BYD Seal — Working Modes of Dual-Mode (DM) System

● In HEV mode, the engine supplies power to the high-voltage battery and drive motor. 01 SAFETY REMINDER ● The vehicle may switch to HEV mode automatically under operating conditions such as rapid acceleration, high vehicle speed, grade climbing, high or low temperature, low SOC level or the need of engine maintenance. Switch to EV mode manually if needed when EV conditions are meeted. It is recommanded to choose HEV mode under high or low temperature conditions. ● In HEV mode, the engine and the high-voltage battery simultaneously supply power to the drive motor. "HEV" - Dual-Mode Synergy Operating Mode:

● In HEV mode, when the SOC level is high or the power demand is low, the vehicle system prioritizes EV drive, without starting the engine. ● In HEV mode, the engine starts to operate in parallel at medium and high speeds under some working conditions to improve fuel economy. ● In HEV mode, the engine and drive motor work together to drive the vehicle. ● In HEV mode, when the SOC level is low or the power demand is high, the engine starts and operates in series to meet the power demand. 31