I purchased a second-hand Tigra (privately) a couple of weeks ago and it has been going lovely. However, today the engine light came on and I don't know why, can anyone tell me what it represents as I have a long journey on Friday to make and I would like the car in tip-top condition. It came with no manual, and I might sound a bit thick (being a girl), but is it air cooled or water cooled? Thanks.