Hybrid battery is being charged by regenerative braking.
(Wheel ➞ Battery)
Kia Niro 2017 (DE HEV) Service Manual: Pressure Source Unit Components and components location
Components
1. Pressure Source Unit (PSU)
2. Motor
3. Filler adapter
4. Accumulator
5. Bracket
...
Kia Niro 2017 (DE HEV) Service Manual: Oil Pump Repair procedures
Removal and Installation
1.
Remove the timing chain cover.
(Refer to Timing System – “Timing Chain Cover”)
2.
Remove the oil level gauge pipe.
(Refer to Lubrication System - "Oil Level Gauge & Pipe")
...