As an update to the Canon Rebel T4i service notice last month, the US Consumer Product Safety Commission has announced a recall for certain serial numbers of the Canon Rebel T4i. Also note that Canon has just issued an update to its previous service notice for additional serial numbers that were not initially reported as affected units.
From Canon:
We have added new serial numbers to our system since this Product Advisory was first posted on July 13, 2012. Please enter the serial number of your camera on our website, following the directions below, to determine if your camera needs to be returned to Canon USA for repair. Because the website has been updated, even if you checked your serial number on our website prior to August 1st, please check it again.
You can check your specific serial number here on Canon’s website.