The mode means the vehicle at stop. (There is no energy flow.)
Kia Niro 2017 (DE HEV) Service Manual: Coolant Repair procedures
Refilling And Bleeding
Never remove the cap when the engine is hot. Serious scalding could be
caused by hot fluid under high pressure escaping from the reservoir.
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Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Component Location
1. Hood switch
2. Burglar horn
3. Body control module (BCM)
4. Door lock / unlock buzzer
5. Front door actuator & switch
6. Rear door actuator & switch
7. Tailgate actuator & switch
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