How do I check the transmission fluid in the 2006 4Runner?

The 2006 Toyota Tacoma has a sealed transmission and to check it You will have to go underneath the truck and find the fill plug and the drain plug. You will have to remove the fill hole and check to see if there is any fluid is available. If You can put Your finger in there and fill some fluid then it does not need any fluid. If it is bare inside the fill plug You may need to add some transmission fluid. The recommended transmission fluid F-TYPEor the truck is Dexron ViATF fluid. You can purchase the transmission fluid for approximately $5 - $10 per quart depending on the quality and brand. The transmission fluid should be changed every 100,000 miles as stated by the manufacturer.