Instruction book AUDI Q5 VERSION OF YEAR 2018
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Audi Q5Service and care Checking and top...Selective catalyt...
Applies to: vehicles with selective catalytic reduction
On vehicles with selective catalytic reduction, a urea solution (AdBlue/DEF) is injected into the exhaust system upstream of a NOx catalytic converter in order to reduce nitrogen oxide emissions. The catalytic converter changes nitrogen oxides into nitrogen and water with the help of the urea solution AdBlue/DEF. The urea solution is known as AdBlue or DEF (Diesel Exhaust Fluid). The term AdBlue is used below.
The AdBlue is held in a separate tank in the vehicle. AdBlue consumption is normally between 1.0 ltr. - 3.0 ltr./1000 km. In individual cases, the consumption may be different as a result of how the vehicle is driven along with the operating and ambient temperature.
It is not sufficient to simply have AdBlue refilled when the vehicle is serviced because this may be necessary more often than services are due or between service intervals.
As soon as a message appears in the instrument cluster display reminding you to refill AdBlue, you must refill the AdBlue tank or have this done by a qualified workshop link.
Legal information
  • It is not permitted to make technical changes to the emission control system which have an effect on the exhaust gas treatment using AdBlue. The vehicle will no longer correspond to the Certificate of Conformity for its vehicle type if AdBlue according to ISO-22241-1 and approved by Audi is not used/refilled.
  • It may be a crime to operate the vehicle without the AdBlue specified by Audi.
  • If the emission control system is not operated as intended, the exhaust emissions may worsen.
  • The use of AdBlue for the operation of this vehicle is required by law.
Note
The instrument cluster display will tell you how far you can drive before the tank runs dry link. If the AdBlue tank runs dry, the engine cannot be started again after you switch off the ignition. Never run the AdBlue tank completely dry.
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