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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSAUDI2024Q4 E-TRON PREMIUM, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)HYBRID/ELECTRIC POWERTRAINBATTERY MANAGEMENT SYSTEMSGENERAL, TECHNICAL DATA (REFRIGERANT R744 GENERAL INFORMATION)00 GENERAL, TECHNICAL DATATECHNICAL AND PHYSICAL PRINCIPLESPHYSICAL CHARACTERISTICSREFRIGERANT R744 AND ITS EFFECT ON METALS AND PLASTICS
2024 Audi Q4 e-tron Premium, AWD
Refrigerant R744 And Its Effect On Metals And Plastics
2024 Audi Q4 e-tron Premium, AWDSECTION Refrigerant R744 And Its Effect On Metals And Plastics
- In its purest state, refrigerant R744 is chemically stable and does not corrode iron, aluminum, and specially developed and therefore suitable plastics, for example.
- However, refrigerant R744 contaminants, such as water or chlorine compounds, cause corrosion of certain metals and plastics. This can lead to blockage, leaks or deposits on the A/C compressor piston.
- Certain base metals (magnesium, for example), which are strong reactants, react with carbon dioxide, forming carbon and metal oxides.
- Unsuitable materials (such as seals and hoses that were not developed for refrigerant R744 and the refrigerant oil used) can also be affected and damaged by pure refrigerant R744 or refrigerant oil.
- If the refrigerant is contaminated with chlorine compounds, for example, then the metals and the plastic developed and approved for this refrigerant and refrigerant oil will be negatively affected. This can lead to blockage, leaks or deposits on the A/C compressor piston.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.