A/C Unit and Air Intake Housing Overview, Comfort A/C System
A/C Unit and Air Intake Housing Overview, Comfort A/C System
• From MY 12 (introduction depending on the version of the vehicle), a revised fresh air blower control module (J126) (and fresh air blower (V2) , Climatronic control module (J255) A/C control head, evaporator, expansion valves, motors and A/C are being used. Refer to the Parts Catalog and the Vehicle Diagnostic Tester in "Guided Fault Finding" function. Read all the information regarding these components. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
1 Air Intake Housing
• Removing and installing, refer to => [ A/C Unit Air Intake Housing ] A/C Unit Air Intake Housing.
• Disassembling and assembling, refer to => [ A/C Unit Air Intake Housing ] A/C Unit Air Intake Housing.
• There are different versions (with and without a connection for the glove compartment cooling).
• Connection for the glove compartment cooling on the air intake manifold, refer to => [ Glove Compartment Cooling to Air Intake Manifold Connection ] Glove Compartment Cooling to Air Intake Manifold Connection.
• From 01.2008, A/C units which have an additional connection for the glove compartment cooling are being installed. On vehicles without glove compartment cooling, this connection is sealed with a plug.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
2 A/C with Evaporator ("Comfort" A/C System)
• May only be removed when refrigerant circuit has been removed; bring vehicle to a workshop that has the necessary tools and in which the work can be performed accordingly by qualified personnel.
• Evaporator, removing and installing with A/C Unit installed , from Start of Production through MY 12, refer to => [ Evaporator, A/C Unit Installed ] Evaporator, A/C Unit Installed.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
• Evaporator and evaporator housing, removing and installing, refer to => [ Evaporator Housing ] Evaporator Housing.
• A/C unit with evaporator, removing and installing, refer to => [ A/C Unit ] A/C Unit.
• Heating and A/C unit, disassembling and assembling, refer to => [ A/C Unit ] A/C Unit.
• Clean air conditioning system evaporator with Ultrasound A/C Cleaner (VAS 6189A) => [ Evaporator Cleaning ] Service and Repair.
3 Recirculation Door Motor (V113)
• Removing and installing, refer to => [ Recirculation Door Motor (V113) ] Recirculation Door Motor (V113).
4 Airflow Door Motor (V71)
• Removing and installing, refer to => [ Air Flow Door Motor (V71) ] Air Flow Door Motor (V71).
5 Coolant Pipes To Heater Core
6 Expansion Valve
• Refrigerant lines, disconnecting and reconnecting, refer to => [ Refrigerant Circuit Components ] Refrigerant Circuit Components.
• Removing and installing, refer to => [ Expansion Valve ] Expansion Valve.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
7 Grommet
• For sealing the opening through the plenum chamber rear wall for the refrigerant lines.
8 Left Temperature Door Motor (V158)
• Removing and installing, refer to => [ Left Temperature Door Motor (V158) ] Left Temperature Door Motor (V158).
9 Cover For Refrigerant Pipes Leading To The Evaporator
• Removing and installing, refer to => [ Evaporator, A/C Unit Installed ] Evaporator, A/C Unit Installed.
10 Left Center Vent Motor (V110)
• Removing and installing, refer to => [ Left Center Vent Motor (V110) ] Left Center Vent Motor (V110).
• Left retaining plate with footwell door motor (V108) and left center vent motor, removing and installing, refer to => [ Left Retaining Plate with Left Footwell Door Motor (V108) and Left Center Vent Motor (V110) ] Left Retaining Plate With Left Footwell Door Motor (V108) and Left Center Vent Motor (V110).
• Left center vent motor, removing and installing, refer to => [ Left Center Vent Motor (V110) ] Left Center Vent Motor (V110).
11 Defroster Door Motor (V107)
• Removing and installing, refer to => [ Defroster Door Motor (V107) ] Defroster Door Motor (V107).
12 Left Footwell Door Motor (V108)
• Removing and installing, refer to => [ Footwell Door Motor (V261) and Left Footwell Door Motor (V108) ] Footwell Door Motor (V261) and Left Footwell Door Motor (V108).
• Left retaining plate with Footwell door motor and left center vent motor (V110) removing and installing, refer to => [ Left Retaining Plate with Left Footwell Door Motor (V108) and Left Center Vent Motor (V110) ] Left Retaining Plate With Left Footwell Door Motor (V108) and Left Center Vent Motor (V110).
13 Left Condensation Water Drain Connection, (Driver Side)
• Condensation water drain valve, checking, removing and installing, refer to => [ Condensation Water Drain Hose ] Condensation Water Drain Hose.
14 Rear Temperature Regulator Door Motor (V137)
• Removing and installing, refer to => [ Temperature Regulator Door Motor (V68) and Rear Temperature Door Motor (V137) ] Temperature Regulator Door Motor (V68) and Rear Temperature Door Motor (V137).
15 Left Footwell Vent Temperature Sensor (G261)
• Removing and installing, refer to => [ Footwell Vent Temperature Sensor (G192)/Left Footwell Vent Temperature Sensor (G261) ] Footwell Vent Temperature Sensor (G192)/Left Footwell Vent Temperature Sensor (G261).
• The left footwell vent temperature sensor is installed in the left footwell vent.
16 Connection to the A/C Control Head Climatronic Control Module (J255) on the A/C wiring harness.
17 Right Footwell Vent Temperature Sensor (G262)
• Removing and installing, refer to => [ Right Footwell Vent Temperature Sensor (G262) ] Right Footwell Vent Temperature Sensor (G262).
