TSB ‘s (technical service bulletins) are issued when an auto manufacturer identifies an issue that does not directly affect safety. In other words, TSB ‘s generally aren’t concerning a problem that will kill you. However, that doesn’t mean they aren’t important…but as you can read in this article, the average person like you and I aren’t likely to have easy access or even be alerted to a TSB (even if we own the affected vehicle).
You are most likely on this website because your accessory meter (overhead display) has failed…and yes, Toyota issued a TSB years ago. Here’s the link, if you are interested…