The best way to keep your 3rd generation (2011 to 2014 and probably also the 2015 model year) Toyota Sienna running reliably is to regularly change the motor oil and replace the cartridge filter in the 2GR-FE 3.5 liter V6 engine. Check out my detailed DIY tutorial for the procedure by clicking on the text link or thumbnail image below.
Toyota Sienna 3.5L V6 Engine Oil Change Guide
