Hybrid System Overview
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Approaching vehicle audible system
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Engine
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Front motor
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High voltage battery
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Rear motor
Engine
Engine power is used during normal driving and acceleration. The engine stops when stopping, accelerating from a stop, driving at low speed, or driving downhill.
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The engine starts or stops automatically. The engine may not stop automatically under the following conditions.
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The engine is warming up.
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The high voltage battery is charging.
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The high voltage battery temperature is high or low.
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The heating is being used.
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If the lead-acid battery terminals were disconnected due to a dead lead-acid battery or a lead-acid battery replacement, the engine may not stop even when the vehicle is running on the high voltage battery. If this condition continues for 2 to 3 days, contact an Authorized Mazda Dealer.
Front motor/Rear motor
The front motor/rear motor power is used when accelerating from a stop, driving at low speeds, or driving downhill. When the vehicle is driven only by the front motor/rear motor, the EV indication 
in the instrument cluster turns on. The front motor/rear motor is used to assist the engine during normal driving and acceleration. When braking, the motor is used to decelerate the vehicle and the motor is used as a generator to charge the high voltage battery.
Regenerative braking
Regenerative braking uses the motor to decelerate the vehicle. Power is generated by the wheels rotating the motor while decelerating and the generated power is stored in the high voltage battery.
When the gasoline particulate filter is removing particulate matter (PM), it may not be possible to charge the high voltage battery.
High voltage battery
The electric power generated by the regenerative braking is stored in the high voltage battery. This eliminates the need for charging from outside the vehicle.
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The vehicle should be driven for about 30 minutes or 16 km (10 miles) every 2 to 3 months because the high voltage battery gradually discharges itself when the vehicle is left unattended for long periods of time. If the high voltage battery discharges completely and the hybrid system cannot be started, contact an Authorized Mazda Dealer.
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The high voltage battery life changes depending on the vehicle storage conditions or driving conditions.
Approaching vehicle audible system
The approaching vehicle audible system notifies pedestrians that the vehicle is approaching using an audible sound when the vehicle is being driven by the motor only. The notification sound is activated when the vehicle speed is 41 km/h (25 mph) or slower.
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In the following cases, it may be difficult for surrounding people to hear the notification sound.
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The surrounding noise level is high.
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In rain or strong winds.
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Because the approaching vehicle audible system is installed at the front of the vehicle, it may be more difficult to hear the notification sound at the rear of the vehicle than at the front.
