Electric power is used to move the vehicle.
(Battery ➞ Wheel)
Kia Niro 2017 (DE HEV) Service Manual: SRS Control Module (SRSCM) Repair procedures
Removal
1.
Remove the battery (-) cable.
Disconnect the battery negative terminal and wait for at least
thirty seconds before beginning work.
...
Kia Niro 2017 (DE HEV) Service Manual: Spark Plug Specifications
Specification
Item
Specification
Type
ELR9ISP8+
Gap
0.7 - 0.8 mm
(0.0276 - 0.0314 in.)
Electrode Material
Iridium
...