Audi Q3: Heating, Ventilation

Component Location Overview - Heating

Component Location Overview - Components Outside of Passenger Compartment

  Note

• At the start of production, only one Air Conditioning (A/C) system was offered for the Audi Q3.
• From MY 2014 as a running change, a heater without an A/C system is also offered for certain vehicles.
• The fresh air intake in the plenum chamber is the same as on a vehicle with a manual climate control system. Refer to → Chapter "Component Location Overview - Components Outside of Passenger Compartment, Front Component Group 2".

All necessary information for servicing the heater can be found in the → Rep. Gr. 87 "Air Conditioning". Observe the following

• The heater, related actuators and air guides resembles those on a vehicle with a manual climate control system. Refer to → Chapter "Component Location Overview - Components Outside of Passenger Compartment", → Chapter "Overview - Heater and A/C Unit Attachments and Air Intake Housing" and the Parts Catalog. However, the connections for the missing refrigerant lines on the expansion valve are sealed with a closure cap.

Component Location Overview - Components Inside Front Passenger Compartment

  Note

• At the start of production, only one Air Conditioning (A/C) system was offered for the Audi Q3.
• From MY 2014 as a running change, a heater without an A/C system is also offered for certain vehicles.

All necessary information for servicing the heater can be found in the → Rep. Gr. 87 "Air Conditioning". Observe the following

• The heater, related actuators and air guides resembles those on a vehicle with a manual climate control system. Refer to → Chapter "Overview - Heater and A/C Unit Attachments and Air Intake Housing" and the Parts Catalog. However, the connections for the missing refrigerant lines on the expansion valve are sealed with a closure cap.
• The removal of the heater is fundamentally the same as the removal of the A/C unit on a vehicle with a manual climate control system. Only the refrigerant lines to the expansion valve are missing. Refer to → Chapter "Heater and A/C Unit, Removing and Installing", → Chapter "Component Location Overview - Components Inside Front Passenger Compartment", → Chapter "Overview - Front Actuators" and the Parts Catalog.
• The Heater Control Module -J65- largely corresponds to the A/C Control Module -J301-, however the A/C button and the functions necessary for the activation of the A/C system components are missing. Refer to → Chapter "Overview - Display and Control Head, Manual Climate Control System (Heater without A/C System)", Parts Catalog and Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

Heater

Overview - Heater

The heater, related actuators and air guides resembles those on a vehicle with a manual climate control system. Refer to → Chapter "Front Heater and A/C Unit", → Chapter "Overview - Heater and A/C Unit Attachments and Air Intake Housing" and the Parts Catalog. However, the connections for the missing refrigerant lines on the expansion valve are sealed with a closure cap.

The removal of the heater is fundamentally the same as the removal of the Air Conditioning (A/C) unit on a vehicle with a manual climate control system. Only the refrigerant lines to the expansion valve are missing. Refer to → Chapter "Heater and A/C Unit, Removing and Installing".

  Note

• The condensation water drain does not function due to the missing A/C system, if the condensation water drain is not installed correctly moisture can get into the vehicle or noises can occur when the operating the heater.
• Depending on the vehicle version there can be no condensation water drain installed, in this case the opening in the underbody and the connection on the heater is closed with plugs. Refer to the Parts Catalog.

Fresh Air Blower -V2-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Fresh Air Blower -V2-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Fresh Air Blower Series Resistor with Fuse -N24-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Fresh Air Blower Series Resistor with Fuse -N24-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Auxiliary Heater Heating Element -Z35-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Auxiliary Heater Heating Element -Z35-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Temperature Regulator Door Motor -V68- with Position Sensor -G92-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Temperature Regulator Door Motor -V68-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Recirculation Door Motor -V113-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Recirculation Door Motor -V113-, Removing and Installing, Manual Climate Control System (or Heater without A/C System)".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Central Air Door Motor -V70-, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Central Air Door Motor -V70-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Dust and Pollen Filter, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Dust and Pollen Filter, Removing and Installing".

  Note

Depending on the equipment level, there are different filters. Refer to → Chapter "Dust and Pollen Filter, Removing and Installing" and Parts Catalog.

Heater Core, Removing and Installing

The removal and installation is identical to vehicles with a manual climate control system. Refer to → Chapter "Heater Core, Removing and Installing".

