mercedes question
 

hi... i have a question on my 93 300se mercedes when i turn the heat control dial all the way up in red till hear click whats that setting is that max heat or is it floor heat or what thanks for your help.

Max heat. The floor heat is set by the buttons with the black arrows, if the arrow is facing down it is floor heat.

mercedes benz question
 

ok.. o yea i finally fix the duno valve i taken it apart change the rubbers and its good to go. the problem was when it ran hot one day somehow it melted the plastic bowl a little and the rubbers with the bullet thing got stuck close thanks for you help with that problem.