Free repair guides for Citroën vehicles including C4 PureTech wet belt, service reset, and DS3 pollen filter.
Cracked wet belt causing blocked oil strainer and low oil pressure. Also applies to Peugeot, Vauxhall & DS 1.2 engines.
Press-and-hold button method with ignition countdown. Same procedure works on most modern Citroen and Peugeot models.
Engine bay access behind a cover. Two-part filter system — a smaller section and a larger main filter. Both must be replaced.