Audi Q7: Pressures, Checking

Audi Q7 (4M) 2016-2026 Workshop Manual / Heating, Ventilation & Air Conditioning / Refrigerant R134a Servicing / 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)
Specified Values for the Refrigerant Circuit Pressures
Refrigerant Circuit Pressures Specified Values, Vehicles with Heat Pump

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Refrigerant R134a

Refrigerant R134a Physical Data Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as refrigerant. The refrigerant used is tetrafluoroethane R134a, which boils at -26.5 ºC (-15.7 ºF) at

Start/Stop system

Description Applies to: vehicles with Start/Stop system The Start/Stop system can help increase fuel economy and reduce CO2 emissions. In Start/Stop mode, the engine shuts off automatically when stopped, for example at a traffic light. If certain conditions are met, the engine may stop before the

Audi Q7: Pressures, Checking

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General Information

Refrigerant Circuit, Checking Pressure with Service Station

Checking Pressures for Vehicles with Restrictor and Reservoir (with Internally Regulated Compressor)

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Refrigerant R134a

Start/Stop system