This car is a 730 d Sport with 220000 miles from new (Dec 2006). It has just flagged up a yellow warning which say Emission Limit! Nothing else.
Does anyone know what has triggered this or have any clues as to what is likely to be wrong. I have a guess that it may be the Particulate Filter, but as the car has been used extensively for motorway cruising I am struggling to reconcile this.