Your vehicle's brake system is powerassisted by the electric hydraulic pump.
In the event the brakes lose power because of a brake control system malfunction, unstable power supply or some other reason, you can still stop your vehicle by applying greater force to the brake pedal than you normally would. The stopping distance, however will be longer. Please have the system checked as soon as possible.
If the brake pedal does not return to its normal position when released, there may be a malfunction in the brake system. We recommend that you contact an authorized Kia dealer.
WARNING - Brakes
✽ NOTICE
Kia Niro 2017 (DE HEV) Service Manual: Fuel Pressure Control Valve (FPCV) Repair procedures
Inspection
1.
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
2.
Disconnect the fuel pressure regulator valve connector.
3.
Measure resistance between the fuel pressure regulator ...
Kia Niro 2017 (DE HEV) Service Manual: Stop Lamp Switch Components and components location
Components
1. Pedal stroke sensor
2. Stop lamp switch
3. Brake pedal arm
...