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AdBlue

AdBlue is an additive used in the Selective Catalytic Reduction system to reduce harmful emissions from a diesel engine.

AdBlue has its own tank in the car that is filled via a separate filler pipe inside the fuel filler flap. Consumption depends on driving style, outdoor temperature and the system operating temperature.

Conditions for driving with AdBlue

You need to have the correct AdBlue quality in the tank to start the car. The Selective Catalytic Reduction system is very sensitive to pollutants.

The emission control system continuously monitors the AdBlue tank level, quality and dosage. If anything is wrong, a message is shown in the driver display.

Important

AdBlue is required for the function of the SCR system and legal emissions compliance. It is illegal to modify or manipulate the AdBlue supply system in any way so that no AdBlue reagent is consumed when it is required for legal exhaust emissions compliance. Any such tampering may be a criminal offence which may lead to legal prosecution actions. It is not permitted to operate the car with an empty AdBlue tank, since it will no longer be compliant with the legal requirements for exhaust emissions. Therefore, the car is equipped with a warning system to inform when AdBlue refilling is required. When the fill level in the AdBlue tank is getting low, warnings are displayed to inform that AdBlue refilling is needed.

Handling AdBlue

AdBlue[1] consists primarily of water, approx. 67.5% water and 32.5% urea. The fluid is not flammable but should be handled with care as it can irritate the eyes and skin.

Avoid inhaling vapour as well as contact with skin and eyes. Preferably use gloves that prevent irritation to sensitive skin when handling the fluid.

Warning

Actions for first aid:
  • Inhalation – seek fresh air.
  • Skin contact – wash the skin with soap and water.
  • Eye contact – rinse immediately with a lot of water.
  • Ingestion – rinse mouth thoroughly. Do not induce vomiting.

Seek medical attention if the discomfort remains or if a large quantity has been swallowed.

Important

AdBlue that is spilled on the ground, the car or on painted surfaces must be rinsed thoroughly with water. Avoid releasing the water into the drainage system.

Storage of AdBlue

AdBlue must be stored in tightly sealed original packaging at a temperature above -11 °C (12 °F) and below 30 °C (86 °F). The fluid must not be stored in direct sunlight.

AdBlue freezes at -11 °C (12 °F) but can be used again when the solution has thawed.

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