Safety Precautions When Working On Cooling System
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2020 Audi A4 allroad, 2020 Audi A4 Quattro, 2019 Audi A4 allroad, 2019 Audi A4 Quattro, and 2018 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Risk of scalding due to hot coolant
The cooling system is under pressure when the engine is warm. Risk of scalding due to hot steam and hot coolant.
-- Wear safety gloves.
-- Wear protective eyewear.
-- Reduce the pressure by covering the coolant expansion tank cap with a cloth and carefully opening it.