Comfort A/C Unit
Comfort A/C Unit
• Depending on the production date, there are different versions of the levers and connections on the A/C unit. Refer to => [ Air Conditioner, Levers and Connecting Elements ] Air Conditioner, Levers and Connecting Elements and the Parts Catalog.
- Remove the A/C unit. Refer to => [ A/C Unit ] A/C Unit.
1 Bolt
2 Bracket for Coolant Pipes
3 Evaporator Housing
• Disassembling and assembling, refer to => [ Evaporator Housing ] Evaporator Housing.
• There are different versions based on the manufacturing date and on the version of the vehicle. Refer to => [ Evaporator Housing ] Evaporator Housing and to the Parts Catalog.
• Evaporator housing, removing and installing, refer to => [ Evaporator Housing ] Evaporator Housing.
4 Coolant Pipe
• Removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings.
• For the coolant supply from the engine.
5 Coolant Pipe
• Removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings.
• For coolant return to engine.
6 O-Ring
• Replacing
• Coat lightly with coolant before installing. Refer to => [ Heater Core/Housings ] Heater Core/Housings.
7 Clamp
• These clamps are installed by the manufacturer; they hold the coolant pipes in the heater core installed by the manufacturer, item 8 => [ (Item 8) Heater Core for the Heater ] Basis A/C Unit.
8 Heater Core for the Heater
• This version is installed by the manufacturer.
• Removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings.
9 Coolant Pipe Brackets Inside Replacement Heater Core
• Included with the replacement heater core. Refer to the Parts Catalog.
• Removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings.
10 Washer
• Included with the replacement heater core. Refer to the Parts Catalog.
11 Bolt
• Tightening specification 2.5 Nm
• Included with the replacement heater core. Refer to the Parts Catalog.
12 Replacement Parts - Heater Core
• With the A/C unit installed, removing and installing, refer to => [ Heater Core/Housings ] Heater Core/Housings.
• This version is a replacement part. Refer to Electronic Parts Catalog (ETKA).
• Included in the replacement heater core kit, item 6 => [ (Item 6) O-Ring ] and item 9 => [ (Item 9) Coolant Pipe Brackets Inside Replacement Heater Core ] through item 12 => [ (Item 12) Replacement Parts - Heater Core ]. Refer to Electronic Parts Catalog (ETKA).
• Cover the heater core according to the version of the A/C system installed in the vehicle with foam seals. Refer to => [ Heater Core/Housings ] Heater Core/Housings.
13 Honey Comb
• On vehicles without an auxiliary heater heating element (Z35).
• With the A/C unit installed, removing and installing, refer to => [ Auxiliary Air Heater Heating Element (Z35)/Honey Comb ] Service and Repair.
• Cover the honey comb with foam seals according to the version of the A/C system. Refer to => [ Auxiliary Air Heater Heating Element (Z35)/Honey Comb ] Service and Repair.
14 Auxiliary Air Heater Heating Element (Z35)
• On specific gasoline engines. Refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Testing and Inspection.
• Checking function, refer to => [ Auxiliary Heater Heating Element (Z35), Testing ] Testing and Inspection.
• With the A/C unit installed, removing and installing, refer to => [ Auxiliary Air Heater Heating Element (Z35)/Honey Comb ] Service and Repair.
• Cover the auxiliary air heater heating element with foam seals according to the version of the A/C system. Refer to => [ Auxiliary Air Heater Heating Element (Z35)/Honey Comb ] Service and Repair.
• In MY 2009, as a running change, a new version of the auxiliary air 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).
15 Bracket
16 Mounting Plate with the Left Temperature Door Motor (V158)
• Removing and installing, disassembling and assembling, refer to => [ Left Temperature Door Motor (V158) ] Left Temperature Door Motor (V158).
17 Defroster Door Motor (V107)
• Removing and installing, refer to => [ Defroster Door Motor (V107) ] Defroster Door Motor (V107).
18 Left Retaining Plate Together With the Left Footwell Door Motor (V108) and the Left Center Vent Motor (V110)
• With curved washers, relay levers and connecting rods.
• Left Footwell Door Motor, 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 Center Vent Motor, removing and installing, refer to => [ Left Center Vent Motor (V110) ] Left Center Vent Motor (V110).
• Retaining plate with Left Footwell Door Motor 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).
• Retaining plate with Left Footwell Door Motor and Left Center Vent Motor, disassembling and assembling, 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).
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings as well as to the pins on the door levers. Refer to Electronic Parts Catalog (ETKA).
19 Left Heater Core Housing (With The Temperature Doors)
• The activation of the temperature doors and with it the left heater core housing is different between vehicles equipped with "Comfort" and "Basis" A/C systems. On the "Comfort" A/C system, the temperature doors (for the left front and the rear) are actuated by various control motors. Refer to => [ Air Distributor Housing Doors and Partitions ] Air Distributor Housing Doors and Partitions and the Electronic Parts Catalog (ETKA).
• Different versions (with one or two lower mounting points. Refer to => [ Left Heater Core Housing with Temperature Doors ] Left Heater Core Housing With Temperature Doors and the Parts Catalog.
