What are the consequences of removing urea from the US-spec GL350?
2 Answers
It can cause crystallization of the remaining diesel exhaust fluid (DEF) in the SCR system, leading to clogged pipes and nozzles. Additionally, the prolonged lack of fluid immersion can reduce the lifespan or even damage various components of the SCR system. Below are relevant details: 1. DEF Pump: This is an integrated unit with the DEF tank, primarily responsible for extracting DEF from the tank and delivering it to the nozzle. It combines with air pressure to form high-pressure injection into the exhaust pipe. 2. SCR System: Also known as "Selective Catalytic Reduction," its purpose is to ensure exhaust emissions meet standards before release. If the processed exhaust consistently shows excessive emissions, the DCU will continuously command the DEF pump to increase the injection volume.
As someone who deeply cares about the environment, disabling the urea system in a US-spec GL350 is harmful to both yourself and others. Urea, used in diesel vehicles through the SCR system, converts harmful nitrogen oxides into harmless gases, protecting air quality. After disabling it, emissions skyrocket several times, worsening air pollution and smog, which affects everyone's respiratory health. The vehicle's computer detects the issue and immediately enters limp mode, limiting speed and making long trips unbearable. Over time, the engine overheats and faces increased stress, leading to catalytic converter clogging and damage, with repairs costing at least several thousand dollars. Even worse, the US EPA imposes hefty fines, starting at hundreds of dollars for emission violations. Overall, skipping small inconveniences invites major troubles—it's better to responsibly use AdBlue and protect the environment.
