⚠
Red lightCritical
Low-voltage power system fault warning light
Stop soonSafety 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
If this light turns on while driving, the charging/DC/low-voltage power supply system may have a problem. The handbook says the engine ignition can continue only until the battery is discharged.
Immediate actions
- 1Turn off A/C and fan if safe.
- 2Drive to the nearest BYD authorized dealer or service provider for maintenance.
- 3Do not ignore repeated low-voltage power warnings.
What to check
Record exact icon/message, driving or charging state and recent conditions
Follow the owner handbook escalation for the warning severity
Do not repair HV, brake, steering, airbag, ADAS, fuel or wiring systems yourself
Possible causes
- ›Official SEALION 5 owner handbook warning-light/dashboard-message chapter.
- ›Exact root cause requires BYD diagnostic inspection; no DTC code is published from this summary.
Related warning lights
Sources
✓BYD New Zealand SEALION 5 owner handbook PDF
For informational purposes only. Always consult a certified service center for diagnosis and repair of warning light conditions.