Audi A4: 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 Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).
Function:
Switches the coolant fan to the next higher level when the pressure in the refrigerant circuit increases (approximately 16 bar (232 psi) ).
Magnetic Clutch High Pressure Switch -F118-
Note
Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).
Function:
Switches off A/C compressor when there is excessive pressure in the refrigerant circuit (approximately 32 bar (464 psi) ).
A/C Refrigerant Low Pressure Switch -F73-
Note
Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).
Function:
Switches off A/C compressor when there is excessive pressure in the refrigerant circuit (approximately 2 bar (29 psi) ).
Refrigerant Circuit Connections with Valve for Switches
Note
Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).
- Different threads for switch on high pressure and low pressure sides.
- Only valves and O-ring seals that are resistant to refrigerant R134a and refrigerant oil must be installed.
A - Connection (soldered in)
B - O-ring seal
C - Valve (with O-ring seal)
Note
To remove and install the valve insert -C- when the refrigerant circuit is discharged, use, for example, an adapter from the Refrigerant Sockets -T10364- (for the tightening specification. Refer to → Chapter "Connections with Schrader Valve (Needle Valve)").
READ NEXT:
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
Refrigerant Circuit Pressures and Temperatures
General Information
Caution
When performing work on refrigerant circuit, observe
all generally applicable safety precautions and pressure
container regulations.
The pressures and temperatur
SEE MORE:
Suspension
Adaptive dampers
Applies to: vehicles with suspension control
The adaptive dampers are an electronically-controlled
damping system. The firmness of the suspension
will adapt to the driving conditions and
the driving situation. The settings depend on the
selected Audi drive select* mode.
Ground clear
Interior Door Mechanism, Removing and Installing
Removing
- Remove the door trim panel. Refer to
→ Chapter "Front Door Trim Panel, Removing and Installing".
- Place the door trim panel on a soft surface.
- Equipped on some models: Remove the door ambient lighting lamps
-3- on the back of the door trim
panel by releasing the
