Hyundai Elantra (CN7): Smart Key System / Specifications

Hyundai Elantra (CN7) 2021-2026 Service Manual / Body Electrical System / Smart Key System / Specifications

Specifications
Smart Key Unit
Items
Specification
Rated voltage
DC 12V
Operating voltage
DC 9 - 16V
Operating temperature
-22°F to 167°F (-30°C to 75°C)
Load
Max. 4mA (When welcome light function off)

RF Receiver
Items
Specification
Frequency
433.92 Mhz
Antenna type
FSK (Frequency Shift Keying)

Smart Key Fob
Items
Specification
Battery
Lithium battery 3V 1EA
Distance
30m from vehicle, RF : 30m, Passive(LF) : 0.7m
Battery life
More than 2 years (10 times / a day)
   
•
An inappropriately disposed battery can be harmful to the environment and human health.
•
Dispose the battery according to your local law(s) or regulation.
Push buttons
3 (Door lock / unlock, Trunk)
Frequency(Rx)
125 kHz
Frequency(Tx)
433.92 MHz
Numbers
2EA

Antenna
Items
Specification
Rated voltage
DC 12V
Operating voltage
DC 9 - 16V
Operating temperature
-22°F to 167°F (-30°C to 75°C)
Frequency
125kHz
Numbers
Interior(2EA), Door(2EA), Bumper(1EA), Trunk(1EA)

    Component Location (1)1. Smart key unit (IBU)2. Interior antenna 23. Door outside handle4. Interior antenna 15. BuzzerComponent Location (2)1. Trunk open switch2.

    Repair procedures Smart KeySmart Key Code Saving1.Connect the DLC cable of Diagnostic tool to the data link connector (16 pins) in driver side crash pad lower panel, turn the power on Diagnostic tool.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Troubleshooting

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    Hyundai Elantra (CN7) 2021-2026 Service Manual: Troubleshooting

    TroubleshootingDiagnosis with Diagnostic tool1.In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool).The diagnostic system (Diagnostic tool) provides the following information.1)Fault Code Searching : Checking failure and code number (DTC)2)Data Analysis : Checking the system input/

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