My lens makes a slight rattling noise when the camera is turned on. It is giving my camera an error message which from what I have learned from the canon website could mean a large number of things. I tried a suggestion I found online that told me to clean the contacts with an eraser and that didn't help. It isn't the camera because all of my other lenses work fine. This broken lens does the same thing on my film Canon as well. I never dropped or hurt the lens in anyway to cause this to happen.

Looking closer at your description you said "from what I learned from the Canon website" I suggested getting your broken lens repaired through a Canon authorized repair depot. I realized after hitting the submit button that it is a Tamron lens and will need to go to a Tamron service facility my mistake. Another thing you said that you were on a winter walk but the lens is inside now, well all it needed was to activate once for the part to have broken. All you needed to do actually was turn it on and half depress the shutter button. I've done it myself with a 75-300 IS Canon lens mounted on a Canon EOS 3 film camera while photographing ice dunes. I couldn't believe what had just happened but it did all in a fraction of a second. Sorry to be a barrier of bad new at least your lens isn't I don't think an IS mine was and after the EOS 3 got finished twisting on it there was little left to repair :-(
I now use Canon EOS cameras with an adapter to fit Nikon manual lenses while doing my winter walk a rounds. Have a great day and have fun with your photography Looking closer at your description you said "from what I learned from the Canon website" I suggested getting your broken lens repaired through a Canon authorized repair depot. I realized after hitting the submit button that it is a Tamron lens and will need to go to a Tamron service facility my mistake. Another thing you said that you were on a winter walk but the lens is inside now, well all it needed was to activate once for the part to have broken. All you needed to do actually was turn it on and half depress the shutter button. I've done it myself with a 75-300 IS Canon lens mounted on a Canon EOS 3 film camera while photographing ice dunes. I couldn't believe what had just happened but it did all in a fraction of a second. Sorry to be a barrier of bad new at least your lens isn't I don't think an IS mine was and after the EOS 3 got finished twisting on it there was little left to repair :-(
I now use Canon EOS cameras with an adapter to fit Nikon manual lenses while doing my winter walk a rounds. Have a great day and have fun with your photography