What to Do When BYD Surui Cannot Detect the Key?
4 Answers
If the BYD Surui cannot detect the key, you can use the mechanical key to open the car door, press the clutch, place the key near the start button, and wait for the button indicator to turn green before starting the vehicle. Common reasons why the BYD Surui cannot detect the key include: 1. Insufficient key battery: For example, the battery in the key has not been replaced for a long time; 2. Key malfunction: The key's control unit is damaged; 3. Signal interference near the parking spot: You can first use the mechanical key to drive the car to another location and try again. If it works, it indicates that the remote key failure is caused by severe signal interference; 4. Vehicle issues: It could be a problem with the fuse box or the vehicle's central control system. The BYD Surui is a compact sedan with body dimensions of 4680mm in length, 1765mm in width, and 1490mm in height.
I recently encountered the issue of undetectable key with my BYD Surui as well, which is really annoying and common. A depleted key battery is the most likely culprit, typically using a CR2032 coin cell that can be bought at any supermarket—try replacing it yourself. Just remember to carefully open the key casing without damaging the circuitry. If the battery replacement doesn’t help, check the key’s position: place it near the steering wheel’s lower area or the door handle’s induction zone, as deep placement in a bag can weaken the signal. For temporary vehicle system glitches, try restarting the car or disconnecting the battery’s negative terminal for a few minutes before reconnecting to reset the anti-theft module. Prevention is key—I recommend replacing the battery every six months and cleaning the key contacts, while avoiding prolonged stays in signal-interference zones. If none of these methods work, promptly contact a 4S店 to inspect the induction module—don’t compromise safe driving, especially on highways where it’s too risky.
As a Hyundai owner, I believe the key issues with the BYD Surui mainly stem from its electronic system. A dead key battery is a common cause - try replacing it with a new one to see if that helps. Damaged internal circuitry or chips in the key could also prevent detection, especially after drops or water exposure. On the vehicle side, check the receiver antenna location (usually under the dashboard) to ensure it's unobstructed; sometimes electromagnetic interference from phones or appliances may be the culprit, so keep keys away from strong signal sources. For software solutions, try pressing the ignition button while braking during startup to force recognition. If unsuccessful, the spare key can serve as an emergency option. Long-term, regular maintenance to check key health is helpful - I make it a habit to test key functions weekly. Avoid storing keys in humid environments to protect electronic components. For unresolved critical issues, always consult professional repair shops to diagnose anti-theft system faults.
I've encountered the issue of BYD Surui key detection failure, which is actually quite simple to handle. First, try replacing the key battery; the CR2032 model can be easily purchased at convenience stores, and you can replace it yourself. Then, place the key close to the area below the steering wheel to avoid signal interference from metal objects. If the car still doesn't start, check if the vehicle's battery has enough charge, as a weak battery can affect the sensing. Restart the car or disconnect the battery cables for a few minutes before reconnecting them. For prevention, regularly clean the key shell to avoid dust accumulation. If several attempts prove ineffective, directly call the manufacturer's service hotline or visit a repair shop to inspect the sensing module, and avoid driving at risk.
