Safety instructions for handling tetrafluorethane refrigerant R134a (M4 2021-2023)
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Injury hazard!
Refrigerant circuit is under high pressure!
Work on the refrigerant circuit may only be carried out by experts!
Draw off refrigerant without fail BEFORE all repair work on the refrigerant circuit.
The refrigerant circuit is depressurized AFTER suction.
It is absolutely essential to read and observe the relevant operating instructions for the A/C service unit used!
Refrigerant circuit is under high pressure!
Work on the refrigerant circuit may only be carried out by experts!
Draw off refrigerant without fail BEFORE all repair work on the refrigerant circuit.
The refrigerant circuit is depressurized AFTER suction.
- The pressure gauge on the A/C service unit must be checked for the actual pressure drop prior to repair work.
It is absolutely essential to read and observe the relevant operating instructions for the A/C service unit used!
Protective measures/rules of conduct:
- Wear safety goggles
- Wear oil-resistant hand protection
- Do not smoke!
- Observe country-specific safety regulations.
First aid measures:
- Eye contact: In the event of contact with the loops, rinse immediately with plenty of running water and consult an ophthalmologist.
- Skin contact: In the event of contact with skin, remove affected clothing immediately and rinse with plenty of water.
- After inhalation: If refrigerant vapors are inhaled in greater concentrations, remove the person affected to an area of fresh air and keep them under supervision. Call for a doctor. If breathing problems are experienced, breathe additional oxygen. If the person affected is breathing with difficulty or has stopped breathing, incline the person's head at the neck and administer the kiss of immobilization period.