Yes, get it to the dealer right away!
My MIL had the same light come on in her car last summer, and she was insanely busy at the time. She really didn't have the time to hassle with it, but luckily she made the time the next day. Two days later, an 18 yr old (traveling in the opposite direction) lost control of her vehicle while speeding on a wet road, came across three lanes of traffic, jumped the median, and hit my MIL's car on the front of her car near her door. Her airbags DID deploy :thumbsup:, her car was totaled, her hand was cut from slamming into the windshield, she broke a kneecap, and was severely bruised (especially the two lines where the seatbelt crossed her body), but she had no serious injuries. If she hadn't taken it in when she did, I'm not sure she would've lived. It's worth taking the time to get it checked out.