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: Description and Operation
Description System Overview The System offers the following features: - Human / machine interface through a 1-stage button, for terminal switching and engine start. - Control of external relays for ACC / IGN1 / IGN2 terminal switching and STARTER, without use of mechanical ignition swit ...

Hyundai Sonata LF 2014-2019 Service Manual: Roller Blind Repair procedures
Removal 1. Open the roller blind using the panorama sunroof switch.     • Leave 10 ~ 20cm (0.3937 ~ 0.7874 in) of the roller blind unopened. 2. Remove the roof trim. (Refer to Roof Trim - "Roof Trim Assembly") 3. Remove the roller blind bar (C) by pressing th ...

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