Hyundai Sonata LF 2014-2019 Owners Manual: Power Brakes
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 stoppin ...
Hyundai Sonata LF 2014-2019 Owners Manual: Indicator lights
When the ignition switch is placed to the ON position, the ESC indicator light
illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever the ESC is operating.
If ESC indicator light stays on, your vehicle may have a malfunction with the
ESC system ...