Why is my AdBlue light still on after filling it up?
There could be several reasons why your AdBlue light is still on even after filling up the AdBlue tank. Some possible causes could be: AdBlue tank sensor issue: The AdBlue tank sensor may not be working properly, causing the system to think that the tank is empty, even though it’s full. Never overfill the system, either. This situation can create a vacuum within the tank that prevents the AdBlue from being injected into the exhaust. Consequentially, the AdBlue light may remain illuminated after filling. The AdBlue pump and circuitry are located on top of the tank in some cars.You should never allow your car to run out of AdBlue. If it does, the engine will go into ‘limp’ mode, drastically reducing power to keep NOx emissions within legal limits. A warning will appear on the driver’s display, and you should refill the AdBlue tank as soon as possible.Most vehicles which require adblue will give you a warning when there’s about 2-3 litres left. Depending on the vehicle and how you drive it, this will give you about 1,200 to 1,500 mile range.It is possible to drive your vehicle with an AdBlue warning light, but it is not recommended. If you continue to drive with a low AdBlue level, you risk damaging your engine and other components of your vehicle.
Why is my DEF light on but the tank is full?
If this float becomes stuck or the sensor itself fails, it can send an incorrect “empty” signal to the Engine Control Module (ECM), even if the tank is full. This is a common reason why the DEF light remains on immediately after a refill. How do I reset the DEF light after filling the tank? After refilling the DEF tank, start the engine and drive slowly and steadily for several minutes. A few minutes of driving will recalibrate the system. If it doesn’t, you may need to use an OBD-II scanner to identify the cause of the problem.
Why is the AdBlue tank full but the warning light still on?
There could be several reasons why your AdBlue light is still on even after filling up the AdBlue tank. Some possible causes could be: AdBlue tank sensor issue: The AdBlue tank sensor may not be working properly, causing the system to think that the tank is empty, even though it’s full. Overfilling the AdBlue tank can cause damage to the AdBlue system and can also cause harmful gases to be emitted from the exhaust. The AdBlue tank should be refilled to the maximum level indicated on the dashboard.Never overfill the system, either. This situation can create a vacuum within the tank that prevents the AdBlue from being injected into the exhaust. Consequentially, the AdBlue light may remain illuminated after filling. The AdBlue pump and circuitry are located on top of the tank in some cars.Even before engine damage occurs, using water instead of AdBlue® will also increase fuel consumption and cause your vehicle to break emissions reduction rules. As such, if you do mistakenly use water instead of AdBlue®, do not start your engine and contact a professional.As AdBlue is not compatible with any engine materials it can very quickly corrode all components and pipework within the engine. If this happens the entire fuel system will need to be replaced. You must contact a professional to drain the tank immediately and dispose of all contaminated fluid.
Why is my AdBlue light not going off?
A smart way to resolve this issue is to turn on your ignition switch, wait for 30 seconds, and let all your vehicle’s lights turn on. Now, switch off the ignition and again start your engine. If the warning light is on, drive your vehicle for a few miles. This may sort out any glitch present in the system. Restart the vehicle: Simply restarting the engine after topping up can sometimes turn off the warning light. Drive the vehicle: The warning light may switch off after driving a certain distance or completing a few trips. Run a diagnostic: If the light remains on, consult your dealership or a certified garage.A smart way to resolve this issue is to turn on your ignition switch, wait for 30 seconds, and let all your vehicle’s lights turn on. Now, switch off the ignition and again start your engine. If the warning light is on, drive your vehicle for a few miles. This may sort out any glitch present in the system.