Hyundai Sonata: Indicator Lights / Immobilizer Indicator Light (Without Smart Key)

This indicator light illuminates:

When the vehicle detects the immobilizer in your key properly while the ignition switch is ON.

- At this time, you can start the engine.
- The indicator light goes off after starting the engine.

This indicator light blinks:

When there is a malfunction with the immobilizer system.

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

Electronic Stability Control (ESC) OFF Indicator Light
This indicator light illuminates: Once you set the ignition switch or the Engine Start/Stop button to the ON position. - It illuminates for approximately 3 seconds and then goes off. When you d ...

Immobilizer Indicator Light (With Smart Key)
This indicator light illuminates for up to 30 seconds: When the vehicle detects the smart key in the vehicle properly while the ignition switch or the Engine Start/ Stop button is ACC or ON. - At th ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Important Safety Precautions
You will find many safety precautions and recommendations throughout this section, and throughout this manual. The safety precautions in this section are among the most important. Always Wear Your Seat Belt A seat belt is your best protection in all types of accidents. Air bags are designed to su ...

Hyundai Sonata LF 2014-2019 Service Manual: A/C Pressure Transducer Repair procedures
Inspection 1. Measure the pressure of high pressure line by measuring voltage output between terminal "1" and "2". 2. Inspect the voltage value whether it is sufficient to be regular value or not. Vdd * (0.001758 * Pressure(Psia) + 0.074126 3. If the measured voltage value is not wi ...

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