Audi A4: Refrigerant Circuit General Information
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information
- Vehicles with a High Voltage System (Hybrid Vehicles)
- Refrigerant Circuit Components Allocation, High and Low Pressure Sides
- Refrigerant Circuit
- Connections for Quick-Release Coupling on Refrigerant Circuit
- Switches and Sensors on Refrigerant Circuit and Connections
- Refrigerant Circuit Pressures and Temperatures
- Pressure Gauge, Tests and Measurements
- Service and Recycling Units
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Vehicles with a High Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- Individuals with electronic/medical life- and health su
General Information
High pressure side are the condenser, receiver/dryer and
restrictor or expansion valve to separate the high and low
pressure liquid ends.
High pressure results from the restrictor or expansion valve
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Digital compass
Switching the compass on and off
Applies to: vehicles with digital compass
Fig. 55 Rearview mirror: digital compass is switched on
To turn the compass on or off, press the button
(1) until the compass display in the mirror turns
on or off.
The digital compass only works when the ignition
is tu
Microphone Unit in Front Roof Module -R164-, Removing and Installing
The Microphone Unit in Front Roof Module -R164- in the Front
Interior Lamp -W1- is comprised of the Interior Microphone
-R74-, the Left Front Microphone -R140- and the Right Front
Microphone -R141-. The individual microphones can be replaced
separately.
Removing
- Turn off the ignition and
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