I collected my new 182 yesterday, the service light came on 3 times, twice after driving through deep puddles. Each time I switched the ignition off and on again and the service light went out and stayed out. The handbook suggests to check the oil, mines OK. It hasnt come on today.
Overall its a wonderful little car, even when you dont push it because its new. I love it. The only downside is it had 145 miles on it when I picked it up, despite the dealer originally saying 6 miles is typical.