Imagine this. Bags packed. Family in the car. You're ready for a road trip and buzzing with excitement. You press the start button and… nothing. You try again. Nothing. You grab the key fob, hold it right next to the start button like you've seen people do online. Still nothing. You try the boot — no reaction. The car is completely dead.

But here's the thing — you charged it to 100% the night before. The battery is fine. So what on earth is going on?

This is exactly what happened to me.

Your BYD Seal has likely gone into a deep sleep mode. Don't panic — here's how to wake it up.

Step 1: Wake the car up

Take your key fob out of the car. Stand outside at the driver's door, position the key close to the door handle, and press the button on the door handle 5 consecutive times. You should see the car start to come back to life.

(There's also an alternative method: hold the door handle button down for 10 seconds. Apparently this works on all BYD vehicles, not just the Seal — though I haven't personally tried this one.)

Step 2: Initialise the car

After waking it up, there's one more step. The car will show you a message asking you to check the EPB system. Follow the prompts — it will then ask you to turn the steering wheel all the way to the left, then all the way to the right, then back to centre. Think of it as the car doing a quick stretch after a deep sleep.

After that, you should be good to go.

Honestly, I'm not 100% sure — but I have a theory.

This has happened to me twice now. The first time, I had left the hood open for about half an hour while packing for the road trip. The second time, I just had some bags sitting next to the frunk for about five minutes. Both times, the car went into deep sleep mode shortly after.

My best guess? The car detected something unusual around the hood area and assumed it was in a service mode. So it shut itself down to protect the system. Makes sense in theory — but not great timing when your family is waiting in the car ready to leave.

Watch the demo on how to revive and recalibrate the EPB system my YouTube channel.

Have you had this happen to your BYD Seal? Or any other BYD vehicle? Drop a comment below — I'd love to know how many people have run into this. And if this helped you, share it with your BYD-owning friends. One day it might just save their road trip too.