If the headlights on your Hyundai Sonata are malfunctioning, they should be fixed immediately. Faulty headlights can obscure road vision and lead to car accidents and serious injury. Loose electrical connections, burned out bulbs and popped fuses create most headlight problems, and all three have a quick fix.
Step 1: Turn off the engine. Allow it to cool down before checking the connections. Open the hood.
Step 2: Lightly tug on the electrical connector at the rear of Sonata’s headlamp assembly. If the connector comes out, securely plug it into the rear of the assembly. If the headlights are still malfunctioning, you may need to replace the bulb.
Step 3: Rotate both of the plastic covers counterclockwise to remove them. The larger cover contains the low-beam bulb and the smaller one contains the high-beam bulb.