The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory.
Check the antifreeze protection and coolant level at least once a year, at the beginning of the winter season and before traveling to a colder climate.
Hyundai Sonata LF 2014-2019 Service Manual: AVN Remote Controller Repair procedures
Inspection
1.
Check for resistance between terminals in each switch position (LH).
[LH : Audio + Hands free]
SwitchConnectorTerminalResistance(±5%)SEEK Up2-5430 ?SEEK Down1.11 k?MODE2.11 k?MUTE3.11 k?Volume (+)4.61 k?Volume (-)6.81 k?Voice10.71 k?SEND18.91 k?END40.91 k?
2.
Check for res ...
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
1. Lower cover2. Steering wheel3. Clock Spring4. Driver Airbag (DAB)5. Remote control switch
...