What does the EVP display indicate when the Baojun e100 has a brake failure?
4 Answers
Baojun e100 brake failure displaying EVP is due to a damaged brake booster pump. Below is the relevant introduction of the Baojun e100: 1. Appearance: The front face of the Baojun E100 features a perforated grille with smooth lines. The A-pillars are blackened, combined with a two-tone body design, creating a visual effect of a floating roof. 2. Interior: The interior of the Baojun E100 adopts an encircling design, with multi-directional adjustable seats. The multifunctional steering wheel and LCD combination instrument panel can achieve most functions. Additionally, the Baojun E100 has a 190L capacity trunk and up to ten storage spaces inside the car. 3. Configuration: The Baojun E100 comes standard with lens headlights, front fog lights, LED turn signals, a multifunctional steering wheel, a 7-inch instrument panel, one-touch window lowering, rear parking sensors, 2 USB ports, onboard 4G Wi-Fi, onboard Bluetooth, App car connectivity, and four-wheel disc brakes. The Zhi Xiang version adds features such as electric adjustment for the exterior rearview mirrors, keyless entry/one-touch start, electronic parking brake, four-way seat adjustment, vehicle stability system, front passenger ISOFIX interface, and 5 USB ports.
Don't panic when encountering a Baojun E100 brake failure with the EVP light on—it's a warning about the electronic vacuum pump issue. Unlike fuel-powered vehicles, our electric cars rely entirely on this electric vacuum pump for brake assistance. I've previously serviced several similar cases in the workshop and found three common possibilities: first, the vacuum pump itself is faulty, with a seized or burnt motor; second, there's air leakage in the vacuum tube, especially at the connecting rubber tubes that may have aged and cracked; third, it could be a sensor false alarm or wiring short circuit. Another easily overlooked point: unstable voltage from the small battery can also trigger false alarms. It's recommended to pull over immediately and check, trying to restart the vehicle to see if the light disappears. If the fault light remains on, never force the car to drive—the brake assistance will weaken, and even steering will become difficult.
I've encountered EVP faults twice in the five years of driving my electric vehicle. The first time was after I changed the brake pads myself when the warning light came on, and it turned out I had loosened the vacuum pump wiring while unplugging connectors. The second occurrence happened on the highway when the light suddenly illuminated, and the brake pedal felt unusually stiff - replacing the vacuum pump finally solved the issue. This problem is quite common; at least three members in my car enthusiast group have experienced it. Beyond hardware failures, checking the fuse is crucial - located in the engine compartment fuse box labeled EVP, use tweezers to pull it out and inspect if the metal filament is broken. There's also a practical trick: turn on the headlights and press the brake to listen for the pump's humming sound - if it's silent, there's an 80% chance the pump has stopped working.
The illuminated EVP warning light on the Baojun E100 usually indicates a vacuum pump system issue. This component is crucial for the electric braking system - failure will cause the pedal to become stiff. Common causes include: burned-out vacuum pump motor, vacuum line leaks (pay special attention to connections), or control module failure. From personal experience, excessive brake pad wear can also trigger false alerts. Troubleshooting steps: first scan OBD codes to identify the problem; then measure vacuum pressure (normal range should be -0.6 to -0.8 bar); simultaneously check relays and fuse sockets. If the code shows insufficient pressure, replacement of the entire pump assembly may be required.