Heater, Removing and Installing

  Note

The heater design is the same as the heater and A/C unit design on vehicles with a manual climate control system. The refrigerant lines to the expansion valve are not present.

The removal of the heater is fundamentally the same as the removal of the A/C unit on a vehicle with a manual climate control system. Only the refrigerant lines to the expansion valve are missing. Refer to → Chapter "Heater and A/C Unit, Removing and Installing".

  Note

• The condensation water drain does not function due to the missing A/C system, if the condensation water drain is not installed correctly moisture can get into the vehicle or noises can occur when the operating the heater.
• Depending on the vehicle version there can be no condensation water drain installed, in this case the opening in the underbody and the connection on the heater is closed with plugs. Refer to the Parts Catalog.

Heater, Disassembling and Assembling

Disassembling and assembling the heater is identical to the heater and Air Conditioning (A/C) unit in a manually regulated A/C system. Refer to → Chapter "Front Heater and A/C Unit".

  Note

• The heater design is the same as the design for the heater and A/C unit of a manual climate control system. Refer to → Chapter "Front Heater and A/C Unit".
• The condensation water drain does not function due to the missing A/C system, if the condensation water drain is not installed correctly moisture can get into the vehicle or noises can occur when the operating the heater.
• Depending on the vehicle version there can be no condensation water drain installed, in this case the opening in the underbody and the connection on the heater is closed with plugs. Refer to the Parts Catalog.

Air Routing

Front Vents, Removing and Installing

The removal and installation is identical to vehicles with an A/C system. To remove and install, refer to → Body Interior; Rep. Gr.70; Instrument Panel; Overview - Instrument Panel Components.

Fresh Air Intake, Removing and Installing

The removal and installation is identical to vehicles with an A/C system. Refer to → Chapter "Fresh Air Intake Cover, Removing and Installing" and → Chapter "Fresh Air Intake, Removing and Installing".

Passenger Compartment Forced Air Extraction, Checking

The removal and installation is identical to vehicles with an A/C system. Refer to → Chapter "Passenger Compartment Forced Air Extraction, Checking".

Passenger Compartment Forced Air Extraction, Removing and Installing

The removal and installation is identical to vehicles with an A/C system. Refer to → Chapter "Passenger Compartment Forced Air Extraction, Removing and Installing".

Plenum Chamber Water Drain, Checking

The test is identical to a vehicle with an A/C system. Refer to → Chapter "Plenum Chamber Water Drain, Cleaning" and → Chapter "Plenum Chamber Water Drain, Checking".

Display and Control Head

Component Location Overview - Heater Control Module -J65- Display and Control Head

The Heater Control Module -J65- largely corresponds to the A/C Control Module -J301-, however the A/C button and the functions necessary for the activation of the A/C system components are missing. Refer to → Chapter "Overview - Display and Control Head, Manual Climate Control System (Heater without A/C System)" and the Parts Catalog.

Heater Control Module -J65- Display and Control Head, Removing and Installing

The removal and installation is identical to the removal and installation for the A/C Control Module -J301- on a vehicle with a manual climate control system. Refer to → Chapter "Display and Control Head, Removing and Installing, A/C Control Module -J301- (Heater Control Module -J65-)".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Additional Components for Control and Regulation

Outside Air Temperature Sensor -G17-, Removing and Installing

The removal and installation is identical to vehicles with an A/C system. Refer to → Chapter "Outside Air Temperature Sensor -G17-, Removing and Installing".

  Note

To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Evaporator Vent Temperature Sensor -G263-, Removing and Installing

The removal and installation is identical to vehicles with an A/C system. Refer to → Chapter "Evaporator Vent Temperature Sensor -G263-, Removing and Installing".

  Note

• The Evaporator Vent Temperature Sensor -G263- does not have a function on vehicles without an A/C system (the evaporator is installed, but has no function). Depending on the Heater Control Module -J65- version, its measured value can however be evaluated by this one.
• To check the function, refer to Vehicle Diagnostic Tester in the "Guided Fault Finding" function and → Wiring diagrams, Troubleshooting & Component locations.

Special Tools

Special tools and workshop equipment required

• Vehicle Diagnostic Tester

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