Why can't the BYD one-button start ignite the engine?
3 Answers
The reasons why the BYD one-button start cannot ignite the engine may include the following: 1. Key demagnetization: Frequently placing the car key near electronic devices such as mobile phones, computers, or TVs can interfere with the low-intensity radio waves in the key. Alternatively, if there are strong radio waves nearby, such as from TV towers, airports, or power plants, the one-button start may "fail." 2. Car key battery depletion: If the key shows signs like reduced remote control distance or decreased sensitivity, it is a warning that the key battery is running low. In a state of battery depletion, the one-button start function cannot operate properly, and the battery should be replaced as soon as possible. 3. Vehicle malfunction: In extreme cases such as fuel system issues, dead battery, or electronic component short circuits, it is advisable to directly call the 4S store staff for assistance.
I've been driving a BYD for several years, and the one-touch start sometimes fails to ignite, which is quite annoying. The most common issue is the car key battery running out of power. The one-touch start relies on the key's signal, and if the battery is old and depleted, the car won't receive the command and naturally won't start. Another issue is an aging car battery. The one-touch start system requires sufficient power, and if the battery hasn't been replaced in three or four years, low voltage can prevent startup, requiring a jump-start or a new battery. There are also system faults, such as dirty or obstructed sensors, or software bugs that need updating. Don’t forget basic operations like not pressing the brake pedal fully or not having the gear in P mode, which new drivers often overlook. I recommend carrying spare key batteries, regularly checking the battery health, and visiting a 4S store for a check-up if unsure.
As a new driver who just bought a BYD, I panicked when the one-touch start failed. One winter morning, I was in a hurry to leave but got no response after pressing the button—I thought the car was broken or had a system malfunction. Later, a friend reminded me that I might not have pressed the brake firmly enough. After stepping on it harder, it started successfully. Another time, the gear wasn’t in P but automatically stopped in D, which I didn’t notice, causing the one-touch start to fail. Another possible reason is a weak key signal—being too far away or interference from metal objects—so moving closer fixed it. The lesson I learned is not to panic: first, ensure the basics are done right—press the brake until you hear a click, and return the gear to P. Keep an emergency power source in the car to temporarily save the day if the battery dies. If all else fails, call the 4S store for help—don’t tamper with the circuits.
