AdBlue/DEF information added to the CRS |
Thursday, June 29th 2017
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AdBlue/DEF information added to the CRS

News from Moditech Rescue Solutions BV

The processing of several new materials and fluids in the vehicle industry means rescue workers are faced with new challenges again and again. In this and future newsletters, we will focus our attention mainly on the health risks associated with these developments in relation to vehicle fires and traffic accidents.

In addition, much of this information will be incorporated into the Crash Recovery System to provide the rescue workers with important information on the spot. This month we would like to inform you about AdBlue, also know as DEF (Diesel Exhaust Fluid) in passenger vehicles and points of concern for rescue workers during an accident.

Read more in our newsletter!


AdBlue/Diesel Exhaust Fluid (DEF) is a liquid that can be used in diesel engines to reduce the emission of harmful substances. Its use has already become commonplace in trucks. However, the use of AdBlue/DEF is also increasingly found within the automotive industry. Due to ever more stringent environmental demands, this fuel additive is an attractive way for many car manufacturers to reduce the harmful emissions of their vehicles. Volkswagen, Audi, BMW, Mercedes Benz and Peugeot are among those who have developed cars that are suitable for it. AdBlue/DEF is also used in numerous diesel-powered light trucks in North America. Dodge, Chevrolet, and Ford all require DEF in their diesel pickups. Even the new diesel in the small Chevrolet/GMC pickups use it!

AdBlue/DEF is a 32.5% solution of urea in demineralised water. It's good to know whether there is AdBlue/DEF in the vehicle. If an accident causes a liquid leak, the CRS can be used to determine whether the AdBlue/DEF storage tank is damaged, thereby making it easier to determine the type of liquid it concerns. 

Porsche Panamera Diesel with the AdBlue/DEF storage tank at the rear


NB: When heated, AdBlue/DEF decomposes into Ammonia. Ammonia is a colourless toxic and flammable gas with a strong, pungent smell. Ammonia formed by heating occurs when a vehicle that uses AdBlue/DEF is on fire.


In the June update, several vehicles, including Jaguar, Volkswagen, Audi and Porsche were modified. In the CRS image of the vehicle, there will be a second smaller storage tank visible if the vehicle uses AdBlue/DEF. The colour of this storage tank is the same as the fuel tank - green. When the emergency service worker clicks on this AdBlue/DEF tank, a new window appears that gives advice on what to do in the case of leakages and fire. From now on all new models with Adblue/DEF will be added automatically. Existing vehicles will be modified in stages.

AdBlue/DEF Information Window


In the future, more of these types of modifications will be included in the CRS. These modifications are activated after updating your software. So don't forget to do your monthly updates! We will also explain these modifications to you in our newsletter. Any questions, please don't hesitate to contact us via!