If the Smart 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 smart key.
2. Remove the old battery and insert the new battery.
3. Reinstall the rear cover of the smart key.
If you suspect your smart key might have sustained some damage, or you feel your smart 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(s).
Hyundai Sonata LF 2014-2019 Service Manual: General Safety Information and Caution
Instructions
When Handling Refrigerant
1.
R-134a liquid refrigerant is highly volatile. A drop on the
skin of your hand could result in localized frostbite. When handling the
refrigerant, be sure to wear gloves.
2.
It is standard practice to wear goggles or glasses to protect
your eye ...
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location Index
Engine Room
[Theta 2.4 GDI]
1. Receiver-drier2. Condenser3. Service Port (High Pressure)4. Service Port (Low Pressure)5. A/C Pressure Transducer (APT)6. Compressor7. Suction & Liquid Tube Assembly8. Expansion Valve9. Ambient temperature Sensor
[Gamma 1.6 T-GD ...