Mercedes-Benz 350 SDL TURBO 1991 Owner's Manual page 26

24
^ D efrost
T he m axim um am o u n t of heated air is directed to the
w indsh ie ld and ad ju sta ble air ou tlets (9) in de pen de nt of
the po sitio ns o f the tem p e ra tu re se le cto r w h ee l and fan
control buttons.
oft
a
T he fresh air su p p ly to the ca r interior is shut off. W hile
driving, use this settin g only tem porarily.