How to Start a BYD Car When the Key Fob Battery is Dead?

[StAdalynn]

Shift the gear to N or P position and keep the clutch pedal or brake pedal pressed down. Press the start button once, then place the smart key flat against the start button with the key buttons facing upward toward you. Hold it for 3 seconds before removing the key, then press the start button again to start the car.

[Corey]

I've encountered the situation where a BYD key fob runs out of battery. Don't panic. There's usually a small slot on the back of BYD's smart key - press it to pull out the mechanical key part for unlocking the driver's door. After entering the vehicle, place the drained key near the start button or the induction area under the steering wheel. The system might still detect weak signals, allowing you to start the engine by holding the ignition button. That's how I solved it when driving my Han, successfully starting the engine. Afterwards, promptly replace the CR2032 coin battery - you can open the key casing and swap it yourself. As a preventive measure, check the battery level every six months. The BYD system sometimes displays a low battery warning on the dashboard. It's safer to keep a spare battery in the car. Remember not to park for too long in unfamiliar places to avoid nighttime breakdown hassles. These details come from accumulated experience - dealing with similar issues makes you appreciate how considerate modern automotive technology can be.

[McRichard]

The situation of a BYD key fob running out of battery is quite interesting from a technological perspective. BYD's Keyless system is ingeniously designed—when the key fob battery is depleted, its built-in RFID chip can still function via electromagnetic induction. After using the mechanical key to unlock the door and enter the car, simply place the key fob against a designated induction area (usually marked with a key icon on the center console or around the start button). The system will then search for low-frequency signals to authorize engine ignition, avoiding the hassle of towing traditionally required for such scenarios. For peace of mind, it’s recommended to periodically check the battery voltage with a multimeter or replace the CR2032 battery every 8 months. Additionally, BYD's cloud service app may allow remote engine start if connected, but its reliance on network availability during key fob battery failure depends on specific conditions. A backup plan is to save the 4S store’s contact number in your phone for emergencies. While these smart designs enhance driving convenience, keeping contingency measures in place remains the most reliable approach.

[LaEmily]

Quick steps for a dead BYD key fob battery: Press the clip at the bottom of the key to remove the metal blade, then use it to unlock the driver's door. Once inside, press the entire key against the start button area for several seconds before attempting to start the engine. If unsuccessful, the battery is completely dead - immediately purchase a CR2032 battery from a convenience store for replacement. DIY replacement is simple: Pry open the key casing, replace the old battery ensuring clean contact points. Prevention is key - monitor vehicle warnings or conduct periodic manual tests. If emergency methods fail, don't force it; seek professional mechanic assistance. Memorizing these steps enables swift problem resolution.