Audi A4: Switches and Sensors on Refrigerant Circuit and Connections
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information / Switches and Sensors on Refrigerant Circuit and Connections
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A/C Refrigerant High Pressure Switch -F23-
Note
Switch pressures, removing and installing switches as well
as switch arrangement and version. Refer to vehicle specific
refrigerant circuit
→ Heating, Ventilation and Air Condit
A/C Pressure Switch -F129-
Note
Switch pressures, removing and installing switches as well
as switch arrangement and version. Refer to vehicle specific
refrigerant circuit
→ Heating, Ventilation and Air Condit
A/C Pressure/Temperature Sensor
There are different versions of this sensor with different
functions and with different names. For exact name, allocation
and notes doe the respective function, refer to
→ Heating, Ventilatio
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Specified Values for the Refrigerant Circuit Pressures
Note
On vehicles with a high-voltage system but without a heat
pump (for example on Audi A3 e-tron, Audi Q5 hybrid, Audi A6
hybrid and Audi A8 hybrid) no check valves are installed in the
refrigerant circuit. On these vehicles valves are installed in
the refrigerant circuit which regulat
Roof Reinforcement, Attaching to Body
Roof Reinforcement, Attaching to Body, Sedan
Special tools and workshop equipment required
Assembly adhesive. Refer to the Parts Catalog.
Procedure
- Remove the headliner. Refer to
→ Chapter "Headliner, Removing and Installing, Sedan".
- Apply adhesive beads -arrows- to
the roo
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