• With the A/C unit installed, removing and installing, refer to => [ Left Heater Core Housing with Temperature Doors ] Left Heater Core Housing With Temperature Doors.
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings, the toothed segment as well as to the pins on the door levers. Refer to Electronic Parts Catalog (ETKA).
20 Toothed Segment
21 Mounting Plate with the Rear Temperature Door Motor (V137)
• Removing and installing the mounting plate with the Rear Temperature door Motor; remove the temperature regulator door motor from the mounting plate, refer to => [ Temperature Regulator Door Motor (V68) and Rear Temperature Door Motor (V137) ] Temperature Regulator Door Motor (V68) and Rear Temperature Door Motor (V137).
• The actuation of the left and right temperature doors differs between vehicles equipped with the "Basis" A/C system and the "Comfort" A/C system. On the "Comfort" A/C system, the rear left temperature doors are actuated by the Rear Temperature door Motor by a toothed segment, item 20 => [ (Item 20) Toothed Segment ]. The rear right temperature door is actuated by the Rear Temperature door Motor via the connector rod, item 24 => [ (Item 24) Connector Rod For The Rear Temperature Doors ] which also has a toothed segment. Refer to => [ Air Distributor Housing Doors and Partitions ] Air Distributor Housing Doors and Partitions.
• Apply a small amount of grease (G 000 150) to the shaft bearings, the toothed segments as well as to the pins on the flap levers. Refer to the Parts Catalog.
22 Connecting Rod To The Defroster Door
23 Actuating Arm to the Defroster door motor (V107)
24 Connector Rod For The Rear Temperature Doors
25 Air Distribution Housing, "Comfort" A/C System
• Do not disassemble further
• Different versions between vehicles equipped with the "Comfort" A/C system and the "Basis" A/C system. Refer to Electronic Parts Catalog (ETKA).
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings, the toothed segment as well as to the pins on the door levers. Refer to Electronic Parts Catalog (ETKA).
• On the "Comfort" A/C system, there is a separator wall installed (to partition the left and right as well as front and rear). In addition, each left and right vent for indirect ventilation and the air guide to the rear left and right vent in the rear center console has a door installed. The different doors (for example, for the instrument panel vents and the left and right footwell vents) are each actuated by one control motor. The doors for the center vents in the instrument panel and the air guide to the vents in the left and right rear center console are connected to each other by a connector rod and are actuated by the Left Center Vent Motor (V110) and the Right Center Vent Motor (V111).
• Beginning 08.2007, as a running change, an A/C unit with an air distribution housing with optimized air flow will be introduced (versions "1" and "2"). Refer to => [ Comfort A/C Unit and Air Distribution Housing ] Comfort A/C Unit and Air Distribution Housing.
26 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.
27 Wiring Harness, "Comfort" A/C system
• Different versions. Refer to Electronic Parts Catalog (ETKA).
• Mark the allocation before disconnecting the connectors (danger of interchange, connectors of same shape for different motors and temperature sensor).
• Attach the wiring harness to the attaching point on the housing or attach it to the mounts with cable ties so that it cannot come into contact with moving parts, item 29 => [ (Item 29) Cable Ties ].
28 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.
29 Cable Ties
30 Right Radiator Housing (With The Temperature Doors)
• The activation of the temperature doors and with it the right radiator housing is different between vehicles equipped with "Comfort" and "Basis" A/C systems. On the "Comfort" A/C system, the temperature doors (for the front right and the rear right) are actuated by various control motors. Refer to => [ Air Distributor Housing Doors and Partitions ] Air Distributor Housing Doors and Partitions and the Parts Catalog.
• Different versions (with one or two lower mounting points. Refer to => [ Left Heater Core Housing with Temperature Doors ] Left Heater Core Housing With Temperature Doors and the Parts Catalog).
• With the A/C unit installed, removing and installing, refer to => [ Right Heater Core Housing, Motor Mounting Plate Removed ] Right Heater Core Housing, Motor Mounting Plate Removed or => [ Right Heater Core Housing and Right Motor Mounting Plate ] Right Heater Core Housing and Right Motor Mounting Plate.
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings, the toothed segment as well as to the pins on the door levers. Refer to Electronic Parts Catalog (ETKA).
31 Right Retaining Plate Together With the Right Footwell Door Motor (V109) and the Right Center Vent Motor (V111)
• With curved washers, relay levers and connecting rods.
• Right Footwell Door Motor, removing and installing, refer to => [ Right Footwell Door Motor (V109) ] Right Footwell Door Motor (V109).
• Right Center Vent Motor, removing and installing, refer to=> [ Right Center Vent Motor (V111) ] Right Center Vent Motor (V111).
• Retaining plate with Right Footwell Door Motor 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).
• Retaining plate with Right Footwell Door Motor and Right Center Vent Motor, disassembling and assembling, 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).
• Apply a small amount of grease (G 000 150) to the cam plate guides, the shaft bearings as well as to the pins on the door levers. Refer to Electronic Parts Catalog (ETKA).
32 Mounting Plate With the Right Temperature Door Motor (V159)
• Removing and installing, disassembling and assembling, refer to => [ Right Temperature Door Motor (V159) ] Right Temperature Door Motor (V159).