The Smart Cruise Control uses a radar to detect distance to the vehicle ahead.
Radar check message
If the radar or cover is dirty or obscured with foreign matter such as snow, this message will appear. In this case, the system may not function temporarily, but it does not indicate a malfunction of the Smart Cruise Control System. Clean the radar or cover by using a soft cloth.
SCC (Smart Cruise Control) malfunction message
The message will appear when the vehicle to vehicle distance control system is not functioning normally.
Take your vehicle to an authorized HYUNDAI dealer and have the system checked.
CAUTION
Hyundai Sonata LF 2014-2019 Service Manual: Air Cleaner Components and Components Location
Components
1. Air duct2. Air intake hose3. Air cleaner body4. Air cleaner element5. Air cleaner element service cover
...
Hyundai Sonata LF 2014-2019 Service Manual: Heater & A/C Control Unit (DATC) Components and Components Location
Components
Connector [A]
Pin NOFunctionPin NOFunction1ILL+ (TAIL)21Detent OUT (+)2Sensor REF (+5V)22HTD (Rear defog indicator)3Mode control actuator (Vent)23Rear defog switch4Mode control actuator (Defrost)24C_CAN High5Mode control actuator (Feedback)25C_CAN Low6Intake actuator (Fresh)26ECV+7Int ...