I had a similar issue about a year into ownership - my front LEFT TIRE indicated low pressure, 31. All my other tires were 33-34 from the Dealer. I pumped the front tire up to like 34 ... still LOW PRESSURE on. The sticker on the inside door says (I think) 36 pressure for all tires. So after increasing all of them to 36, the indicator went off. Weird that it didn't show up as a problem for so long. Now, every time I take car to Service Dept, they set all to 36 every time.