Low-voltage power system fault

Stop soon

Safety warning — do not ignore this light

This warning light indicates a potentially serious fault. Do not continue driving. Stop in a safe location and contact an authorized service center or roadside assistance. Never attempt to inspect high-voltage or safety-critical components yourself.

What this light means

DC/low-voltage power system problem while driving.

Immediate actions

1Turn off nonessential loads, pull over if safe and contact BYD rescue/service.
2Record exact dashboard message, speed, SOC, charging state and conditions.
3Do not dismantle the system; contact authorized BYD service.

What to check

Confirm exact dashboard message

Stop safely for red/critical warnings

Confirm VIN, market and software with dealer

Possible causes

›DC system fault
›12V/low-voltage issue
›charging system interaction

Related warning lights

ABS fault warning light Tire pressure / TPMS warning ESC fault warning light Airbag fault warning light

Sources

✓BYD SEALION 7 owners manual LHD EN 240820

For informational purposes only. Always consult a certified service center for diagnosis and repair of warning light conditions.