Hyundai Sonata: Indicator Lights / Electronic Stability Control (ESC) OFF Indicator Light

Hyundai Sonata LF 2014-2019 Owners Manual / Convenient features of your vehicle / Indicator Lights / 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 deactivate the ESC system by pressing the ESC OFF button.

Electronic Stability Control (ESC) 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 there ...

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 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Stop Lamp Switch Troubleshooting
Troubleshooting 1. Part diagnosis Items Cause Symptom Switch fuse Faulty fuse connection, Damaged fuse - DTC Code : P0504 - Symptom : Shifting gear trouble, Starting failure, Cruise control function cancelation trouble, EPB function cancelation trouble, Stop lamp light ...

Hyundai Sonata LF 2014-2019 Service Manual: Accelerator Position Sensor (APS) Repair procedures
Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Turn the ignition switch ON. 3. Measure the output voltage of the APS 1 and 2 at C.T and W.O.T. Specification: Refer to “Specification” ...