Why is the AdBlue light still on after filling the VW?
When the AdBlue warning light remains after refilling, the system may need a reset or sensor check. The AdBlue tank level sensor or dosing unit could be faulty or clogged. After filling, drive the vehicle to allow the system to recalibrate. 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.Attach an anti-spill nozzle to the AdBlue® container. If you do not have an anti-spill nozzle to hand, remove the AdBlue® tank cap and place a funnel in the top of the reservoir. Slowly refill the AdBlue® tank until it is full. Some vehicles require a dashboard reset after a top-up to remove the AdBlue® warning light.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.What happens if I runout of Adblue – is it okay to drive without it? If you run out of AdBlue while you’re driving, then the engine’s power and performance will be reduced to limit its emissions. Once you’ve stopped, you won’t be able to restart the engine if the AdBlue tank’s empty.Can you overfill AdBlue? Overfilling the AdBlue tank can be dangerous for your vehicle. This is because AdBlue is a urea-based solution, which means it is corrosive and can damage your vehicle’s components if spilled.
Why is the AdBlue warning light on but the tank is full?
AdBlue pump issue: The AdBlue pump may be malfunctioning, causing the system to not be able to pump AdBlue into the exhaust system. AdBlue system error: There could be an error in the AdBlue system itself, causing it to not recognize that the tank has been filled. AdBlue injector issue: The AdBlue injector may be clogged or damaged, causing the system to not be able to properly inject AdBlue into the exhaust system. AdBlue pump issue: The AdBlue pump may be malfunctioning, causing the system to not be able to pump AdBlue into the exhaust system.
How do you reset the AdBlue warning on a VW?
Fill the tank with the appropriate amount of AdBlue indicated on the vehicle. Switch on the ignition (without starting the engine) and wait about 30 seconds. Switch off the ignition and wait another 30 seconds. Start the engine to check if the warning light has been reset. 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 won’t my AdBlue sensor reset?
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. A check engine light may reset automatically after 10-30 miles if the issue is resolved and no new problems are detected.