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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 Central locking

General information WARNING If you leave the vehicle, switch the ignition off and take the key with you. This applies particularly when children remain in the vehicle. Otherwise, children could start the vehicle or operate electrical equipment (such as power windows), which increases the risk

 Windshield Defogger

Windshield Defogger The Windshield Defogger Control Module -J505- is activated by the Comfort System Central Control Module -J393- at the request of the Front A/C Display Control Head -E87-. This request is sent via the data bus to the Comfort System Central Control Module -J393-. The Comfort

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