Hyundai Sonata: Indicator Lights / Adaptive Front Lighting System (AFLS) Warning Light

This warning light illuminates:

If there is a malfunction with the AFLS:

1. Drive carefully to a safe location and stop the vehicle.

2. Turn the engine off and restart the engine. If the indicator light remains on, have your vehicle inspected by an authorized HYUNDAI dealer.

Light ON Indicator Light
This indicator light illuminates: When the tail lights or headlights are on. ...

Cruise & Cruise SET Indicator Lights
Cruise Indicator Light This indicator light illuminates: When the cruise control system is enabled. Cruise SET Indicator Light This indicator light illuminates: When the cruise control speed is set. ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Temperature Control Actuator Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the temperature control actuator connector. 3. Verify that the temperature control actuator operates to the cool position when connecting 12V to terminal 3 and grounding terminal 7. Verify that the temperature control actuato ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the forward facing sensor. 3. Head a light to the rearward looking sensor. 4. The ECM should be darkened as soon as the rearward looking se ...

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