How to change transmission fluid in a 2006 ford f150 5.4 xlt

SOURCE: 2006 Ford Explorer XLT the Blower Fan only works on 4 and 3 Sp

Look under the dash on passenger side and just to the left of the blower motor housing you will see the 4WD control module.Remove the 2 screws holding the module and let it hang down and your resistors are behind this.Remove the 2 screws holding the resistors and remove.
Now I am assuming you have manual climate control and not electonic.

SOURCE: 05 Ford Explorer Transmission

on the bottom of the transmission pan you will find a nut with a hex or torx in the middle you remove the center plug when the truck is hot and running on a level serface the trans fluod will dribble out if it does not dribble out it is low if it runs out fast a steedy streem it is over full now their is a part that screws into this for a fill if you remove the pan you will see how it works the pan has a pipe/ stack that when full of fluid the top of the pipe is at the full point if you remove the large nut the stack and plug will come out the best way to change the trans fluid is take it to some place that has a fluid exchange equment this will get all the fluid out including the torque converter

SOURCE: do I need to change transmission fluid on my 2005 ford freestyle

The high pressure filter and fluid are supposed to be changed at 60k intervals. Ford has a very specific oil for this transmission and the service fee will be $300 to $450 - mine was around $420.

No other car place will touch the CVS transmission in a Ford Freestyle and most Ford dealerships are clueless on thier maintenance and repairs. On most issues that crop up the first thing they want to do is swap it out - for $4000+.

SOURCE: Location of Speed Sensor 1998 Ford Explorer XLT

polarcycle is right but there is a speed sensor on the drivers side top of the trans. toward the tail shaft or transfer case. there is as well a sensor inside the trans. itself that is mounted on the web. behind the overdrive band and drum.

SOURCE: 2002 Ford Escape XLT OD light blinking - am told

The Trans fluid should be changed every 30,000 miles or two years.
Changing any fluid on a vehicle is never a fix for anything,just preventative maintenance.
You should have done the Power Steering Fluid, Trans Fluid,Brake Fluid,Etc a couple of times,before getting to 80K.

Also I would hope you changed the spark plugs buy at least 60K.

You may have a TCC Solenoid going bad,but the engages the torque converter clutch.

Is it shifting into OD? Most likely you have a solenoid issue,but need to find out which one. Most fords have a solenoid pack in the trans,with all of them in one unit. Not sure on yours.

The only way it will be expensive, is if you go to a dealer or get pitched some story by a shop, not able to diagnose, what is most likely a simple fix.