What is the warning light for AdBlue?

What is the warning light for AdBlue?

When the warning light is yellow, it is merely telling you that your AdBlue fluid is getting low and needs to be refilled soon as possible. When the red warning light appears, there isn’t enough AdBlue or the system is malfunctioning. If this is the case, the vehicle will not start.

How do I add AdBlue to my Mercedes?

Turn ignition on once. Press and hold the gas pedal. Keep the gas pedal pressed until the glow plug comes back on. Wait for the glow plug light to stop blinking. Then turn off the ignition. Wait 10 seconds with the ignition off. Turn the ignition back on. Press the gas pedal two times.

Where does the AdBlue fluid go in a Mercedes?

The AdBlue fluid is sprayed in the exhaust gasses and lowers the NO x emissions. If you see an AdBlue Warning light on your instrument cluster, it may be time to refill your Mercedes-Benz with AdBlue.

When do you turn off the AdBlue warning light?

Typically you have about 1000 miles from the point that you see AdBlue warning light until the system reaches zero. Don’t get stranded or stuck in a parking lot. Add AdBlue. AdBlue is cheap and easy to add. In most cases, the AdBlue warning message should turn off after a few driving cycles.

Can a Mercedes AdBlue heater be replaced without warranty?

One of the failure points of the Mercedes AdBlue system is the AdBlue heater or the processor. If your Mercedes-Benz is still under warranty, you should have the dealer fix this problem free of charge. If you are out of warranty, consider replacing the AdBlue heater yourself with a replacement unit if you are looking to minimize repair cost.

What should I do if my Mercedes AdBlue is not working?

Depending on the model, you will get some of the following messages: Check AdBlue No engine Start Possible in XXX miles/km. While there are ways to reset Mercedes limited start condition (eBay link), it is important to find the root of the problem and fix an AdBlue system that is not working.

The AdBlue fluid is sprayed in the exhaust gasses and lowers the NO x emissions. If you see an AdBlue Warning light on your instrument cluster, it may be time to refill your Mercedes-Benz with AdBlue.

What does Mercedes AdBlue do to the exhaust?

Mercedes AdBlue Problems AdBlue is just another name for Diesel Exhaust Fluid or DEF. This solution of urea in water is injected into exhaust gases as a part of the exhaust treatment system called selective catalytic reduction or SCR. This process converts up to 90% of the harmful nitrogen oxides produced by the vehicle into nitrogen and water.

One of the failure points of the Mercedes AdBlue system is the AdBlue heater or the processor. If your Mercedes-Benz is still under warranty, you should have the dealer fix this problem free of charge. If you are out of warranty, consider replacing the AdBlue heater yourself with a replacement unit if you are looking to minimize repair cost.

Posted In Q&A