This warning light illuminates :
Hyundai Sonata LF 2014-2019 Owners Manual: Antenna
Shark fin antenna (1)
The shark fin antenna will receive the transmit data.
Glass antenna (2)
Your vehicle uses a glass antenna to receive both AM and FM signals.
NOTICE
Do not clean the inside of the rear window glass with a cleaner or scraper
to remove foreign deposits as this may cause damag ...
Hyundai Sonata LF 2014-2019 Service Manual: Temperature Control Actuator Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the temperature control actuator connector.
3.
Verify that the temperature control actuator operates to the
cool position when connecting 12V to terminal 3 and grounding terminal
7.
Verify that the temperature control actuato ...