If the remote key is not working properly, try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
1. Pry open the rear cover of the remote key.
2. Remove the old battery and insert the new battery. Make sure the battery position is correct.
3. Reinstall the rear cover of the remote key.
If you suspect your remote key might have sustained some damage, or you feel your remote key is not working correctly contact an authorized HYUNDAI dealer.
Information
An inappropriately disposed battery can be harmful to the environment and human health. Dispose the battery according to your local law(s) and regulation.
Hyundai Sonata LF 2014-2019 Service Manual: Shift Lever Components and Components Location
Components (1)
1. Shift lever knob2. Shift lever assembly3. Shift cable4. Shift cable retainer
Components (2)
1. Shift lever assembly2. P position switch3. shift lock solenoid4. Main connector5. Manual mode siwtch housing
...
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location
1. Auto light sensor2. Head lamps3. Lighting switch (Auto)4. Tail lamps5. BCM (Body Control Module)
...