Air Duct In Rear Heating and A/C Unit
Air Duct In Rear Heating and A/C Unit
• The rear A/C unit and the rear A/C display control head (E265) are optional equipment.
• The temperature of the air coming out of the rear vents is regulated by the rear A/C display control head via various settings and measured values. Check using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
• The various doors in the rear A/C unit vents are activated via control motors activated by the rear A/C display control head. Refer to => [ Components of Rear A/C Unit Overview ] Components of Rear A/C Unit Overview and the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
• Incorporation of rear heating & A/C unit into cooling- and refrigerant circuit, refer to => [ Incorporation Of Rear Heating & A/C Unit Into Cooling and Refrigerant Circuit ] Incorporation Of Rear Heating & A/C Unit Into Cooling And Refrigerant Circuit.
1 Air Inlet From The Front A/C Unit To The Rear A/C Unit (Fresh Air Mode)
2 Air Inlet From The Area Under The Center Console (Recirculation Mode)
3 Rear Fresh Air Blower (V80)
• Removal and installation, refer to => [ Rear Fresh Air Blower (V80) ] Description and Operation.
• Check the function using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
4 Rear A/C Unit
• Refer to => [ Components of Rear A/C Unit Overview ] Components of Rear A/C Unit Overview.
5 Air Outlet To The Footwell Vent Under The Right Seat (Front Passenger Seat)
6 Air Outlet To The Vent In The Right B-Pillar
7 Air Outlet To The Footwell Vent Under The Left Seat (Driver Seat)
8 Air Outlet To The Vent In The Left B-Pillar
9 Air Outlet To The Vent In The Right Center Console
10 Air Outlet To The Vent In The Left Center Console
11 Heater Core In Rear Heating & A/C Unit
• Removal and installation, refer to => [ Rear Heater Core ] Rear Heater Core.
12 Evaporator In Rear Heating & A/C Unit
• Remove and install (only possible with the rear A/C unit removed), refer to => [ Rear Evaporator Replacement ] Rear Evaporator Replacement.
13 Upper Temperature Door
• The temperature door is shown in the heat position.
• For separate regulation of the temperature of the air from the left and right vents, a temperature door is installed on the left and on the right side.
• The upper temperature door and lower temperature door of one side are each operated by one control motor. They are connected by a cam plate and an actuating arm, refer to => [ Components of Rear A/C Unit Overview ] Components of Rear A/C Unit Overview.
14 Lower Temperature Door
• The temperature door is shown in the heat position.
• For separate regulation of the temperature of the air from the left and right vents, two temperature doors are installed on the left and on the right side.
• The upper temperature door and lower temperature door of one side are each operated by one control motor. They are connected by a cam plate and an actuating arm, refer to => [ Components of Rear A/C Unit Overview ] Components of Rear A/C Unit Overview.
15 Air Outlet From The Evaporator
• To the heater core in this case since the temperature doors are shown in the heat position.
16 Condensation Water Drain Under The Evaporator
17 Air Outlet From The Rear Fresh Air Blower (V80) Into The Evaporator
18 Condensation Water Drain Under The Rear Fresh Air Blower (V80)
19 Air Inlet Into The Rear Fresh Air Blower (V80)
• Depending on the position of the recirculation doors from the front A/C unit or from the area under the center console.
20 Recirculation Doors In The Rear A/C Unit
• In this figure both recirculation doors are shown in the air intake from the front A/C unit position.
• Both recirculation doors are controlled by the rear recirculation door motor (V421) which is activated by the rear A/C display control head.
• When the recirculation doors are open, the air from the rear fresh air blower (V80) is not drawn in from the front A/C unit but from under the center console.