
High-voltage battery fault warning light
What it means
The high-voltage battery fault warning normally goes out after ignition self-check. Persistent or driving-time illumination indicates a monitored system failure, not merely low charge.
What to do
Contact BYD for inspection as soon as possible if it remains on with ignition or stays on or intermittently appears while driving.
Handbook-based owner explanation, not a verbatim quotation. Check the accompanying instrument-panel message.Meaning and response handbook-checkedBYD DOLPHIN · UK RHD-listed 7.2025 EN_V2BYD handbook · PDF p. 37, p. 42