Hyundai Sonata: Accessing your vehicle / Smart Key

Your HYUNDAI uses a Smart Key, which you can use to lock or unlock a door (and trunk) and even start the engine.

1. Door Lock
2. Door Unlock
3. Trunk Open
4. Panic

Locking

To lock :

1. Close all doors, engine hood and trunk.

2. Either press the door handle button or press the Door Lock button (1) on the smart key.

3. The hazard warning lights will blink and the chime will sound once.

4. Make sure the doors are locked by checking the position of the door lock button inside the vehicle.

Information

The door handle button will only operate when the smart key is within 28~40 inches (0.7~1 m) from the outside door handle.

Even though you press the outside door handle button, the doors will not lock and the chime will sound for three seconds if any of the following occur:

WARNING

Do not leave the Smart Key in your vehicle with unsupervised children. Unattended children could press the Engine Start/ Stop button and may operate power windows or other controls, or even make the vehicle move, which could result in serious injury or death.

Unlocking

To unlock:

1. Carry the Smart Key.

2. Either press the driver's outside door handle button or press the Door Unlock button (2) on the smart key.

3. The driver's door will unlock. The hazard warning lights will blink two times.

If you press the driver's outside door handle button or Door Unlock button on the smart key again within four seconds, then all the doors will unlock.

Information

Trunk opening

To open:

1. Carry the smart key.

2. Either press the trunk handle button or press and hold the Trunk Unlock button (3) on the smart key for more than one second.

3. The hazard warning lights will blink two times.

Once the trunk is opened and then closed, the trunk will lock automatically.

Information

The trunk handle button will only operate when the smart key is within 28 inches (0.7 m) from the trunk handle.

Panic button

Press the Panic button (4) and hold for more than one second. The horn sounds and hazard warning lights blink for about 30 seconds. To cancel the panic mode, press any button on the Smart Key.

Battery replacement
If the remote 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 remote key. 2. Remove the old batt ...

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 ...

Other information:

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Hyundai Sonata LF 2014-2019 Service Manual: Power Door Mirror Actuator Components and Components Location
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