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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 Coolant System/Coolant

Connection Diagram - Coolant Hoses Connection Diagram - Coolant Hoses, Vehicles without Parking Heater   Note Blue = large coolant circuit. Red = small coolant circuit. Orange = coolant circuit for the charge air cooler. Brown = heating circuit. Green = coolant circuit for the transmissi

 Cooling system

Coolant The engine cooling system is filled with a mixture of purified water and coolant additive at the factory. This coolant must not be not changed. The coolant level is monitored using the indicator light. However, you should occasionally check the coolant level. Messages The following messag

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