Photo : Etienne Girardet via Unsplash
Today, more and more diesel is equipped with SCR (Selective Catalytic Reduction) Diesel technology. This aims to significantly reduce harmful nitrogen oxide emissions to the environment and thus comply with the strict limits on gas emissions established by European (Euro 6) and American standards. This is achieved with AdBlue Warning light, which, contrary to what many people think, is not a fuel additive butan additional fluid for use in diesel cars that needs to be topped up regularly. For this, the car has an autonomous tank for this fluid. The filler neck can be found under the fuel filler cap, in the boot or in the engine compartment, depending on the car model.
Consumption of AdBlue Warning Light
Its consumption varies depending on the type of driving, the system’s operating temperature, and the ambient temperature. A car consumes about 1.5 to 2.5 liters of AdBlue warning light per 1000 km. Topping up is a simple thing and should be done regularly, especially before long trips, such as a vacation. If the tank is empty, the engine will not start!
But do not be alarmed because all cars with this system have a warning system on the instrument panel that will inform you when it is necessary to top up the AdBlue warning light tank. At the same time, it is also informed of autonomy.
To know the composition of AdBlue warning light, we use here the explanation that can be found on this liquid on the websites of Galp, BP and Repsol gas stations.
Action for Reduction of Harmful Gases
AdBlue warning light is an aqueous urea solution (32.5% pure urea, 67.5% demineralized water) that acts on the exhaust gases of heavy vehicle engines as a catalytic converter to reduce harmful nitrogen oxide emissions (NOx) generated in the combustion processes.
BP: AdBlue is a chemical product (urea dissolution) of synthetic origin that makes it possible to reduce emissions from heavy vehicles with a diesel engine with the SCR (Selective Catalytic Reduction) system installed. This product, endowed with extraordinary purity, complies with the European standard DIN 70070 and has the most demanding quality control, allowing you to reduce polluting emissions and increase the protection of your vehicle’s catalytic converter.
Repsol: [Adblue warning light is] A synthetic product composed of a solution of urea and water, which reduces emissions from heavy vehicles. It is a product specifically designed for vehicles with SCR technology. Ecoblue is not added to the fuel tank but acts on the catalyst with the gases generated in combustion, converting Nitrogen Oxide into pure Nitrogen and water (steam).
WARNING
If the warning light does not come on when the ignition device is in MAR position or if it stays on while driving, there may be a fault in the restraint systems; in this case, the airbags or pre-tensioners may not activate in the event of an accident or, in a more limited number of cases, they may activate incorrectly. Before proceeding, contact a Fiat Dealership to have the system checked immediately.
Failure of the warning light is indicated by the lighting of the icon on the instrument panel display. In this case, the warning light may not indicate any anomalies in the restraint systems. Before proceeding, contact a Fiat Dealership to have the system checked immediately.
In the presence of a fault and in the event of violent braking, the rear wheels may lock, with the consequent possibility of swerving.
ATTENTION
If, moving the ignition device to MAR, the warning light does not come on or if, while driving, it comes on with a steady or flashing light (on some versions, together with a message shown on display), go to them as soon as possible to the Fiat Dealership.
If the warning light or the icon on display starts to flash while driving, contact a Fiat Dealership. If the symbol lights up while driving, stop the engine immediately and contact a Fiat Dealership.
Driving with the symbol on can cause severe damage to the gearbox, causing it to break. Also, it can cause theoil to overheat: its possible contact with a hot engine or high-temperature exhaust components can cause fires.
The water in the supply circuit can cause severe damage to the injection system and irregularities in the engine’s operation. If the symbol appears on display, contact a Fiat Dealership as soon as possible for the draining operation.
Whenever the same signal occurs immediately after filling, water may have been introduced into the tank: in this case, switch off the engine immediately and contact a Fiat Dealership.
The driving speed must always be adapted to the traffic situation and the atmospheric conditions and respect the current laws of the Highway Code. We also point out that it is possible to turn off the engine even with the PDF warning light on; however, repeated interruptions of the regeneration process can cause premature engine oil degradation. For this reason, it is always advisable to wait for the symbol to go out before switching off the engine, following the instructions given above. It is not advisable to complete the PDF regeneration with the vehicle stationary.
As soon as the warning light comes on, the degraded engine oil must be replaced as soon as possible and no later than 500 km after the first warning light comes on. Failure to comply with the above information can cause
severe engine damage and void the warranty. We remind you that the lighting of this warning light is not relatedto the amount of oil present in the engine; therefore, in case of intermittent ignition, the user should not add more oil to the engine.
If the symbol flashes while driving, contact a Fiat Dealership.
If the AdBlue (UREA) tank is empty and the engine is stopped, it will not be possible to restart it until the AdBlue (UREA) tank is filled with at least 5 liters of AdBlue (UREA).
Keyword: What is SCR in Adblue Warning Light