Hyundai Elantra (CN7): Button Engine Start System / Start/Stop Button

Components and components location

Component

Repair procedures

Removal
1.
Disconnect the negative(-) battery terminal.
2.
Remove the AVN Head unit.
(Refer to Body Electrical System - "AVN(Audio Video Navigation) head unit")
3.
Loosen the mounting screws and remove the start/stop button (A).

Installation
1.
Install the start/stop button.
2.
Install the AVN head unit.
3.
Connect the negative (-) battery terminal.

    Component Location1. Smart key unit (IBU)2. Interior antenna 23. outside door handle4. Interior antenna 15. FOB Key6. Door antenna1. Bumper antenna2. Trunk antenna

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: Mode Control Actuator

    Description and operation DescriptionThe mode control actuator is located at the heater unit.It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit. Pressing the mode select switch makes the mode control actuator shift in order of Vent → Bi-Level → Floor → Mix.

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

    Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed se

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