Hi, Gent's. last week, I bought a Toyota Landcruiser for my wife. It's 3-door automatic, 2.8 diesel, 2018, with 98000 km on a clock. The car is built in Japan for the USA market Drow from the Czech Republic to France. It was nice the car held the road very well, and the weather was good, Driving in Switzerland is a nightmare and we were 3km before our destination some idiot on a scooter hit our rear bumper. Just a scrunch. For the last 15 years, I have had a BMW, Maintenance, modification and repair myself, so all the tools, diagnostic, and TIS I have. But I don't know anything about Toyota engines. I don't understand why there are 2 environmental systems DPF and AD Blue. +EGR . It seems over-complicated and unnecessary. Usually, I delete EGR and clean the intake manifold and valves. Getting rid of AD Blue looks interesting idea. But first I need the information, and understanding of what I am doing and how it will reflect on the engine. Gent's if you point me in the right direction, where to find the Toyota Landcruiser diagnostic,(I have Launch diagnostic) where to find TIS, and anything related to the car I will be grateful. thanks