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Have you got a registration number for the vehicle? i would also need to know if it has Gas Discharge Headlamps or Standard Lamps and also has it got Stop / Start System?
Please find attached the Wiring Diagram for the Exterior Lamps on your Vehicle. There is no Fuse for the Daytime Running Lamps. They are powered by separate Power Lines from the BCM. If you have checked the Voltage at the Lamps and at the BCM connector and there is no voltage then I would suspect the issue lies within the BCM and as such would require replacement.
BCM is Body Control Module. Pretty much everything on a modern vehicle goes through the BCM. It is shown on the wiring diagram as a Multifunction Control Module (A11). These usually need programming when replaced due to the configuration and also possibly the Immobiliser System being part of it.