Convenient Features of Your Vehicle

Immobilizer Indicator Light (with Smart Key)

~1min read

This indicator light stays on for up to 30 seconds:

When the vehicle correctly detects the Smart Key inside the vehicle while the ignition switch or Engine Start/Stop button is in the ACC or ON position.

- You can start the engine at this time.
- The indicator turns off after the engine starts.

This indicator flashes for several seconds:

When the Smart Key is not inside the vehicle.

- You cannot start the engine at this time.

This indicator illuminates for 2 seconds and then turns off:

When the vehicle cannot detect the Smart Key inside the vehicle while the ignition switch or Engine Start/Stop button is in the ON position.

In this case, contact an authorized HYUNDAI dealer to have your vehicle inspected.

This indicator flashes:

  • When the Smart Key battery is discharged.
    - The engine cannot be started at this time. However, you can start the engine by pressing the ignition switch or Engine Start/Stop button with the Smart Key. (For more information, refer to "Starting the Engine" in chapter 5).
  • When there is a malfunction in the immobilizer system.
    In this case, have your vehicle inspected by an authorized HYUNDAI dealer.

Test yourself

A quick Hyundai Sonata LF quiz: every answer comes with an explanation and a link to the manual page.