I've had my '11 CS for 4 weeks now. Unfortunately I have had it in twice because a warning light has come on saying that "the oil level is above maximum." Last time they said it was a software issue, and "fixed" that. They checked the oil level and said that it was good. It stayed off for about 4 days, then came back again. I took it in again today, and they said that they were going to try to replace the sensor, as well as drain the oil, check how much there is, and replace it. Has anyone else had any problem with this?