I am betting if I had this problem and I had taken my 4Runner to my local Dealers Service Dept. They would have charged me $50 or more to reset them. when many who do their own oil changing or have someone not their Toyota Dealer change it, when they hit 5K and the service engine light comes on. You can bet if you don't know the process with the odometer to reset it, and you go to your local Toyota Dealer it will cost you to get it reset. To me it's a Toyota scam to force you into your Toyota's Service Dept. want to or not