Rear A/C Unit, Removing And Installing - Audi Q7 2007 Repair Manual

Note
Observe the information regarding operating the A/C system after
filling. Refer to ⇒ A/C System with Refrigerant R134a; Rep. Gr.
87 ; A/C System General Information (A/C System with Refriger‐
ant R134a; A/C System General Information). After charging the
A/C system.
– If necessary, check function of A/C system. Use the Vehicle
Diagnostic Tester via the "Guided Fault Finding" function.
19.3

Rear A/C Unit, Removing and Installing

Note
The rear A/C unit is optional equipment
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
Removing
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Discharge the refrigerant circuit. Refer to ⇒ A/C System with
Refrigerant R134a; Rep. Gr. 87 ; Refrigerant Circuit (A/C Sys‐
tem with Refrigerant R134a; Refrigerant Circuit, Using Service
Station).
– Switch off ignition.
– Release the pressure in coolant circuit by opening the cap on
the coolant expansion tank. Refer to ⇒ Engine Mechanical;
Rep. Gr. 19 .
– Disconnect the refrigerant lines from the rear expansion valve.
Refer to
⇒ "15.11 Refrigerant Lines from Rear Expansion Valve, Dis‐
connecting and Connecting ", page 272
– Bring the rear A/C unit into service position. Refer to
⇒ "9.39 Rear A/C Unit, Bringing into Service Position",
page 180 .
Heating, Ventilation and Air Conditioning - Edition 04.2013
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Audi Q7 2007 ➤
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19. Rear A/C Unit