i can see why the amazing german engineers installed wipers on the headlight,they only work at night while the lights are on and the wiper spray cleaner is used,it may have cleaned them off a bit from fog or dirt,but in my honest opinion,i think they are the most ridiculous thing the germans added to there cars,its a bit over the edge,in mny opinion,plus its more stuff to have to fix,right now the right motor on my 89 300ce is burnt out,sometimes the spray nozzles drip a bit,when snow and ice builds up there just plain useless,however the washer fluid is heated,and the lines appear to have a heated element in them.its also funny how the drivers door mirror is manual,and the pass is electric.