Control Assembly: Description and Operation

A/C Control Head -E87-, Function







1. Windshield defrost button
2. Blower speed display
- In automatic operation -8-, a mid-range is displayed independent of actual blower speed.
3. Ambient (outside) temperature display
- Display will not change when road speed is below 15 km/h (9.5 mph) and coolant temperature is above 70 degrees C (158 degrees F). Under these conditions the actual measured value is not shown because at low road speed the radiant heat from the vehicle engine will cause a false reading.
4. Windshield defrost display
5. Air recirculation display
6. Air distribution display
- Function "air flow to footwell" is displayed or goes out when pressing button -14-.
- Function "air flow to upper body" is displayed or goes out when pressing button -15-.
7. Selected temperature display
- To change from degrees Celsius to Fahrenheit and vise versa:
- Press and hold button -11- and press button -9-.
- Selected temperature scale appears in display.
8. Operating mode display
"AUTO": Automatic mode
- In automatic mode the Climatronic maintains the selected inside temperature automatically. With this setting, the air outlet air temperature, the blower speed and the air distribution are controlled automatically.
"ECON": A/C system off
- In ECON mode only the compressor is switched off. Heating and air distribution continue to be controlled automatically.
"OFF": Complete system is switched off
- Switch off with button -17-.
- In this mode, all flaps remain in the last set position before switching off. (Setting should only be used in case of a malfunction).
9. Automatic operation button
10. Instrument panel interior temperature sensor -G56- and interior temperature sensor fan -V42-
- Installation position for right-hand drive vehicles.
11. "ECON"button
- In ECON mode only the compressor is switched off. The heater and air distribution continues to be controlled automatically.
12. "Warmer" button
13. "Colder" button
14. "Air flow to footwell" button
15. "Air flow to upper body" button
16. "Increase blower speed" button
17. "Decrease blower speed" button
- To switch off A/C system press and hold button until "OFF" appears in display.
- In this mode, all flaps remain in the same position before switching off. (Setting should only be used in case of a malfunction)
18. Recirculating air button
19. Instrument panel interior temperature sensor -G56- and interior temperature sensor fan -V42-
- Installation position for left-hand drive vehicles.