
ACC fault warning light*
What it means
The amber VMAX-circle identifies ACC unavailable due to a fault. An attempt to activate it can produce a function-unavailable prompt.
What to do
Do not rely on ACC to control speed or following distance. Keep manual control and read the accompanying prompt. This handbook directs professional BYD calibration and inspection when ACC performance is impaired or the instrument cluster reports a system error, and after camera removal, wheel alignment or a collision.
Handbook-based owner explanation, not a verbatim quotation. Check the accompanying instrument-panel message.Meaning and response handbook-checkedBYD ATTO 3 EVO · UK handbook 12.2025 EN_V0BYD handbook · PDF p. 128, p. 134, p. 135