Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: Heated Steering Wheel
When the ignition switch is in the ON position or when the engine is running,
press the heated steering wheel button to warm the steering wheel. The indicator
on the button will illuminate.
To turn the heated steering wheel off, press the button again. The indicator
on the button will turn off.
...
Hyundai Sonata LF 2014-2019 Service Manual: Blower Motor Repair procedures
Inspection
1.
Connect the battery voltage and check the blower motor rotation.
2.
If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.
3.
Replace the blower motor if it is proved that there is a problem with it.
Replacem ...