Audi A4: Do It Yourself
Audi A4 (B9) 2016-2026 Owner's Manual / Do It Yourself
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General information
Park the vehicle as far as possible from moving
traffic in the event of a breakdown. In the event
of a flat tire, park the vehicle on a level surface.
If you are on a steep hill, be especially ca
Tire mobility kit
Preparation
Applies to: vehicles with tire mobility kit
Read and follow the important safety precautions.
Set the parking brake.
Select the "P" selector lever position.
Check if a repair with the
SEE MORE:
A/C Technology Basic Principles
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - Solid
When water is heated in a container (heat absorption), water
vapor can be seen to rise. If the vapo
Checking Pressures on Vehicles with Expansion Valve and Receiver/Dryer (with
Internally Regulated Compressor)
General Information
Note
Connect the A/C service station. Refer to
→ Chapter "A/C Service Station, Connecting".
Observe the test requirements. Refer to
→ Chapter "Pressures, Checking".
- With the ignition switched off, check the pressure in the
refrigerant circuit (u
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