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:
Braking System
Disc Brakes Wear Indicator, Rear Drum BrakesHyundai Elantra AD (2016-2020) Service Manual: Repair procedures
Inspection
[EVAP. Leakage Test]
1.
Select "Evap. Leakage Test".
2.
Proceed with the test according to the screen introductions.
[PCSV Inspection]
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Disconnect the PCSV connector (A).
3.
Disconnec ...
Hyundai Elantra AD (2016-2020) Owners Manual: Limitations of the System
The Smart Cruise Control system may have limits to its ability to detect distance
to the vehicle ahead due to road and traffic conditions.
On curves
The Smart Cruise Control system may not detect a moving vehicle in your
lane, and then your vehicle could accelerate to the set speed. Also ...