We have to share a great find to keep your AC working well . Vent//Tabs makes replacement tabs for 2009-2013 Corolla air vents . When the blades/louvers become loose and aren't working properly , it's often the vent tab that needs to be replaced. The dealer will often suggest to replace the air vent for $200 , but you can do this for less than $20 yourself. Easy , no tools , 5 minutes and you'll be back in business. Check it out www.venttabs.com and Good luck