Welcome light
Door handle lamp
When all the doors (and trunk) are closed and locked, the door handle lamp will come on for about 15 seconds if any of the below is performed.
Headlamp and Parking lamp
When the headlamp (lamp switch in the headlamp or AUTO position) is on and all doors (and trunk) are locked and closed, the parking lamp and headlamp will come on for 15 seconds if/or any of the below is performed.
At this time, if you press the door lock or unlock button on the remote key or smart key the parking lamp and headlamp will turn off immediately.
You can activate or deactivate the Welcome Light from the User Settings Mode (Light) on the LCD display.
Interior lamp
When the interior lamp switch is in the DOOR position and all doors (and trunk) are closed and locked, the room lamp will come on for 30 seconds if any of the below is performed.
At this time, if you press the door lock or unlock button on the remote key or smart key the room lamp will turn off immediately.
Hyundai Sonata LF 2014-2019 Service Manual: Specifications
Specifications
Smart Key Unit
ItemsSpecificationRated voltageDC 12VOperating voltageDC 9 ~ 16VOperating temperature-22°F ~ 176°F (-30°C ~ 80°C)LoadMax. 4mA (When welcome light function off)
RF Receiver
ItemsSpecificationFrequency433.92 MhzAntenna typeFSK (Frequency Shift Keying)
Smart ...
Hyundai Sonata LF 2014-2019 Service Manual: Important Safety Notice
General Information
Proper service methods and repair procedures are essential
for safe, reliable operation of all motor vehicles as well as personal
safety of the operator. The service procedures and descriptions in this
shop manual provide general directions for a service and repair.
...