How to Solve BYD ESP System Malfunction?
4 Answers
BYD ESP system malfunction is caused by throttle failure. It is recommended to check whether there are foreign objects in the throttle, whether the plug is normal, and use a computer to read whether the throttle opening is normal. If the cause cannot be found, it is recommended to go to a 4S store for solution. The following is an introduction to ESP: 1. Meaning: ESP is an electronic stability program, which integrates three systems: ABS (anti-lock braking system), BAS (brake assist system) and ASR (acceleration slip regulation system). Therefore, a diagnostic instrument should be used to read the fault code and then deal with it specifically according to the fault code. 2. Function: ESP is mainly used to deal with the risk of tail flicking and loss of control caused by continuous steering when avoiding obstacles in an emergency. When avoiding in an emergency, ESP intervenes to increase the driving force of the driving wheel; when there is a tendency of tail flicking, ESP will brake the other side wheel to weaken the rotation, so as to help the vehicle follow the driver's steering intention. 3. Treatment method: If the ESP fault indicator light on the instrument panel of the vehicle is always on after the vehicle is started, it may be that the ESP of the vehicle is faulty. When the ESP light is found to be on during driving, it is necessary to slow down the driving speed, avoid excessive steering and turning, and find a nearby 4S store to check the cause as soon as possible.
Last time I dealt with a BYD ESP malfunction, I found the causes were mostly due to dirty sensors or blown fuses, so I started with simple troubleshooting. Open the hood to check the status of the ESP fuse in the main fuse box; if it's blown, replacing it with a spare one costs just a few bucks. If that doesn't work, clean the sensor area near the wheels—dirt can interfere with the signal and cause false alarms. Use a soft cloth to wipe it clean and restart the vehicle. If the light remains on, it's best to use a diagnostic tool to read the fault code and determine the specific issue, which could be a loose wiring harness or a malfunctioning module requiring professional repair. Safe driving is crucial—slow down and pull over if a malfunction occurs. Regularly avoid muddy roads to prevent blockages. Spending a little time on these steps can often resolve the issue yourself without the need for immediate professional service.
I also experienced the ESP warning light coming on while driving my BYD. It happened on a rainy day when the wheel sensors got covered in mud, causing the system to malfunction. After safely pulling over, I checked the corresponding fuse in the fuse box and confirmed it wasn't blown. Then I cleaned the sensor channels inside the wheel hubs - sure enough, they were clogged with dirt. After wiping them clean and restarting the car, everything returned to normal. For minor issues like this, don't rush to spend big money on repairs. Trying some basic maintenance yourself can save both money and hassle. Additionally, if the problem persists, it might be a software bug or aging wiring. I recommend using a standard OBD tool to scan for trouble codes first. Only if that doesn't work should you consider going to the 4S store for calibration. Remember, when encountering this situation while driving, slow down and don't push your luck.
ESP malfunctions are often caused by wheel speed sensor signal errors or system self-check anomalies. Parking, turning off the engine, and waiting a few minutes for the electronic module to reset may resolve the issue. Check if the wiring and connectors are secure; simply tightening loose connections can help. Clean the wheel area to prevent contamination interference, as this low-cost maintenance is effective. If the warning light remains on, inspect the condition of specific components, such as sensor voltage or whether the controller function has degraded.
