SpecificationsHyundai Elantra AD (2016-2020) Service Manual: Refrigerant Line Repair procedures
Replacement
1.
If the compressor is marginally operable, run the engine at
idle speed, and let the air conditioning work for a few minutes, then
shut the engine off.
2.
Disconnect the negative (-) battery terminal.
3.
Recover the refrigerant with a recovery / charging station.
...
Hyundai Elantra AD (2016-2020) Owners Manual: Anti-lock Brake System (ABS)
WARNING
An Anti-Lock Braking System (ABS) or an Electronic Stability Control (ESC)
system will not prevent accidents due to improper or dangerous driving maneuvers.
Even though vehicle control is improved during emergency braking, always maintain
a safe distance between you and objects ahead ...