Heater Components
Heater Components
Observe notes for control and regulation of components in heater. Refer to=> [ Heater Activation and Control Components ] Heater Activation and Control Components
• The air duct in the heater and in the vehicle is the same as on vehicles with A/C system. Refer to=> [ Air Guide In Evaporator Housing ] Air Guide In Evaporator Housing and => [ Air Guide In Air Distribution Housing ] Air Guide In Air Distribution Housing.
• The heater should be removed and installed the same way as the A/C unit. Refer to=> [ A/C Unit ] Removal and Replacement.
1 Heater With Attachments
• Heater, removing and installing, refer to=> [ A/C Unit ] Removal and Replacement.
• The heater should be removed in the same way as the A/C unit. Naturally, the items that affect components that are only present on the A/C system are omitted.
• Heater, disassembling and assembling, refer to=> [ Heater ] Heater.
2 Defroster Door Motor (V107)
• With Defroster Door Motor Position Sensor (G135).
• Lever color identification: blue.
• Removing and installing, refer to => [ Defroster Door Motor (V107) ] Defroster Door Motor (V107).
• This motor is fastened on the right on air distributor housing in vehicles with right-side steering.
3 Central Air Door Motor (V70)
• With Central Door Motor Position Sensor (G112).
• Removing and installing, refer to=> [ Central Air Door Motor (V70)/(V145) ] Central Air Door Motor (V70)/(V145).
4 Auxiliary Air Heater Heating Element (Z35)
• Only intended for vehicles with Diesel engine.
5 Heat Exchanger For Heater Unit
• Removing and installing, refer to=> [ Heater Core ] Service and Repair.
6 Left Temperature Door Motor (V158)
• With Left Temperature Door Potentiometer/Actuator (G220).
• Lever color identification: white.
• Removing and installing, refer to => [ Left Temperature Door Motor (V158) ] Left Temperature Door Motor (V158).
• On the Audi TT without A/C (heating only), only one temperature door motor is installed. Both temperature doors for the left and right sides are connected via a shaft and moved together by the Left Temperature door Motor (V158).
• Vehicles without A/C do not have a temperature sensor. The outflow temperature is not controlled. The Left Temperature Door Motor is placed in a position calculated according to the temperature setting and the programmed motor stop values by the Climatronic control module (J255).
7 Back Pressure Door Motor (V71)
• With Back Pressure Door Motor Position Sensor (G113).
• Removing and installing, refer to => [ Air Flow Door Motor (V71), Function ] Air Flow Door Motor (V71), Function.
8 Control motor Door Motor (V113)
• With Recirculation Door Motor Position Sensor (G143).
• Removing and installing, refer to => [ Recirculation Door Motor (V113) ] Recirculation Door Motor (V113).
9 Intake Housing With Recirculating Air and Air Flow/Fresh Air Door
• Removing and installing, refer to => [ Air Intake Housing with Recirculating and Air Flow/Fresh Air Door ] Air Intake Housing With Recirculating and Air Flow/Fresh Air Door.
10 Fresh Air Blower Control Module (J126) and Fresh Air Blower (V2)
• Removing and installing, refer to => [ Fresh Air Blower Control Module (J126) and Fresh Air Blower (V2) ] Description and Operation.
• Different versions. At the start of production, a Fresh Air Blower on which the Fresh Air Blower Control Module is cast with the blower (V2) (cannot be replaced individually) was installed. In model year 2007, Fresh Air Blower Control Module and Fresh Air Blower that are bolted together (each can be replaced separately) will be introduced as a running change. Refer to => [ Fresh Air Blower Control Module (J126) and Fresh Air Blower (V2) ] Description and Operation and Electronic Parts Catalog (ETKA).
• The Fresh Air Blower Control Module (J126) is installed in the Fresh Air Blower (V2). Depending on the version, both of these components can be either replaced separately or only together.
• Checking, refer to Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.
11 Dust and Pollen Filter
• Removing and installing, refer to => [ Dust and Pollen Filter ] Service and Repair.
• Follow the replacement intervals.
• Vehicles without A/C (with heating only) have dust and pollen filter without an activated charcoal insert. Refer to Electronic Parts Catalog (ETKA) and => [ Dust and Pollen Filter with Activated Charcoal Insert ] Description and Operation.
12 Coolant Pipes To Heater Core
13 Grommet
• For sealing any holes in the refrigerant lines through the plenum chamber bulkhead to the engine compartment.