The SMART mode may be limited in following situations. (The OFF indicator illuminates in those situations.)
Hyundai Sonata LF 2014-2019 Owners Manual: Wireless Cellular Phone Charging System
There is a wireless cellular phone charging inside the front console.
The system is available when all doors are closed, and when the Engine Start/Stop
button is in the ACC/ON position.
To charge a cellular phone
The wireless cellular phone charging system charges only the Qi-enabled cellular
pho ...
Hyundai Sonata LF 2014-2019 Service Manual: Crankshaft Position Sensor (CKPS) Description and Operation
Description
Crankshaft Position Sensor (CKPS) detects the crankshaft
position and is one of the most important sensors of the engine control
system. If there is no CKPS signal input, the engine may stop because of
CKPS signal missing.
This sensor is installed in ladder frame and generates ...