Function

When it starts running the washing water pump builds up pressure in the washing water line. The nozzles extend in a telescopic manner at a pressure of 1-1.6 bar. When a pressure of 3 bar is exceeded a valve opens on each telescoping nozzle and a precise quantity of washing water is sprayed onto the headlamp lenses.

Eddy chambers are attached to the tips of the telescopic nozzles which control the spray from the water jets even at high vehicle speeds. Following the cleaning process the telescopes are retracted to the initial position by return springs.