This symbol means tire pressure is low. It doesn't say 'TIRES LOW' because car mfgs want you to take it into the dealership to figure out.pic.twitter.com/SAnE25G4CH
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
100+ languages, there are many types of warnings, display must be CHEAP, icons must be universal so any mechanic can diagnose them anywhere
So yes the tradeoffs are in favor of an icon from any way you look at it. More expensive cars do also say "check tire pressure" in addition
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.