Why Are Both Left and Right Turn Signals Lighting Up Simultaneously?

[LaHaven]

When both the left and right turn signals of a car light up at the same time, it could be due to the hazard lights being turned on, the car's anti-theft system activating, or a computer malfunction. Hazard lights switch turned on: If the hazard lights switch is activated or stuck in the on position, it will cause both turn signals to light up simultaneously. In emergency situations, when the hazard warning signal switch is engaged, all turn signals flash together to indicate that the vehicle is in an emergency and requests other vehicles to yield. Car anti-theft system activation: If an unauthorized key is used to enter the car or any other form of illegal entry occurs, it may cause both turn signals to light up simultaneously. Circuit malfunction: Water ingress into the vehicle's computer or the presence of condensation, among other issues.