Scotty, I have a 2010 Camry with 113K miles(4 cyl automatic), 2015 Tacoma with 147K miles (6 cy automatic) and a 2015 Highlander V6 with 60K miles. Changing Trans fluid seems a little involved. I was thinking of just dropping the pan (cold) changing the filter, clean the pan and replacing with the exact amount I took out. Some people say to put a jumper wire between 2 specific ports on my OBD2 plug, and get the temp up to 104 degrees then run through the gears then drop the pan again etc. What do you think?
Your process is right. Get what you can out of the pan, measure it, and pump that same amount back in again. Cycle through the gears after filling to make sure fluid is going through all channels of the valve body. If you want to change more, drive around to circulate the new fluid and repeat. Be careful to not spill any fluid so you can keep your measurements accurate. Don't jump ports on the OBDII port. That's a sure-fire way to short out and ruin your computer if you touch the wrong pins.
Change it of course, if you want it to last. That's not high miles.
Some people say to put a jumper wire between 2 specific ports on my OBD2 plug
NO! That was the procedure for checking codes on OBD 1 about 30 years ago.
I was thinking of just dropping the pan (cold) changing the filter, clean the pan and replacing with the exact amount I took out
That's all you need. I do it with warm fluid because it drains faster.
If the fluid is still really brown or burnt smelling after you change it, then do it again at your next oil change.
