll need to remove the wheel to loosen the caliper. During regular , have the mechanic check the parking control unit connector—the Boyue's plug design isn't very sturdy and can loosen easily. Also, avoid directly spraying the wheel hub sensor with a high-pressure car wash hose, and be careful with aftermarket wiring to avoid interfering with the electronic parking brake system module.

The frequent EPB failures in the Boyue are mostly related to electronic control logic. I've identified three common triggers: unstable voltage causing signal interference, software conflicts after system upgrades, and uneven brake disc wear triggering protection mechanisms. For DIY troubleshooting, you can try disconnecting the negative terminal for five minutes to reset the ECU. Always back up the original system version before upgrading the infotainment system. One detail many overlook: brake fluid with over 3% water content can trigger false alarms and requires immediate replacement. Vehicles with aftermarket touchscreen modifications should particularly check for CAN bus signal interference, as this can cause persistent false trouble codes in the electronic parking brake system.

Last week, I just repaired a Boyue's electronic parking brake malfunction. The 4S shop's standard procedure is to first read the fault codes: codes starting with P may indicate motor issues, while those starting with C are mostly circuit faults. If it's a P3054 code, there's an 80% chance it's a fault with the left rear wheel actuator, and replacing the part after removing the wheel takes about two hours. During inspection, first measure the power supply voltage of the parking control module; if it's below 11 volts, it indicates a circuit anomaly. Many cars experience this issue because aftermarket dashcams draw power from the cigarette lighter, interfering with the system. It's recommended to return to the shop for immediate repair during the warranty period; after the warranty expires, going to a specialized repair shop can save half the cost. Usually, waiting for all self-check lights to go off before shifting gears when starting the vehicle helps prolong the life of the electronic parking brake.


