Hyundai Sonata: Convenient features of your vehicle / Door locks

Immobilizer System

The immobilizer system protects your vehicle from theft. If an improperly coded key (or other device) is used, the engine's fuel system is disabled. When the ignition switch is placed in the ON posit ...

Operating Door Locks from Outside the Vehicle

Mechanical key If you lock the driver's door with a mechanical key, all vehicle doors will lock. If you unlock the driver's door with a mechanical key, the driver's door will unlock. Once the doors ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation
Description The cruise control system is engaged by the cruise "ON/OFF" main switch located on right of steering wheel column. The system has the capability to cruise, coast, accelerate and resume speed. It also has a safety interrupt, engaged upon depressing brake or shifting select lever. ...

Hyundai Sonata LF 2014-2019 Owners Manual: Cruise Control will be canceled when
Depressing the brake pedal. Pressing the CANCEL switch located on the steering wheel. Pushing the CRUISE button. Both the CRUISE indicator and the SET indicator will turn OFF. Moving the shift toggle switch into N (Neutral). Decreasing the vehicle speed lower than the memory speed by 5 mph ...