Hi,everyone, </P>


My MB is 87 300E. The climate control system can't be stoped.</P>


I pressed the "O" , the climate system fan just stop for couple sec. then it runs again. If I hold the button "O", the system can be stoped.</P>


But I can't press the button for the whole trip.</P>


Can anyone here help me out those questions?</P>


1 what singal the switch send out? cut off the circuit off or send out the "1" singal? </P>


2 Where is the control relay located?</P>


3 Does anyonehave this kind of experience?</P>


Thanks for any words here!</P>


All the best.</P>


Peter</P>