On vehicles with A/C systems
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2009 Audi S4, 2009 Audi A4, 2008 Audi S4, 2008 Audi RS 4, and 2008 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
When performing paint work repairs, object temperatures of 80 °C are not to be exceeded in drying booths or their preheating zones.
Reason:
Exposure to heat creates considerable pressure in the system which could cause it to burst.