I purchased a 2010 3l ST with 65K on the clock a week ago. Had the RAA check it out at a cost of $232. Report shows no mechanical problems. Paid and took possesion and going through the owners manual and vehicle noticed Sub Tank warning light was on. Took it to Nissan dealer Southern Suburbs of Adelaide on Monday. They initially could not find reason for problem. Now they say previous owner (Govt) may have cut into electrical system to add options and altered the impeadances in circuit. St is still there under new car warranty. I will repost outcome.
Enjoy !

