Audi Q7 Owners & Service Manuals

Audi Q7: A/C System, General Information

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 General Information

Introduction The purpose of this repair manual is to provide service advisors and technicians with the basic knowledge needed to ensure professional and competent procedures.   Note Only the c

 A/C Technology Basic Principles

Physical Principles The four known states of water also apply to air conditioning system refrigerants. 1 - Gaseous (invisible) 2 - Vapor 3 - Liquid 4 - Solid

 Refrigerant R134a

Refrigerant R134a Physical Data Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as ref

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 Parking Brake

Overview - Parking Brake   Note Due to a mechanical or electrical fault, it may be required to mechanically loosen the parking brake in order to move the vehicle. Refer to → Chapter "Parking Brake, Manually Loosening". 1 - Rear Brake Caliper 2 - Gasket Replace

 Seat Ventilation

Front Seat Ventilation Components that are involved in the activation of the front seat ventilation The Front A/C Display Control Head -E87- sends the request to switch on the seat ventilation (and seat heating) for the front seats to the respective control module via the data bus (the affected

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