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How to Change the Cerium Bag on a Peugeot 208

Model: Peugeot 208 A9, MK 1 - Years 2012-2019
Part: Checks and maintenance

This video demonstrates that replenishing the diesel additive tank on the Peugeot 1st series is not straightforward. The additive, known as 'cerium', is found in a bag located under the vehicle, in a container that must be unscrewed from its housing, then removed and completely replaced, not just refilled. These bags are readily available on e-commerce sites, such as recar-autoricambi.myshopify.com, by searching for 'cerium for PSA group'. It costs £139.00 with free delivery. Once the bag is changed, you will need to reset the instrument panel, which is also not simple. The YouTuber in the video does this with a tester, so you may need to do it via the EOBD socket and an OBD11 module to clear the error P15B3.

Updated on 30 August 2026 by ScegliAuto

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How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

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