Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2023E-TRON S SPORTBACK PREMIUM PLUSREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAIR CONDITIONING - REFRIGERANT R1234YF SERVICING (REFRIGERANT CIRCUIT)
2023 Audi e-tron S Sportback Premium Plus
Air Conditioning - Refrigerant R1234YF Servicing (Refrigerant Circuit)
2023 Audi e-tron S Sportback Premium PlusSECTION Air Conditioning - Refrigerant R1234YF Servicing (Refrigerant Circuit)
- 87 Air Conditioning
- Refrigerant Circuit
- System Overview - Refrigerant Circuit
- General Description - Refrigerant Circuit Components
- Refrigerant Circuit Layout And Function
- Mechanically Driven A/C Compressor
- Electrically-Driven A/C Compressor
- Condenser
- Evaporator
- Reservoir
- Heat EXCHANGER For Heat Pump Operation
- Fluid Collector
- RESTRICTOR
- Receiver/Dryer
- Expansion Valve With And Without Shut-Off Valve
- Refrigerant Shut-Off Valves
- Refrigerant Line With Inner Heat EXCHANGER
- Quick-Release Coupling Connections On Refrigerant Line
- Seals
- Refrigerant Circuit Pipes And Hoses
- Pressure Relief Valve
- Check Valves
- Quick-Release Coupling Connections On Refrigerant Circuit
- Refrigerant Circuit Connections With Switch Valve
- Pressure Sensor And Switch On Refrigerant Circuit
- A/C Pressure/Temperature Sensors
- A/C Compressor Regulator Valve -N280-
- Refrigerant Temperature Sensor
- Possible Complaints
- Leaks, Finding
- General Information For Finding Leaks On The Refrigerant Circuit
- Refrigerant Circuit, Finding Leaks Using Electronic Leak Detector
- Leaks, Finding With UV Leak Detection System
- LEAKS, DETERMINING USING VACUUM TEST WITH A/C Service Station
- Leaks, Determining With A Pressure Test, With Nitrogen Or Compressed Air
- Components, Replacing
- General Information For Replacing Components
- Leaking Or Damaged Components, Replacing, Empty Refrigerant Circuit Except A/C Compressor And Receiver/Dryer
- Leaking Or Damaged Components, Replacing, Filled Refrigerant Circuit Except A/C Compressor And Receiver/Dryer
- A/C Compressor, Replacing Without The Need For Flushing Refrigerant Circuit
- A/C Compressor, Replacing Due To Leaking Or Internal Damage
- Dryer Cartridge / Receiver/Dryer, Replacing After Cleaning Refrigerant Circuit
- Receiver/Dryer, Replacing Without The Need For Cleaning Refrigerant Circuit
- Dryer Cartridge And Desiccant Bag, Replacing Without The Need For Cleaning Refrigerant Circuit
- A/C Compressor Regulator Valve -N280-, REMOVING AND INSTALLING, AND REPLACING
- Refrigerant Circuit, Cleaning
- General Information For Cleaning Refrigerant Circuit
- Preliminary Work To Clean Refrigerant Circuit (Flushing With Refrigerant R1234YF)
- Refrigerant Circuit Cleaning Process
- Connection Diagram For Cleaning (Flushing), Refrigerant Circuit With Expansion Valve And Receiver/Dryer
- Connection Diagram For Cleaning (Flushing), Refrigerant Circuit With RESTRICTOR And Container (Without High-Voltage System)
- Connection Diagram For Cleaning (Flushing), Vehicles With High-Voltage System (Without Additional A/C System Functions)
- Connection Diagram For Cleaning (Flushing), Vehicles With High-Voltage System (With Additional A/C System Functions Such As Heat Pump Operation)
- Adapter For Assembling Flushing Circuit
- Notes
- Audi A1 from MY 2017
- Audi Q3 from MY 2017
- Audi Q2 from MY 2017, Audi A3 from MY 2017, Audi Q3 from MY 2019, Audi TT from MY 2017, Audi A1 (GB) from MY 2019, Audi A3 from MY 2021
- Audi A3 e-tron
- Audi A3 TFSIe (8Y_) from MY 2021, Audi Q3 TFSIe (F3_) from MY 2021
- Audi Q4 e-tron (F4_) from MY 2022
- Audi A4 (8K_) from MY 2017
- Audi A5 (F5_) from MY 2016, Audi Q5 (FY_) from MY 2017, Audi A4 (8W_) from MY 2017
- Audi Q5 TFSI e (FY_) from MY 2019
- Audi A5 Coupe and Sportback from MY 2017, Audi Q5 from MY 2017, Audi A5 Cabriolet from MY 2016
- Audi A6 (4G_ oder 4X_ for China) from MY 2017, Audi A7 (4G_ oder 4X_ for China) from MY 2017
- Audi A6 (4A) from MY 2019, Audi A7 (4K) from MY 2018
- Audi A6 TFSI e (4K_) from MY 2019, Audi A7 TFSI e (4K_) from MY 2019
- Audi A8 (4H_) from MY 2010
- Audi A8 (4N) from MY 2018
- Audi A8 (4N_) TFSIe from MY 2019
- Audi Q7 (4M_) from MY 2016, Audi Q8 (4M_) from MY 2018
- Audi Q7 (4M_) e-tron from MY 2017, Audi Q7 TFSIe (4M_), Audi Q8 TFSIe (4M_)
- Audi R8 (4S_) from MY 2017
- Audi e-tron (GE_) from MY 2019, Audi Q8 e-tron (GE_) from MY 2024
- Audi e-tron GT (F8_) from MY 2022
- General Information On Blowing Through With Compressed Air Or Nitrogen
- Refrigerant Circuit, Flushing With Compressed Air Or Nitrogen
- Pressure, Checking With Pressure Gauge
- Working With A/C Service Station
- Refrigerant Circuit
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.