Audi A4 Owners & Service Manuals

Audi A4: 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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 Overview - Antenna Systems

Overview - Antenna Systems, Sedan, USA The antenna systems consist of window antennas, a Roof Antenna - R216- and bumper antennas. Window Antennas Antenna -R11- (AM/FM1)/TV Antenna 1 -R55- (TV1) to the Antenna Amplifier -R24- at the top of the right D-pillar TV Antenna 2 -R56- (TV2) to the TV A

 Vehicles with Restrictor, Reservoir and A/C Compressor Regulator Valve -N280- (Externally Regulated A/C Compressor), Checking Pressures

Specified Values for the Refrigerant Circuit Pressures   Note Connect the Air Conditioning (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

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