Audi A4: Pressures, Checking
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Pressures, Checking
- General Information
- Refrigerant Circuit, Checking Pressure with Service Station
- Checking Pressures for Vehicles with Restrictor and Reservoir (with Internally Regulated Compressor)
- Checking Pressures on Vehicles with Expansion Valve and Receiver/Dryer (with Internally Regulated Compressor)
- Vehicles with Restrictor, Reservoir and A/C Compressor Regulator Valve -N280- (Externally Regulated A/C Compressor), Checking Pressures
- Vehicles with Restrictor, Receiver/Dryer and A/C Compressor Regulator Valve -N280-, Checking Pressures, Externally Regulated Compressor
- Checking Pressures on Vehicles with Electrically Driven A/C Compressor (Vehicles with Hybrid Drive)
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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
Refrigerant Circuit, Checking Pressure with Service Station
General Information
Note
All test conditions marked * are vehicle-specific and are
described in the Repair Manual for the relevant vehicle.
Check cooling performance.
Connections with val
Checking Pressures for Vehicles with Restrictor and Reservoir (with
Internally Regulated Compressor)
General Information
Note
Connect the A/C service station. Refer to
→ Chapter "A/C Service Station, Connecting".
Observe the test requirements. Refer to
→ Chapter "Pressures,
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Gearshift Mechanism, Checking
WARNING
Risk of injury and accident by accidentally engaging
a selector lever position with the engine running.
Before working with the engine running, move the
transmission into "P" and pull the parking brake button
to activate the electro-mechanical parking brake.
Pay attention to t
Axle Alignment Information
Wheel alignment must only performed using VW/Audi-approved
alignment equipment.
Each time wheels are aligned, both front and rear wheels
must be aligned. Otherwise, the correct driving handling of the
vehicle cannot be ensured.
Note
Axle alignment should not be performed until the vehic
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