My recently acquired 320 2002 model has a button and I dont know what it does. I've asked the question before but not got a proper answer so am asking again.
the button is the air recirc button. It has a sideways figure of 8 on it. The left side has an A in the middle of the left hand side of the 8. Press it once and a green light comes on on the left side. Press it again and the light switches to the right side. Press again and it goes off. I'de like to know what the 3 stages are.