The orange wrench can be set my lots of things. Sometimes caused because at the PDI, something so simple as the Tech set the mileage for tire rotation way too low. And as noted above, so easily re-set.
However, if one does not know the cause, re-setting and forgetting is not prudent, i.e., as arathol noted, take it to you dealer if you do not know what caused it and can easily re-set that erroneous parameter.
Yes, if you don't know why the light is on take it to the dealer, but don't get taken by the dealer either. There are unscrupulous people out there who will set the light to come on unnecessarily, then try to convince you do have some unneeded "service" done.
Thanks for the replies, and you were all correct. The tire rotation was set ridiculously low in the app, so I just re-set it and the light went away. A friend with a '17 3 told me about it, but in the meantime I had called the dealer and they just told me to come in without explaining the app settings. Shouldn't they have given me that info over the phone? I think the tire setting maybe got thrown when I replaced the OEMs with Goodrich G-Force Comp 2 A/S's, so now I'm not slipping all over the road. Anyone want my originals?