I do not have an owners manual for my 89 Supra. Today while testing driving to see if the cruise control worked after rerouting some vaccum line (it does work now thank you) there was an indicator light that flashed occasionally. It is located just to the left of the temperature gauge and it appears to be in the shape of a filter. Since I do not have that owners manual, I am unable to define the meaning of that indicator. I apologize for all the recent questions but I am still learning my MKIII.:icon_conf