Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2012A8 QUATTRO SEDAN (4H2) V8-4.2L (CDRA)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGDESCRIPTION AND OPERATIONAIR ROUTING AND AIR DISTRIBUTION
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)
Air Routing and Air Distribution
2012 Audi A8 Quattro Sedan (4H2) V8-4.2L (CDRA)SECTION Air Routing and Air Distribution
Air Routing and Air Distribution
• For component locations of the individual components, refer to => [ A/C System Control and Regulation Components Inside Passenger Compartment ] A/C System Control and Regulation Components Inside Passenger Compartment and => [ A/C Unit and Front Air Intake Housing Components ] A/C Unit and Front Air Intake Housing Components,=> [ Components of Rear A/C Unit Overview ] Components of Rear A/C Unit Overview and => [ Components of Rear Air Distributor Housing ] Components of Rear Air Distributor Housing.
• The ventilation of the passenger compartment occurs via two air extraction outlets (in luggage compartment right and left near the bumper), refer to => [ Passenger Compartment Forced Air Extraction, Checking ] Testing and Inspection.
• Air routing and air distribution in the passenger compartment in vehicles with a rear A/C system and a rear air distributor housing are identical.
• Refer to => [ Air Routing and Air Distribution In Front Passenger Compartment ] Air Routing and Air Distribution In Front Passenger Compartment
• Refer to => [ Air Intake Opening and Air Outlet Openings In Front A/C Unit ] Air Intake Opening and Air Outlet Openings In Front A/C Unit
• Refer to => [ Air Ducts and Vents In Rear Passenger Compartment ] Air Ducts and Vents In Rear Passenger Compartment
• Refer to => [ Air Duct In Rear Air Distributor Housing ] Air Duct In Rear Air Distributor Housing
• Refer to => [ Air Duct In Rear Heating and A/C Unit ] Air Duct In Rear Heating and A/C Unit
• Refer to => [ Air Ducts and Vents In Rear Passenger Compartment ] Air Ducts and Vents In Rear Passenger Compartment
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.