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 Service Manual: Description and Operation
Description BSD is a system that uses two magnetic wave radar sensors attached on the rear panel to measure the distance from the following vehicles and provides the sensing and (visual and auditory) alarm of any vehicle coming into the blind spot. - Blind Spot Detection (BSD) : Senses o ...

Hyundai Sonata LF 2014-2019 Owners Manual: Sunroof
If your vehicle is equipped with a sunroof, you can slide or tilt your sunroof with the sunroof control switch located on the overhead console. The sunroof can only be opened, closed, or tilted when the ignition switch is in the ON position. The sunroof can be operated for approximately 30 second ...

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