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.
Refrigerant Circuit Information Label
- The information label -A- provides information about the type of refrigerant used, the refrigerant quantity filled at production and the refrigerant oil filled.
- Symbols on the information label -A- indicate the dangers which may occur when handling refrigerant and/or when working on the refrigerant circuit.
- Norms and standards can also be stated, such as the valid SAE standards defined in the USA. The SAE J639 describes the safety precautions for A/C systems in passenger vehicles. The SAE J842 explains that only approved components and materials may be used for refrigerant R1234yf, and SAE J2845 says that only trained and certified technicians may perform repair and service procedures on the A/C system refrigerant circuit.
- Depending on the version and the vehicle date of manufacture, the GWP value for the refrigerant used may also be specified.
- The capacities and the type of refrigerant oil specified on the information label -A- show the status at the time of vehicle production. The current applicable values are those in the vehicle-specific Service Information. Refer to Technical Data (vehicle-specific Service Information).
Regardless of the specifications on the information label -A- always adhere to the country-specific applicable laws, legislation and standards. In the area of the European Union for example the applicable European Union laws apply. Refer to LAWS AND REGULATIONS .
Specifies the type of refrigerant and designated capacity. Refer to Technical Data (vehicle-specific Service Information).
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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.