TUTORIAL: How to refill or top up your AdBlue and where to find your filler cap on Citroen C4 1.6 HDI (2011-2020)

This is a short video tutorial detailing the process of filling your AdBlue tank from a Citroen C4 1.6 HDI froim 2011-2020 in just 5 simple steps.

First, you have to know that it’s time to fill your car with AdBlue when you have the message „Top up emissions additive: Starting prevented in 2,400 km” and informs us that you can drive no more than 2,400 km until emptying the AdBlue tank. But you have also the UREA light on your dashboard that also tell you that you have to refill the AdBlue tank. You’re probably wondering where the „UREA” word comes from? Well, that’s the name of a liquid solution that is part of the composition of the AdBlue or Diesel exhaust fluid (DEF).

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1. Open the trunk, take the cover out to have acces at the black cap
2. Remove the black cap pulling it out
3. Unscrew the filler cap from the AdBlue tank rotating counterclockwise and take it out
Use that small funnel to refill more easier.
4. Refill the tank with AdBlue
Be careful, when refueling with AdBlue, make sure that the liquid does not reach the painted parts of the car, as there is a danger of corrosion!
5. Put the filler cap back on th AdBlue tank, place the black cap back
Don’t forget to close the trunk.
You can check if your message „Top up emissions additive: Starting prevented in 2,400 km” from the central display and the „UREA” warning light from the dashboard has disappeared.

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