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: Water pump Repair procedures
Removal
1.
Loosen the drain plug (A), and drain the engine coolant. Remove the radiator cap to drain with speed.
System is under high pressure when the engine is hot.To avoid
danger of releasing scalding engine coolant, remove the cap only when
the engine is cool.
...
Hyundai Sonata LF 2014-2019 Service Manual: Room Lamp Repair procedures
Removal
Room Lamp (Non-Panorama Sunroof)
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, Separate the room lamp lens (A) from the room lamp.
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Put on gloves to prevent hand injuries.
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When removing with a flat-tip screwdrive ...