The interior lights automatically turn off approximately 20 minutes after the ignition switch is turned off.
If your vehicle is equipped with the theft alarm system, the interior lights automatically turns off approximately 3 seconds after the system is armed stage.
Kia Niro (DE HEV) Owners Manual: ACC (Accessory)
Amber
Press the engine start/stop button while it is in the OFF position without depressing
the brake pedal.
The steering wheel unlocks (if equipped with anti-theft steering column lock)
and electrical accessories are operational.
If the engine start/stop button is in the ACC position for m ...
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
...