Audi A4: Tools and Equipment
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Tools and Equipment
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Testing Equipment, Tools and Materials
General Information
Note
This list outlines the testers, tools and materials required
for expert refrigerant circuit repair work.
For tools and materials available from the distribution
ce
Commercially Available Tools and Materials
Fin comb
Fill hoses
5/8"-18 UNF thread
Note
Use differently colored charging hoses (1800 mm long).
Have valve opener and spare seals to hand.
A charging hose in short version is also incl
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Connections for Quick-Release Coupling on Refrigerant Circuit
General Information
Only valves and connections that are resistant to
refrigerant R134a and refrigerant oil must be installed.
Different connections (outer diameter) for high pressure and
low pressure side.
Discharge the refrigerant circuit before removing valves or
valve inserts.
Always scr
Start/Stop system
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
In Start/Stop mode, the engine shuts off automatically
when stopped, for example at a traffic
light. If certain conditions are met, the engine
may stop before the
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