What Causes the Jerky Braking Feeling in BYD Han?
4 Answers
Here is the analysis of the reasons for the jerky braking feeling in BYD Han: 1. Low-speed jerkiness: Issues with the transmission gear programming, internal dirt and impurities in the transmission preventing effective adjustment, and poor transmission cooling, which affects oil pressure and causes jerking. 2. Upshift jerkiness: The transmission's response speed is not fast enough, and the upshift speed cannot keep up with the throttle input. 3. Downshift jerkiness: Due to the intervention of the energy recovery system, when the driver releases the throttle pedal or presses the brake pedal, it affects the engine speed, causing a mismatch between the engine speed and the clutch speed, resulting in a jerky feeling.
I've also experienced brake judder when driving my BYD Han. It's mainly caused by uneven or rusty brake discs, especially after rain or prolonged parking, when small rust spots form on the disc surface, resulting in noticeable vibration when braking. Uneven wear of brake pads, with one side higher than the other, can also lead to unstable friction. Sometimes, early ABS intervention can cause this too—it prevents wheel lock-up, but if the sensors are dirty or there are wiring issues, the judder becomes more pronounced. Additionally, air bubbles in the brake fluid that haven't been fully bled can affect hydraulic pressure transmission, or the regenerative braking system may not regulate energy recovery smoothly. I recommend checking the condition of the discs and pads first. If the issue persists, visit a 4S shop for inspection—don't delay, as it could compromise safety.
I've dealt with quite a few braking issues on the BYD Han. The jerking sensation is commonly caused by warped brake rotors – after prolonged high-intensity braking, the disc surface tends to warp, causing wobbling with each brake application. Mismatched brake pad materials could also be the culprit; if aftermarket pads with excessive hardness were installed on a new car, poor adhesion may occur. Sometimes the ABS module is at fault – faulty sensor signals or control unit software bugs can cause the braking to pulse intermittently. Loose suspension components can indirectly affect braking, and unbalanced tires may also cause vibration during braking. Driving habits matter – avoid sudden stops and hard braking. During regular maintenance, always check pad thickness and fluid levels. For electric vehicles, pay special attention to regenerative braking integration; poor coordination between regenerative and mechanical braking causes jerking. Have a professional mechanic scan the system with diagnostic equipment immediately.
Experiencing brake jerking in a BYD Han is often due to disc issues, where wear or rust causes unstable friction. ABS activation is also common, especially on slippery roads. Improper regenerative braking calibration can exacerbate the jerking sensation. It's recommended to inspect and replace discs, and bleed brake fluid to remove air bubbles. Practicing gradual braking and anticipation can help minimize the issue in daily driving.
