Audi A4 Owners & Service Manuals

Audi A4: General, Technical data

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 Safety Precautions

Safety Precautions when Working on Vehicles with Start/Stop System There is a risk of injury due to the engine starting unexpectedly. The engine can start unexpectedly on vehicles with an activated

 Additional Safety Precautions for Airbag Control Module

  WARNING After every removal and installation of the Airbag Control Module -J234-, the "inertial sensor basic setting" must be performed. If the Airbag Control Module -J234- is replaced w

 Restraint System Pyrotechnic, Electric and Mechanical Components, Replacing After a Collision

Special tools and workshop equipment required Vehicle Diagnostic Tester The airbag control module must be replaced If the display "Control module faulty" appears after checking the DTC memory A

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 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

 Refrigerant Circuit, Charging with Service Station

  Note The entire refrigerant charge can be added to either the high or low pressure side. Refer to → Chapter "Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils". The work procedure is always to be performed as described in the operating instructions for

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