Hyundai Ioniq: Driving the Hybrid/Plug-in Hybrid Vehicle / Plug-in Hybrid Mode (Plug-in hybrid vehicle)
EV/HEV Button

Pressing the [EV/HEV] button changes the plug-in hybrid system modes, between
Electric (CD) mode and Hybrid (CS) mode.
Each time the mode is changed a corresponding indicator is displayed on the instrument
cluster as follows.
Plug-in Hybrid Mode Indicator
• CD (Charge Depleting, Electric) mode

: The high-voltage (hybrid) battery is used to drive the vehicle.
• CS (Charge Sustaining, Hybrid) mode

: The high-voltage (hybrid) battery and gasoline engine is used to drive the
vehicle.
Information
Even when the battery charging rate is high and driving in electric mode is
possible, engine may turn on in some areas to protect the system.
The hybrid system gauge indicates whether the current driving condition is fuel
efficient or not.
• CHARGE :
Shows that the energy made by the vehicle is being converted to electrical energy...
Press [PHEV] on the [Home] screen or the [All menus] screen and the menus related
to plug-in hybrid ([ECO Driving], [Energy Information], [EV Range], [Charging Settings],
[Charging Stations], [Gas Stations]) are displayed...
Other information:
■ Engine coolant
■ Inverter coolant
Check the condition and connections of all cooling system hoses and heater hoses.
Replace any swollen or deteriorated hoses.
The coolant level should be filled between the MAX and the MIN marks on the side
of the coolant reservoir when the engine is cool...
DescriptionThe high voltage battery system consists of the BMS ECU (Battery Management System ECU), Power Relay Assembly (PRA), safety plug, battery temperature sensor, and battery ambient sensor. Especially the BMS ECU controls SOC (State Of Charge), power, cell balancing, cooling and troubleshooting of the high voltage battery system...