• The right footwell vent temperature sensor is installed in the right footwell vent.
18 Fresh Air Blower Control Module (J126)
• Removing and installing, refer to => [ Fresh Air Blower Control Module (J126) ] Fresh Air Blower Control Module (J126).
• Check using the Vehicle Diagnostic Tester in "Guided Fault Finding" function.
• Different versions. Refer to => [ Fresh Air Blower (V2) ] Service and Repair.
• As a running change in MY 10, gasoline engines that can run on bioethanol (Flex Fuel Vehicles) were introduced, which currently have an auxiliary heater heating element (Z35). Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
• Currently an auxiliary air heater heating element is installed for vehicles with a high voltage system (hybrid vehicles) and a gasoline engine => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
• The activation of the electric auxiliary heater (the auxiliary air heater heating element) occurs for vehicles with a gasoline engine from the Climatronic control module (J255) control head via the local Data bus (controlled using the same outlet and also using the fresh air blower control module (J126) ) on the auxiliary air heater control module (J604). Check the fresh air blower control module or the fresh air blower (V2) and also the auxiliary air heater control module when complaints arise for these vehicles. Refer to the Vehicle Diagnostic Tester in "Guided Fault Finding" function.
• Make sure the auxiliary air heater heating element is working. Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
19 Evaporator
• A/C unit with evaporator, removing and installing, refer to => [ A/C Unit ] A/C Unit.
• Evaporator, removing and installing with A/C Unit installed, from Start of Production through MY 12, refer to => [ Evaporator, A/C Unit Installed ] Evaporator, A/C Unit Installed.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
• Evaporator and evaporator housing, removing and installing, refer to => [ Evaporator Housing ] Evaporator Housing.
20 Right Condensation Water Drain Connection (Passenger Side)
• Condensation water drain valve, checking, removing and installing, refer to => [ Condensation Water Drain Hose ] Condensation Water Drain Hose.
21 Heater Core for Heater Unit
• Heater core with the A/C installed, removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings,.
22 Auxiliary Air Heater Heating Element (Z35) / Honey Comb
The auxiliary heater heating element is installed on vehicles with certain gasoline engines. Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
Vehicles with a gasoline engine, without auxiliary heater heating element have a honey comb installed in the as a place holder (this assures that current conditions in the A/C with and without auxiliary heater heating element are the same).
• Make sure the auxiliary heater heating element is working. Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
• Auxiliary heater heating element / honey comb with A/C system installed, removing and installing, refer to => [ Auxiliary Air Heater Heating Element (Z35)/Honey Comb ] Auxiliary Air Heater Heating Element (Z35)/Honey Comb.
• In MY 2009, as a running change, a new version of the auxiliary heater heating element is being installed (the heating element is a bit more narrow); be sure to use the correct version and note the allocation. Refer to Electronic Parts Catalog (ETKA).
• As a running change in MY 10, gasoline engines that can run on bioethanol (Flex Fuel Vehicles) were introduced, which currently have an auxiliary heater heating element. Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
• Currently an auxiliary air heater heating element is installed for vehicles with a high voltage system (hybrid vehicles) and a gasoline engine => [ Auxiliary Heater Heating Element (Z35), Testing ] Auxiliary Heater Heating Element (Z35), Testing.
23 Right Temperature Door Motor (V159)
• Removing and installing, refer to => [ Right Temperature Door Motor (V159) ] Right Temperature Door Motor (V159).
24 Right Center Vent Motor (V111)
• Removing and installing, refer to => [ Right Center Vent Motor (V111) ] Right Center Vent Motor (V111).
• Right footwell door motor retaining plate with the control motors and right center vent motor removing and installing, refer to => [ Right Retaining Plate with Right Footwell Door Motor (V109) and Right Center Vent Motor (V111) ] Right Retaining Plate With Right Footwell Door Motor (V109) and Right Center Vent Motor (V111).
25 Right Footwell Door Motor (V109)
• Removing and installing, refer to => [ Right Footwell Door Motor (V109) ] Right Footwell Door Motor (V109).
• Right footwell door motor retaining plate with the control motors and right center vent motor removing and installing, refer to => [ Right Retaining Plate with Right Footwell Door Motor (V109) and Right Center Vent Motor (V111) ] Right Retaining Plate With Right Footwell Door Motor (V109) and Right Center Vent Motor (V111).
26 Fresh Air Blower (V2)
• Removing and installing, refer to => [ Fresh Air Blower (V2) ] Service and Repair.
• Check using the Vehicle Diagnostic Tester in "Guided Fault Finding" function.
• Different versions. Refer to => [ Fresh Air Blower (V2) ] Service and Repair.
• From MY 12, a new version is being used. Read all the information regarding this component. Refer to => [ A/C Unit and Air Intake Housing Overview, Basis A/C System ] A/C Unit and Air Intake Housing Overview, Basis A/C System.
27 Dust and Pollen Filter
• Removing and installing, refer to => [ Dust and Pollen Filter ] Service and Repair.
• Follow the replacement intervals.
• Different versions with and without activated charcoal filter element. Refer to => [ Dust and Pollen Filter with Activated Charcoal Insert ] Description and Operation.
28 Evaporator Vent Temperature Sensor (G263)
• Removing and installing, refer to => [ Evaporator Vent Temperature Sensor (G263) ] Evaporator Vent Temperature Sensor (G263).