If the EPB Malfunction Indicator remains on, comes on while driving, or does not come on when the Engine Start/Stop button is in the ON position, this indicates the EPB may have malfunctioned. Have your vehicle checked by an authorized HYUNDAI dealer as soon as possible.
The EPB Malfunction Indicator may illuminate when the ESC indicator comes on to indicate that the ESC is not working properly, but it does not indicate a malfunction of the EPB.
NOTICE
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
[General Type]
1. Roof trim2. Sunvisor [LH]3. Sunvisor [RH]4. Assist handle bracket
[Panorama Sunroof Type]
1. Roof trim2. Sunvisor [LH]3. Sunvisor [RH]4. Assist handle bracket
...
Hyundai Sonata LF 2014-2019 Service Manual: TPMS Receiver Schematic Diagrams
Circuit Diagram
Terminal function
Pin NO.Discription1Battery (+)2IGN3CAN_Low4CAN_High5-6Ground
...