Audi Q5: Selective catalytic reduction
General information
Applies to vehicles: with selective catalytic reduction
In vehicles with selective catalytic reduction, a urea solution (AdBlue) is injected into the exhaust system before a nitrogen oxide catalytic converter to reduce nitrogen emissions.
The AdBlue is carried in a separate tank in the vehicle. The AdBlue usage accounts for approximately 0.5% to 1.2% of the diesel fuel that is used.
When a message about refilling the AdBlue appears in the instrument cluster display, you must refill the AdBlue yourself or have it refilled by an authorized Audi dealer or authorized Audi Service Facility.
Tips
- The display indicates the distance remaining that can be driven. If the AdBlue tank is completely empty, the engine will not start again after the ignition is switched off.
- AdBlue is required by law to operate this vehicle.
Messages in the instrument cluster display
Applies to vehicles: with selective catalytic reduction
The display indicates if the AdBlue level is low or if there is a system malfunction.
AdBlue level low
You will be informed if the AdBlue in the tank drops below a certain level.
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Refill AdBlue. See
owner's manual
This message appears when there is only enough AdBlue left to drive the distance indicated in the instrument cluster. Fill the AdBlue.
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Refill AdBlue!
No restart in 600 mi (1000 km)! See owner's
manual
This message appears when there is only enough AdBlue left to drive the distance indicated in the instrument cluster. Fill the AdBlue. Otherwise the engine will not start again if you stop it once the distance indicated has been driven.
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Refill AdBlue! No
restart! See owner's manual
This message appears when the AdBlue tank is empty. Fill the AdBlue. Otherwise you will not be able to start the engine again once you stop it.
The AdBlue must be refilled when the amount in the tank has reached the minimum level.
Incorrect filling/system malfunction
A message appears if the AdBlue tank was filled with a fluid other than AdBlue and the system has detected that the tank was filled incorrectly, or if there is a system malfunction.
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AdBlue: Fault! No
restart in 600 mi (1000 km)! See owner's manual
This message appears when it is only possible to drive the distance indicated in the instrument cluster. Drive to the nearest authorized Audi dealer or authorized Audi Service Facility to have the malfunction corrected. Otherwise the engine will not start again if you stop it once the distance indicated has been driven.
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AdBlue: System fault. No
restart! See owner's manual
This message appears if the system has detected that the tank was filled incorrectly or that there is a malfunction. Drive immediately to the nearest authorized Audi dealer or authorized Audi Service Facility to have the malfunction corrected. Otherwise you will not be able to start the engine again once you stop it.
