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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Rear Seat Entertainment System (RSE)
Overview - Rear Seat Entertainment System
The Rear Seat Entertainment System (RSE, 9WF) consists of:
Left Rear Information Display Control Head Control Module
-J648-/Right Rear Information Display Control Head Control
Module -J649- on the left/right front seat backrest frame
Information Electro
Battery
Battery General Information
To guarantee a long service life, the Battery -A- must be
checked, serviced and maintained as described in this manual.
The Battery -A- supplies the power to start the engine. The
Battery -A- also acts as a power reserve for the entire vehicle
electrical system.
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