Refrigerant R134A Properties: Combustibility
WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Refrigerant is non-flammable. It actually has a fire-resistant or fire extinguishing effect. Refrigerant breaks down when exposed to flames or extremely hot surfaces. UV light (occurring for example during electric welding) also causes refrigerant decomposition. The resulting decomposition products are toxic and must not be inhaled. However, irritation of the mucous membranes provides an adequate and timely warning.