I have a question about the wipers/wash system in the multipla. My is a 2001 elx jtd model and when i want to wash the back window i push the lever the water comes out and the wiper comes on automatically. To wash front windscreen i pull the lever water comes out and thats it! I have to manually select the wipers to come on to finish the job...now im wondering is this in every multipla or there is something not right in my?? Thanks