Found this on the next page. Seems to be the information you need.
If a failure is detected in the AdvanceTrac with RSC system, the “sliding
car” icon illuminates solid in the instrument cluster message center and
will stay on. If the “sliding car” icon in the instrument cluster message
center remains on solid while the engine is running, without the
AdvanceTrac with RSC button having been pushed, have the system
serviced by an authorized dealer immediately.
--Chuck