What is the reason why the 2014 Surui cannot detect the key?

[DeElla]

If the Surui car cannot detect the key, there may be the following reasons: The smart key has no power: either due to battery issues or leakage causing premature power depletion. If the smart key is out of power, charge it for a while before trying again. Signal interference: If there is interference, try to find a location where the signal can be received and search for a suitable spot. Transmitter failure: This could be due to the key chip not being read or a malfunction in the transmitter. It is recommended to try a spare key; if the spare key doesn't work, consider getting a replacement key matched. Poor contact in the key battery: You can remove the key shell, rotate the coin battery, or take it out and reinstall it after a while.

[OAmara]

Last time I encountered this issue, I also researched it for a long time. The 2014 BYD Surui not detecting the key could have several possible causes. The most common one is a dead key battery—replacing it solves most cases. Secondly, interference sources around the vehicle, such as nearby parked electric vehicles or mobile phones, can affect the signal. Aging or damage to the key's internal chip may also cause detection failure; if the vehicle's main control module malfunctions, signal reception will fail. It's best to first try moving to a different location, away from interference, and use the physical key to open the door and start the car as an emergency measure. Don’t rush to the repair shop—check the relevant fuses in the fuse box yourself to see if they’re intact; sometimes a blown fuse just needs replacement. Regularly checking the key’s condition can prevent many troubles.

[BeauFitz]

My Surui is the 2014 model, and I've encountered key issues several times. Usually, the reason is straightforward: the simplest is a depleted key battery, which costs just 20 yuan to replace. But that time, even after replacing the battery, it still didn't work. It turned out to be a problem with the sensor module, and the mechanic said it might be due to internal corrosion. I recommend trying the spare key; if the spare doesn't work either, it indicates an issue with the vehicle's system, such as a fault in the main control unit. In daily driving, avoid placing the key near water bottles, as damp environments can easily cause short circuits. It's best to record the frequency and timing of the issues to help quickly pinpoint the problem during repairs.

[Nguyen]

For the 14-speed Ruixin key malfunction, common causes include battery failure, signal interference, or receiver damage. The battery issue is the primary checkpoint; interference sources such as high-voltage lines or parking lot shielding layers should be avoided. Software bugs in the vehicle system are also common, and a power cycle may resolve them—try disconnecting the battery negative terminal for a few minutes and then reconnecting. If DIY efforts fail, it's more reliable to visit a professional shop to scan OBD diagnostic codes.