Most Mercedes from the mid 50s to the late 60s had a similar set of controls for the heater. There are four horizontal levers controlling the amount of heat and the direction of the air flow.
At least on the W111, the lever on the top left controls the amount of outside airflow. The top right controls the direction of the airflow. The two bottom levers control how much heat on each side is allowed in. There is no provision for A/C as this was not integrated into the controls until the mid 70s.
The levers were originally chrome, for […]
