I'm about to scheduled the 120K mile maintenance which is the recommended tune-up for my 2009 Venza AWD. The dealer is also recommending fuel injection treatment (clean-up). I have it one before around 60K. Is it necessary?
Injector cleaning in not necessary as a standard maintenance procedure. If your are experiencing rough idle and/or very poor gas mileage you can consider it. It may help. I have never had this service done and don't ever expect to have it. Buy gas from any reputable supplier and you should never need this service -period.
-TM-