Just wanted to share my experience:
Have two DS4s since launch. A few weeks ago one the sticks started showing this issue. Called Sony, was told to take the producto to a Sony Shop, they received it and since it was under warranty, they gave me a new one a week later.
They did tell me that the warranty of the DS4 that I bought separately was 3 months, and the one that came with the system was for 1 year. I thought that was weird but filed the replacement for "the one that came with the system" to avoid any problems.
Have two DS4s since launch. A few weeks ago one the sticks started showing this issue. Called Sony, was told to take the producto to a Sony Shop, they received it and since it was under warranty, they gave me a new one a week later.
They did tell me that the warranty of the DS4 that I bought separately was 3 months, and the one that came with the system was for 1 year. I thought that was weird but filed the replacement for "the one that came with the system" to avoid any problems.