Hyundai Sonata headlights blink when using left turn signal on Hyundai Sonata

Some Hyundai Sonata owners report experiencing issues with their headlights blinking when using the left turn signal, which may be linked to several potential causes. These owners have noted that a faulty turn signal/headlight switch stalk on the steering column could lead to the headlights blinking off intermittently when the turn signal is activated. Additionally, some report rapid blinking or hyperflash of the indicator lights, indicating an abnormal flashing rate that may also contribute to the problem. In certain cases, an intermittent internal fault within the multi-functional switch has been identified, causing both headlights and interior lights to blink unexpectedly while driving. One owner found that replacing the turn signal stalk and all related light controls resolved the flickering issue, suggesting that a defective switch or control may be at fault. It is advisable for those experiencing these symptoms to seek inspection from a qualified mechanic or dealership to accurately diagnose and rectify the issue.