Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How do you reset the AdBlue warning light on the Audi A4?

Model: Audi A4 B9 - Years 2014-2024
Part: AdBlue warning light

When the AdBlue warning light appears on the instrument panel of the Audi A4, it means that a generic problem has occurred in the emissions reduction system that is present in diesel engine cars: first of all, it will be necessary to ensure that the additional fluid is sufficient inside the system. If the fluid has been topped up correctly, it will be necessary to check for damage to the AdBlue injectors or any leaks; the problem could also involve certain sensors in the system that may need to be replaced to solve the issue.

Posted on 5 November 2025 by ScegliAuto

Video tutorial

Related tutorials

How do you reset the AdBlue warning light on the Audi A4?
How do you reset the AdBlue warning light on the Audi A4?
Audi A4 (2007-2016 / B8) In order to reset the AdBlue warning light on the Audi A4, you need to open the fuel filler flap, located on the rear right side of the vehicle: here…
How to Reset the AdBlue Warning Light on the Audi A4?
How to Reset the AdBlue Warning Light on the Audi A4?
Audi A4 (2014-2024 / B9) To reset the AdBlue warning light on the Audi A4, you need to refill the additive fluid by pouring it into the designated tank. After obtaining a flu…
Resetting the AdBlue Warning Light on the Audi A4
Resetting the AdBlue Warning Light on the Audi A4
Audi A4 (2014-2024 / B9) This guide will show you how to reset the AdBlue refill warning light on the Audi A4. First, ensure you have actually refilled the AdBlue; then use t…

Other guides you may be interested in

How to Bleed the Clutch on a Renault Clio?

To bleed the clutch on a Renault Clio, open the bonnet to access the components located in the engine bay: here, you will need to undo the screws that secure the battery in its housing, the intake manifold, and the coolant reservoir. This will allow you to locate the pipe through which the brake fluid flows: by inserting the other end of the pipe into a container, you can press the clutch pedal to expel all the fluid until it fills the container.

Watch the video!


by ScegliAuto

More videos