Audi A4: A/C Service Station, Connecting
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / A/C Service Station, Connecting
- General Information
- Service Station, Connecting with Connections on Low- and High Pressure Side of Refrigerant Circuit
- Service Station, Connecting with No Connection on Low- and High Pressure Side of Refrigerant Circuit
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General Information
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.
- I
Service Station, Connecting with Connections on Low- and High Pressure Side
of Refrigerant Circuit
Servicing Station, Connecting for Measuring and Testing
- Turn off the ignition.
- Connect the service station to the power supply.
- Connect the quick-release coupling adapter to the c
Service Station, Connecting with No Connection on Low- and High Pressure
Side of Refrigerant Circuit
General Information
On the following vehicles, no service connection is provided
for the service station on the low-pressure side of the
refrigerant circuit; adapters must be used to connect the
se
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Cooling system
Coolant
The engine cooling system is filled with a mixture
of purified water and coolant additive at the factory.
This coolant must not be not changed.
The coolant level is monitored using the
indicator
light. However, you should occasionally
check the coolant level.
Messages
The following messag
Fuel Filler Door Unit
Overview - Fuel Filler Door Unit
1 -
Drain Hose
From the fuel filler door unit
Removing and installing. Refer to
→ Chapter "Fuel Filler Door Unit Drain Hose, Removing and Installing".
2 -
Emergency Release Cable
Removing and installing. Refer to
→ Chapter "E
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