When the battery module state-of-charge (SOC) is at or below the specified value

When the SOC of the battery module drops, idle speed is increased to charge the battery module. CVT model: When the battery module SOC value is low, selecting the L range mode gives priority to battery module charging by lowering the IMA motor assist level, increasing the idle speed, and increasing the regeneration amount (see SYSTEM DESCRIPTION ). Charge priority control is canceled when the battery module SOC reaches about 40%.