Dial Position Explanation: Vent Types: Dash = Vents to left and right of steering wheel, vents at left and right of pass airbag, and vents above radio Windshield = One long full row of vents at base of windshield Floor = 2 round vents underneath steering wheel one for each foot, and 1 vent in passenger area Amount Vent Open: 0: Not open 1: Little open 2: More open 3: Full open Like a clock 12 - 3 Dash + 3 Windshield 01 - 3 Dash + 3 Windshield + 1 Floor 02 - 3 Dash + 3 Windshield + 2 Floor 03 - 3 Dash + 3 Windshield + 3 Floor 04 - 3 Dash + 2 Windshield + 3 Floor 05 - 3 Dash + 1 Windshield + 3 Floor 06 - 3 Dash + 3 Floor 07 - 3 Dash + 2 Floor 08 - 3 Dash + 1 Floor 09 - 3 Dash 10 - 3 Dash + 1 Windshield 11 - 3 Dash + 2 Windshield

1. You should fill the Bowden cables with lube like you suggested 2. You should lube the plastic dial with a grease. Both sides. You'll see the tracks. Don't use sloppy oil. 3. You should manually turn the knobs in the air box because a common issue is the windshield defroster flaps get stuck. Manual turning can sometimes reset them. 4. Be super duper careful with the ends of the Bowden cables because they can get crazy brittle 5. Once you've lubed it up connect the cables and rest the hvac unit near where it screws in and just practice gently rotating the knob in circles to make sure all your lube hits all the spots.

Agree. I’m not sure what the settings mean, and I don’t know the push in v push(out) does. I know one of them in interior recycled air, but the Mercedes code of the dashed v solid line doesn’t compute in my mind.

good video thank you, where are you located?

I wish there was a video explaining the settings of this knob. I just twist and twist until it finally does what I want. I have no idea how it’s supposed to work. In my defense, I only change it when going from AC to heat.