My 2010 Prius is almost one year old and the plastic airbag cover in the center of the steering wheel has developed a depression around where the airbag is contained. It's only a cosmetic issue but it wasn't there when I bought the car and has gradually developed and become worse over the past year. I recently rented a 2010 Prius with about 15k miles and it did not have this problem. Does anyone else have this problem and have you brought it to the attention of Toyota or had it repaired?
I agree with Stream, take it in. Be prepared to tell them "no I didn't do it" because they may try to blame it on you.