Headlight cleaning systems are systems to clean the front headlights of vehicles. They improve visibility in the darkness and prevent glare for oncoming traffic due to diffused light.
Headlight cleaning systems are legally prescribed for light sources with a luminous flux of over 2000 lumens. This includes Xenon headlights in particular (exception: 25-watt version).
In the past, headlight cleaning systems were often designed with small wipers which were supposed to move the dirt away; nowadays, a cleaning principle using water jets is prevalent. The advantages are the simple design and a more discreet appearance.