I have the rain sensor activated wipers. They seem very erratic with regards the amount of rain needed to activate them. Sometimes they work with a few drops, other times you need a garden hose to make them work.
Has anyone else experienced problems with them?

Could be all the rain in Europe overworking them!!

 

Do not have that problem with either my ML500 or my E Class. Both rain sensors work well and consistantly. Perhaps European rain water is different from that in the US!!

 

Thanks for the info, I have to go back to MB so will ask them to check them out.