Hyundai Sonata: Smart Key / Start-up

You can start the engine without inserting the key.

NOTICE

To prevent damaging the smart key:

NOTICE

Always have the smart key with you when leaving the vehicle. If the smart key is left near the vehicle, the vehicle battery may be discharged.

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 do ...

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 ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: LCD Modes
Shift to P to edit settings This warning message illuminates if you try to select the other User Settings item when driving. For safety, change the User Settings after parking the vehicle and moving the shift lever to P (Park) position. Quick guide (Help, if equipped) Press and hold the OK butto ...

Hyundai Sonata LF 2014-2019 Service Manual: Engine Coolant Temperature Sensor (ECTS) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Remove the ECTS (Refer to "Removal"). 3. After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 3 and 4. 4. Check that the resistance is within the specification. Specification: ...

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