What are the functions of the 4 buttons on a BYD car key?

[MacRebecca]

The 4 buttons on a BYD car key are the unlock button, lock button, trunk switch, and car finder button. Their descriptions and functions are as follows: Unlock button: The button marked with an unlock symbol on the key, used to unlock the vehicle's doors and windows, and deactivate the anti-theft function. Lock button: The button marked with a lock symbol on the key, used to lock the vehicle's doors and windows, and activate the anti-theft function. Trunk switch: The button marked with a trunk opening symbol on the key, used to unlock the trunk. Car finder button: The button marked with a horn symbol on the key, used to remotely wake up the vehicle and make a sound, helping the owner locate the car. The latest BYD model has a body length of 4650mm, width of 1860mm, height of 1700mm, and a wheelbase of 2712mm. In terms of power, it is equipped with a BYD476ZQD transverse turbocharged engine. Paired with this engine is a 7-speed wet dual-clutch transmission (DCT), delivering a maximum horsepower of 185Ps and a maximum power of 136kW.

[SanCourtney]

I've been driving the BYD Han for 5 years and have memorized all the key functions. The leftmost button is the unlock key - a single press opens all doors. Right next to it is the lock button that automatically secures the vehicle when pressed after turning off the engine. The bottom right button controls the trunk - short press to unlock then long press for 2 seconds to lift the trunk lid, preventing accidental operation. The most distinctive circular button is the remote start - press and hold for 3 seconds in winter to pre-start the engine, or activate air conditioning in summer. The key back even has a hidden key ring that releases a mechanical emergency key - such thoughtful detailing! These well-designed functions make driving effortless, especially the remote start which is literally life-saving in Northeast China's sub-zero winter temperatures.

[VanNathan]

When I first got my BYD Dolphin, I couldn't tell the key buttons apart, but now I've got them down pat: press the outward-facing arrow icon to unlock all doors, and the lock icon automatically folds the mirrors when pressed; the trunk button requires a firm long press until you hear a sound; the coolest feature is the remote start—just hold it down to fire up the engine. Tried pre-cooling with AC yesterday, and it worked like a charm. Found out the key can still sense and lock/unlock from inside my pocket—no panic if I forget my phone. New owners should definitely skim the manual—it's packed with handy hidden features.

[PresleyFitz]

As a mom who frequently uses the BYD key fob for school runs, I find its features incredibly convenient. The lock button automatically rolls up the windows to prevent rain from getting in. Unlocking only turns on the interior lights without starting the engine, which is very safe. Pressing the trunk button for two seconds opens it separately without unlocking the whole car—super handy. The remote start function ensures the car is cool when the kids get in during summer. Recently, I discovered that when the key fob battery dies, you can use the mechanical key hidden on the back to open the door—a lifesaver in emergencies! A quick tip: avoid storing the key fob near your phone to prevent signal interference and malfunction.

[EmeryDella]

These four button designs are truly ingenious: the unlock button can open all car windows when held down, the lock button simultaneously activates the anti-theft system; the trunk button features pinch protection; the remote start button may fail in signal-blocked areas. The key contains an RFID chip for signal reception, with a theoretical control range of 50 meters, though practical use is recommended within 30 meters. Regular battery replacement is advised to prevent button malfunction—the battery model CR2032 is readily available at convenience stores. The remote key operates reliably in temperatures ranging from -30°C to a high of 80°C.