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

Why Is the AdBlue Warning Light On in a Citroen C4 Cactus?

Model: Citroen Cactus MK 1 - Years 2014-2020
Part: AdBlue warning light

If the AdBlue warning light has illuminated on the dashboard of your Citroen C4 Cactus, it means that the emissions fluid has reached a too low level and needs to be topped up. This is an extremely simple and quick operation; let's see how to proceed in this tutorial. First, obtain a 10-litre canister of fluid, then turn off the engine, open the boot lid, and remove both the floor panel and the spare wheel. Next, unscrew the large central cap, insert the canister's nozzle into the opening, and pour the necessary amount of fluid into the tank.

Updated on 4 September 2026 by ScegliAuto

Video tutorial

Related tutorials

How to remove the AdBlue warning light on the Citroen C4 Cactus?
How to remove the AdBlue warning light on the Citroen C4 Cactus?
Citroen Cactus (2014-2020 / MK 1) If the AdBlue warning light has illuminated on the dashboard of your Citroen C4 Cactus, it means that the fluid in the emissions system needs to be t…
How to Reset the AdBlue Light on a Citroën C4 Cactus?
How to Reset the AdBlue Light on a Citroën C4 Cactus?
Citroen Cactus (2014-2020 / MK 1) To reset the AdBlue light on a Citroën C4 Cactus, first top up the additive liquid in the designated tank, which is vented next to the fuel tank. Aft…
How to reset the AdBlue warning light in the Citroen C4 Cactus?
How to reset the AdBlue warning light in the Citroen C4 Cactus?
Citroen Cactus (2014-2020 / MK 1) If the AdBlue warning light has come on in the instrument panel of our Citroen C4 Cactus, it means that the fluid in the pollution control system has…

Other guides you may be interested in

How to Open the Bonnet on the Lancia Y

To open the bonnet on this vehicle, follow these simple instructions: first, open the driver's door and locate the lever positioned just below the dashboard, marked with an image of the vehicle with the bonnet open. Pull this lever towards you until you hear a "click" indicating the bonnet is released. Next, exit the cabin and stand in front of the bonnet to disengage the safety catch and complete the opening. To do this, slightly lift the bonnet, locate the yellow lever underneath, and pull it to the left to fully release and open the bonnet.

Watch the video!


by ScegliAuto

More videos