My IS220d smokes really heavily for approx 10 seconds a few times a day,its is very embarrasing and seems to be after i have been idling in traffic then accelerate away,i have had it to lexus newcastle,who surprise,surprise say they have never ever had this fault,it is booked in to stay with them for 2 days in january,does anyone else have this problem please help,only had the car 1 week and not what i expected of a lexus.