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: Rail Pressure Sensor (RPS) Description and Operation
Description Rail Pressure Sensor (RPS) is installed on the delivery pipe and measures the instantaneous fuel pressure in the delivery pipe. The sensing element (Semiconductor element) built in the sensor converts the pressure to voltage signal. By using this signal, the ECM can control co ...

Hyundai Sonata LF 2014-2019 Owners Manual: To increase Smart Cruise Control set speed
Follow either of these procedures: Push the toggle switch up (RES+), and hold it. Your vehicle set speed will increase by 5 mph (10 km/h). Release the toggle switch at the speed you want. Push the toggle switch up (RES+), and release it immediately. The cruising speed will increase by 1.0 mp ...