Audi A4 Owners & Service Manuals

Audi A4: A/C System, General Information



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 careful study

 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


 Rear Side Window, Removing and Installing

Undamaged Side Window, Removing, Sedan Special tools and workshop equipment required Wedge Set -T10383- Wedge 1 -T10383/1- Cutting Tool for Bonded Windows -VAS6452- Bonded Window Tool Kit - Pull Handle -VAG1351/1- Follow repair instructions. Refer to → Chapter "Repair Information". To co

 Refrigerant R134a Characteristics

Commercial Names and Designations Refrigerant R134a is currently available under the following trade names: H-FKW 134a SUVA 134a KLEA 134a   Note Different trade names may be used in other countries. Of the wide range of refrigerants available, this is the only one which may be used

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