If there are no lights still on, and the engine is running ok etc, it may have just been a one off glitch.
If you want peace of mind, I would take the car to a dealer or indy, as suggested above. It's the only way to be sure.
Little faults like this really annoy me. Might be nothing to worry about, but are still a PITA, and will leave you wondering what the issue was until you've parted with £££ to find out.
Hope it's nothing major. I had the DSC and Brake lights come on a while back, turned out to be a wheel rotation sensor... Not a big spend to fix it, but still annoying.