When servicing the SCR system what is a necessary step?

When servicing the SCR (Selective Catalytic Reduction) system, it is crucial to prevent skin and eye contact with the DEF (Diesel Exhaust Fluid), which is primarily composed of urea. Urea can cause skin irritation and may lead to serious eye damage if it comes into contact with the eyes. Therefore, taking precautions such as wearing protective gloves and goggles is essential to ensure safety while handling this fluid.

This safety measure aligns with handling chemicals in a workshop environment, where the risk of exposure can pose health hazards. By focusing on preventing contact with DEF, technicians safeguard themselves against potential chemical burns and irritation, which is vital in maintaining a safe working environment while performing maintenance or repairs on the SCR system.