Well really these type of service light indicators are basically designed to light up within the regular mileage or time periods of the manufactures suggested maintences. So really unless the previous owner or owners have gone by the light to remind them of that it's an oil change time or regular maintanence time it's kind of useless now to go by unless you start doing the service lights suggested servicing one at time and keeping to it. All you need to do is either get a service manual or perhaps the owners manual might tell you what each code been indicated by the rappid flashes of the light. What I strongly recommend even if the vehicle is bought certified etc is to go over all the vehicle and especially make sure all the basic repairs or work is performed on it like oil changed , gas filter , basic tune up , check the tires and the air pressure, balancing of the wheels ,front end inspection, a full 4 wheel alignment ,change the transmission fluid and filter,check all the belts ,check the timing, lube the front end , check all the hose, gas lines , look for any leaks ,change the coolant , thermostat , check the pullleys and water pump, rad, treat the gas system on it, clean and lube the throttle body etc, check PCV valve ,check or change the air filter, test the engine compression and gas pressure, change any gas regulator or pressure valves, over haul the charging system, lube the doors and locking systems ,under coat the vehicle, keep a steady eye on the gages, etc. Example watch and see where the temperature gage sits at once cold then at a warmed idling , then once driven a couple of hrs , then when it's driven over 4 to 6 hrs etc. Hope that helps and best of luck.By the way I'd truly recommend that if at all possible spend the extra cash and get a reliable unbios mechanics opinion from a full safety certification inspection.