I have the same year and model and the auxiliary heater has worked since I've had the vehicle, albeit, it was somewhat disconcerting when I first noticed it and was not aware why these plumes of blue smoke were appearing from the nearside wheel arch. However, in the last couple of weeks these diesel fumes have been finding there way inside the car, presumably through the air vents, which apart from being extremely unpleasant is not good from a health point of view. Has anybody experienced this problem and/or know what the remedy is to prevent it happening before either my wife or I become asphyxiated