Toyota will NOT cover it. Cosmetic damages are not covered by the 12 month warranty. Everything MECHANICAL (such as battery, alternator, engine) is covered. Body panels, mirrors, scratches...usually not covered.
However, if you talk to the agent you bought the car from, they might be nice and repair it for you free of charge since the car was "certified used" and newly bought by you.
If not, file a compliant. Tell them you want to speak to their service manager if they say no.
www.toyotacertified.com