If the shift lever cannot be moved from the P (Park) position into R (Reverse) position with the brake pedal depressed, continue depressing the brake, and then do the following:
1. Place the ignition switch in the LOCK/OFF position.
2. Apply the parking brake.
3. Carefully remove the cap (1) covering the shift-lock release access hole.
4. Insert a tool (e.g. flathead screwdriver) into the access hole and press down on the tool.
5. Move the shift lever.
6. Remove the tool from the shiftlock override access hole then install the cap.
If you need to use the shift-lock release, have your vehicle inspected by an authorized HYUNDAI dealer immediately.
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location
1. Horn switch2. Horn relay (Built - in Metal Core Block PCB)3. Horn (Low pitch)4. Horn (High pitch)5. Clock spring
...
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 ...