Your vehicle has power-assisted brakes that adjust automatically through normal usage.
If the engine is not running or is turned off while driving, the power assist for the brakes will not work. You can still stop your vehicle by applying greater force to the brake pedal than typical. The stopping distance, however, will be longer than with power brakes.
When the engine is not running, the reserve brake power is partially depleted each time the brake pedal is applied. Do not pump the brake pedal when the power assist has been interrupted.
Pump the brake pedal only when necessary to maintain steering control on slippery surfaces.
WARNING
Take the following precautions:
Hyundai Kona (OS) 2018-2024 Service Manual: Oil hydraulic Motor(Actuator) Repair procedures
Inspection
•
If you have trouble code related to the oil hydraulic motor
(actuator), check oil hydraulic motor (actuator) according to
the inspection process.
...
Hyundai Kona (OS) 2018-2024 Service Manual: Smart Key Diagnostic Repair procedures
Inspection
Self Diagnosis with Scan Tool
It will be able to diagnose defects of SMART KEY system with GDS quickly.
GDS can operates actuator forcefully, input/output value monitoring and
self diagnosis.
The following three features will be major problem in S ...