Mercedes-Benz 260 E 124 1987 Owner's Manual page 27

0 Multi-Level ventilation - Heating
0 | Multi-Level
This setting is used for clearing a fogged windshield. As
soon as the windshield is clear, reset to 0
In the heating mode, warm air is supplied to the wind­
shield, foot area, and to outlets (8). Additionally, warm air
will be emitted periodically from outlets (6), depending on
the interior temperature.
In the cooling mode, cool air is supplied to the windshield,
foot area, and outlets (6) and (8).
or 0 .