This can be done with the code on the door. Check in the owner's manual and it will explain how this is done. If you do not have a manual respond that you don't and I will detail mine.
The 2004 Ford Explorer has a 5-speed automatic.
how to reset security system on ford explorer 2004
we recently replaced our transmission on a 2002 explorer for $2400
Cannot be diabled without removing the keyless entry module
Starting in 2002 , the Ford Explorer 4 door does not have an automatic transmission fluid dipstick
Starting with the 2002 Ford Explorer 4 door there is no automatic transmission dipstick
Turn ignition switch on ,(don't start car) for about 10 min that will disable theft system.
The 2002 and newer Ford Explorer 4 door models do not have an automatic transmission dipstick
The 2004 Mercury Mountaineer does not have an automatic transmission fluid dipstick . I know that the 2002 and newer Ford Explorer four door versions do not have a dipstick for the automatic transmission fluid level .
If it has an automatic trans there i sn't a drain plug you have to remove the pan to drain the fluid.
You can't. And it's against the law if you do.
The easiest way to fill the transmission for an automatic transmission in an explorer is to pour the atf right down the pipe that you check you fluid in the transmission with. make sure you check the level frequently so that you do not over fill.