What causes the light failure warning light to illuminate in the Volkswagen Touran?

[Jude]

When the light failure warning light illuminates, it indicates a malfunction in the vehicle's lighting system, which could be due to a burnt-out bulb, poor bulb contact, or a blown fuse. If you notice the light failure warning light is on, you should safely pull over as soon as possible to check the specific cause. Introduction to vehicle warning lights: Vehicle warning lights are indicator lights that illuminate when certain faults occur in the vehicle. For example, if the battery is dead, the battery warning light will illuminate. Introduction to common vehicle faults: Vehicle faults refer to phenomena where the car cannot perform its intended functions, such as difficulty starting the engine, failure to start, oil or water leaks, or malfunctioning lighting systems.