Hyundai Sonata: Smart Key / Mechanical key
If the Smart Key does not operate normally, you can lock or unlock the door by using the mechanical key.
Press and hold the release button (1) and remove the mechanical key (2). Insert the mechanical key into the key hole on the door.
To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
Start-up
You can start the engine without inserting the key.
NOTICE
To prevent damaging the smart key:
Keep the smart key away from water or any liquid and fire. If the inside
of the smart key gets damp (d ...
Loss of a smart key
A maximum of two Smart Keys can be registered to a single vehicle. If you happen
to lose your smart key, you should immediately take the vehicle and remaining keys
to your authorized HYUNDAI dealer ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Battery Components and Components Location
Components
1. Battery insulation pad2. Battery3. Battery tray4. Battery mounting bracket
...
Hyundai Sonata LF 2014-2019 Service Manual: Ignition Coil Specifications
Specification
ItemSpecification Primary Coil Resistance (?)0.56 ± 10% [20°C (68°F)]Secondary Coil Resistance (k?)2.0 ± 15% [20°C (68°F)]
...
