Hyundai Sonata: Smart Key / 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 or tow the vehicle, if necessary.

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 mechanic ...

Smart key precautions
The smart key will not work if any of the following occur: The smart key is close to a radio transmitter such as a radio station or an airport which can interfere with normal operation of the tran ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Headlamp, Position Lamp, Turn Signal Lamp and Side Marker Light Bulb Replacement
(1) Headlamp (Low) (2) Headlamp (High) (3) Turn signal lamp (4) Front side marker (5) Daytime running lamp/ Parking lamp Headlamp (Halogen bulb) WARNING Handle halogen bulbs with care. Halogen bulbs contain pressurized gas that will produce flying pieces of glass that could cause injuries if b ...

Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation
Description of ESP Optimum driving safety now has a name : ESP, the Electronic Stability Program. ESP recognizes critical driving conditions, such as panic reactions in dangerous situations, and stabilizes the vehicle by wheel-individual braking and engine control intervention with no need ...

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