Audi Q7 Owners & Service Manuals

Audi Q7: A/C System, General Information

Audi Q7 (4M) 2016-2026 Workshop Manual / Heating, Ventilation & Air Conditioning / Refrigerant R134a Servicing / 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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 Humidity Sensor in Fresh Air Intake Duct -G657-/ Air Quality Sensor -G238-, Removing and Installing

Air Quality Sensor -G238- with the Humidity Sensor In Fresh Air Intake Duct -G657-, Removing and Installing   Note There are different versions of the Air Quality Sensor -G238-/ Humidity Sensor in Fresh Air Intake Duct -G657--A-. Therefore, ensure the correct allocation. Refer to the Part

 Tires, Changing

The valve insert must be replaced with every tire change. Metal valve and wheel electronics can be reused. - Let air out of tire by removing the valve insert.   Note Be careful not to scratch off the glued- on wheel trim on these rims. The surface of the wheel trim is very sensitive.

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