What is the reason why the BYD S6 frequently fails to detect the key?
2 Answers
BYD S6 frequently fails to detect the key: One or both pins of the power distribution box may have desoldered, requiring the hood to be opened, the power distribution box to be disassembled, and the two pins on the power distribution board to be resoldered. The one-key start intelligent system functions include: automatic unlocking, automatic locking, automatic window closing, automatic anti-theft, one-key start, one-key shutdown, automatic locking before driving, automatic unlocking when parking and shutting off the engine, and also a trunk opening function. The BYD S6 is BYD's first SUV, positioned as a mid-to-high-end independent SUV, available with 1.5T, 2.0L, and 2.4L engine displacements, divided into four models: manual luxury, manual premium, automatic premium, and automatic deluxe.
As a long-time owner of the BYD S6, I often encounter this issue, mainly due to a depleted key fob battery or signal interference. My car has failed to detect the key several times for various reasons: when the key's battery is low, the proximity sensor becomes less responsive—replacing it with a new battery usually solves the problem. Sometimes, placing a phone or other electronic device nearby can cause signal interference, leading to system confusion, so moving them away might help. The vehicle's receiving antenna could also malfunction, such as being damaged by moisture, affecting signal reception. I recommend first checking the key fob battery yourself—the BYD key uses a CR2032 battery, which is widely available and easy to replace, saving both time and money. If the issue persists, the car's keyless entry system module might be faulty, requiring a visit to the 4S dealership for specialized diagnostics or an ECU software refresh. In short, don’t delay if this happens frequently, as it could affect startup safety—address it promptly to avoid bigger hassles.
