What is AdBlue?
AdBlue™, is a non-toxic, colourless, odourless and non-flammable fluid. Stored in a dedicated tank in your car, it is injected into the exhaust system to clean exhaust gases. Selective Catalytic Reduction (SCR) technology is fitted to Volkswagen diesel vehicles, and enables Volkswagen to meet EU6 emissions legislation by reducing the levels of nitrogen oxide (NOx) emitted from the exhaust system. In addition to a new generation of catalytic converter, SCR Technology requires the use of DEF.
Your Volkswagen will tell you when to top up your AdBlue™. The first message is displayed when the remaining range is approximately 1,500 miles, and is repeated every 62 miles until the range reaches 1,000 miles, at which point the warning turns amber. This warning is repeated every 31 miles and is accompanied by an audible tone. If these warnings are not acted upon, the warning turns red; once this happens the car will not restart once the ignition is turned off. This is not a fault, but a required feature of the system. If this stage is reached the system will need a full top-up before the car can be restarted. Further information is available in the vehicle handbook.