If your car has a service light and a oil degradation light then your car will have a DPF fitted. Your ECU will have to check the condition of the oil in the engine when a DPF filter is fitted in the exhaust, so when this light comes on in the dash a oil change is required. This is separate from the service interval.
b4tFN9. 327 385 22 166 242 214 173 345 460