Hyundai Elantra (CN7): Smart Key / Mechanical key

If the Smart Key does not operate normally, you can lock or unlock the driver’s 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.

    You can start the engine without inserting the key. Information If the smart key is not moved for some time, the detection function for smart key operation will pause.

    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.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Ambient Temperature Sensor

    Description and operation DescriptionThe ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Heater Core

    Repair procedures Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.Remove the heater core cover (A) after loosening the mounting screws.4.Pull out the heater core (A) from the heater unit.

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