Safety Precautions When Working On SCR System: Notes
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
The Reducing Agent Increases the Risk of Injury
Reducing agents may cause eye and skin irritation as well as injury to the respiratory system and possible poisoning.
-- Wear protective eyewear.
-- Wear safety gloves.
-- Wear protective work clothing.
-- Make sure there is a fresh air supply. Turn on exhaust extraction when in closed spaces.