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 MANUALSAUDI2024Q4 E-TRON PREMIUM, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSGENERAL, TECHNICAL DATA (REFRIGERANT R744 GENERAL INFORMATION)
2024 Audi Q4 e-tron Premium, AWD
General, Technical Data (Refrigerant R744 General Information)
2024 Audi Q4 e-tron Premium, AWDSECTION General, Technical Data (Refrigerant R744 General Information)
- 00 General, Technical Data
- Safety Precautions
- Notes
- Safety Precautions When Working On A/C Systems
- Safety Precautions When Handling Refrigerant
- Safety Precautions When Working On Vehicles With Start/Stop System
- Safety Precautions When Handling A/C Service Stations
- Safety Precautions When Handling Refrigerant R1234YF And R134A
- Safety Precautions When Working On Vehicles With High-Voltage System
- Safety Precautions When Working Near High-Voltage Components
- Safety Precautions During Road Test With Testing Equipment
- Laws And Regulations
- Repair Information
- Identification
- Technical Data
- Technical And Physical Principles
- A/C Technology Basic Principles
- Physical Characteristics
- Refrigerant R744
- Possible Dangers Of Refrigerant R744
- Refrigerant R744 Physical And Chemical Characteristics
- Refrigerant R744 Critical Point
- Refrigerant R744 Environmental Information
- Refrigerant R744 (Carbon Dioxide) Color And Odor
- Refrigerant R744 (Carbon Dioxide) Vapor Pressure And Critical Temperature/Pressure
- Refrigerant R744 And Its Effect On Metals And Plastics
- Refrigerant R744 Critical Temperature/Pressure
- Water Content Of Refrigerant R744 (Carbon Dioxide)
- Refrigerant R744 (Carbon Dioxide) Combustibility / Decomposition
- Refrigerant R744 Charge Factor
- Refrigerant Circuit With Refrigerant R744 (Carbon Dioxide), Detecting Leaks
- Refrigerant R744 Analysis
- Returning Contaminated Refrigerant R744 For Analysis, Processing, Or Disposal
- Product Characteristics
- A/C System Functions And Tasks
- Additional Information Sources
- Safety Precautions
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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.