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) Service Manual: Smart Cruise Control Unit Repair procedures
Removal
1.
Remove the bumper.
(Refer to Body - "Front Bumper")
2.
Disconnect the smart cruise control unit connector (A).
3.
Remove the smart cruise control unit assembly (B) from vehicle after loosening mounting bolts.
Installation
1.
Install in the reverse order of removal. ...