Audi A4 2001 - Side Airbag Sensors and Control Unit

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• The refrigerant oils specifically developed for R134a and R12
refrigerant circuits are never to be mixed.
• Service stations which come in contact with the refrigerant are
only to be used for the intended refrigerant.
• Components of R134a refrigerant circuits can be identified by
their markings, green labels or design (such as different
threads) to prevent interchanging with components designed
for refrigerant R12.
• A label indicating the refrigerant used is provided in the engine
compartment on the lock carrier or in the plenum chamber.
• Different refrigerants are never to be mixed.
Note
When working on the refrigerant circuit, always heed the infor‐
mation given in the Sections on Safety measures. Refer to
⇒ “1.1.7 Safety Precautions“, page 8 and
⇒ “1.4.1 Refrigerant Circuit Precautions“, page 21 .
WARNING
♦ When performing work on refrigerant circuit, observe all
generally applicable safety precautions and pressure ves‐
sel regulations.
Special Tools and Accessories
The performance of proper workmanlike repairs on an air condi‐
tioning system:
• Requires the use of special tools and materials as listed in
⇒ “6 Special Tools“, page 198 .
• Requires compliance with the basic instructions for use of leak
detectors. Refer to
⇒ “4.2.1 Refrigerant Circuit, Determining Leaks “, page 143 .
• Requires expert knowledge.
Note
Environmentally hazardous draining of refrigerant is an offense
punishable by law. Refer to
⇒ “1.2 Laws and Regulations“, page 12 .
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
1. General Information 11