AdBlue is a specialized liquid that is used in the SCR (Selective Catalytic Reduction) system. It is an aqueous solution of urea at 32.5% nominal concentration. The main reason to use AdBlue is to reduce the emission of nitrogen oxides. Unfortunately, this system generates very high operating costs. Adblue is stored in a separate tank. In different models, the tank inlet is located in various places, for example, in the trunk, under the hood or near the neck of the diesel tank. From the tank, the mixture reaches the SCR catalyst where the nitrogen oxides are reduced to harmless water and nitrogen. A full tank of AdBlue is enough to travel 10,000 km. Fluid leaks must be replaced. If the AdBlue level is too low, the ECU will prevent the engine from starting. Modern cars are equipped with indicator lights and acoustic signals that inform the driver that it is time to fill up the AdBlue tank. DISABLE ADBLUE SYSTEM The AdBlue and SCR system is complex and susceptible to failure. Electronic nitrogen sensors, modules, pumps - all of these devices can fail and can be very expensive to replace. In addition to vehicles that travel hundreds of kilometers, you must regularly refill the Adblue tank. All this generates an additional cost for the use of the car, which drivers want to avoid. The AdBlue deactivation service consists of the electronic deactivation of AdBlue with the removal of the dash lights and warning messages on the ECU associated with the system. In most cases, it is sufficient to properly reprogram the engine management system. For some models, in addition, it is necessary to disconnect the SCR unit from the vehicle.