Check your owner's manual. Most likely you are getting this message because you have reached the mileage where a service is recommended.
Coolant in most vehicles needs to be changed every 30,000 miles or so. If the temperature light is on then you may have a coolant problem.
This sounds like a maintenance reminder. You can always contact a Saab dealership and ask the service personnel what this means as well. Hope this helps.
〉 Answered on Oct 24th, 2007 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines