Kia Niro 2017 (DE HEV) Service Manual: General safety information and caution
Safety Precaution
Precautions to take before servicing
high voltage system
Hybrid vehicles have high voltage batteries. Incorrect handling
of high voltage sy ...
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.
  ...