Hi, I have recently had a warning light come up on the dash of my 2003 holden vectra, and its not listed in the owners manual/guide, so I cant work out what is wrong. The car itself is running great. Tends to come up more so when the car is not hot. Its an exclamation mark with what looks like a key hole shape around the exclamation mark, in a large circle? I have just put new oil and battery in the car. Can you please confirm if its the warning light to advise me to take it to a holden dealership to be looked at?