Hyundai Elantra (CN7): Smart Key / Battery replacement

If the Smart Key is not working properly, try replacing the battery with a new one.

Battery Type: CR2032

To replace the battery:

1. Remove the mechanical key.

2. Use a slim tool to pry open the rear cover of the smart key.

3. Remove the old battery and insert the new battery. Make sure the battery position is correct.

4. Reinstall the rear cover of the smart key.

If you suspect your smart key might have sustained some damage, or you feel your smart key is not working correctly, contact an authorized HYUNDAI dealer.

Information

An inappropriately disposed battery can be harmful to the environment and human health. Dispose of the battery according to your local law(s) or regulation.

    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.

    The immobilizer system protects your vehicle from theft. If an improperly coded key (or other device) is used, the engine’s fuel system is disabled.

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Condenser

    Components and components location Components Location[General type]1. Condenser[N Line]1. Condenser Repair procedures Inspection1.Check the condenser fins for clogging and damage. If clogged, clean them with water, and blow them with compressed air.

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Power Mosfet

    Description and operation DescriptionIt is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor. Repair procedures Inspection1.Manually operate the control switch and measure the voltage of the blower motor.

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