WARNING Removing radiator cap
WARNING
The electric motor (cooling fan) is controlled by engine coolant temperature, refrigerant pressure and vehicle speed. It may sometimes operate even when the engine is not running. Use extreme caution when working near the blades of the cooling fan so that you are not injured by a rotating fan blades. As the engine coolant temperature decreases, the electric motor will automatically shut off. This is a normal condition.
If your vehicle is equipped with GDI, the electric motor (cooling fan) may operate until you disconnect the negative battery cable.
Kia Niro 2017 (DE HEV) Service Manual: Curtain Airbag (CAB) Module Components and components location
Components
1. Curtain Airbag (CAB)
...
Kia Niro (DE HEV) Owners Manual: Battery replacement
■ Folding key
■ Smart Key
A transmitter uses a 3 volt lithium battery which will normally last for several
years. When replacement is necessary, use the following procedure.
1. Insert a slim tool into the slot and gently pry open the folding key center
cover or Pry open the rear cover ...