What are the reasons why BYD's keyless start cannot detect the key?
2 Answers
Frequently placing the car key near electronic devices such as mobile phones, computers, or televisions can cause interference with the low-intensity radio waves in the key. Additionally, strong radio waves from nearby sources like TV towers, airports, or power plants can also lead to the failure of the one-button start function. Below are some solutions for when the key cannot be detected: 1. Dead key battery: If the one-button start fails to detect the key, the first thing to check is whether the car key has enough battery power. Try replacing the key's battery and then attempt the one-button start again to see if it returns to normal. If the issue persists, it might be due to poor battery contact, in which case the car key may need to be repaired. 2. Spare key: You can also try using the car's spare key to determine if the first key is faulty and causing the issue. If the spare key works, it indicates that the first key is defective. If the spare key also fails to work, further analysis based on other scenarios will be necessary.
I've been driving BYD for over a decade and have encountered several keyless start failures. The most common issue is a dead key fob battery - these small batteries typically last one to two years, and insufficient power will definitely prevent the car from detecting it. Another possibility is strong nearby interference, like the anti-theft access systems in mall underground parking lots, or having your phone placed too close which can also disrupt the signal. My suggestion is to first replace the key fob battery with a new one. If that doesn't work, try changing locations - for example, place it in the dedicated induction area in the center console cup holder. Additionally, physical damage like dropping the key or moisture exposure could cause issues, so check the casing for cracks. I keep a mechanical key as backup for emergencies, but for actual repairs you'll need to visit the 4S店 to reprogram the system.
