Push the OFF button of the front to turn off the air climate control system. You can still operate the mode and air intake buttons as long as the ignition switch is in the ON position.
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
1. Front bumper cover2. Front bumper side bracket
...
Hyundai Sonata LF 2014-2019 Service Manual: Turbo Charger Repair procedures
On-vehicle Inspection
Turbocharger Diagnostic Flow
If any problem related with
turbocharger, such as lack of engine power, poor acceleration, abnormal
engine noise or oil leaks, may occur, check the turbocharger according
to the procedure as follows.
1.
Check for assembling of the turb ...