What are the functions of each button in a Mercedes-Benz?

[LaLaila]

Mercedes-Benz vehicles have a row of parallel buttons from left to right with the following functions: 1. Left air conditioning switch (automatic climate control). 2. Temperature adjustment. 3. Manual left fan speed adjustment. 4. Front window defogging. 5. Air recirculation control. 6. Air conditioning off. 7. Rear window defogging. 8. Right fan speed adjustment. 9. Right temperature adjustment. 10. Right air conditioning auto switch. Here is additional information: 1. Unlock button. Simultaneously press the "unlock button" and "lock button" on the key fob for five seconds until the red light on the key flashes twice consecutively. At this point, pressing the unlock button will only unlock the driver's door, and pressing it again will unlock all doors. 2. Recirculation button. When encountering certain road conditions, simply press and hold the recirculation button. This will activate the vehicle's air recirculation system and automatically close all windows.