Question about 2003 Mercury Mountaineer

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Where does the transmission fluid go in a 2003 mercury mountainee

Please tell me where to put the fluid. there is a med. size cylinder that does not have a label on it, but the fluid inside is low, is that where the fluid goes

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  • tcchatman Dec 02, 2008

    There is not a dipstick, in most cars the transmission dipstick has a red top, there is no red topped dipstick....i know that the yellow topped dipstick is for the oil but i have looked and looked for the red topped dipstick and cant find it....

  • yadayada
    yadayada May 11, 2010

    Trans fluid goes down a long tube to the trans, do not put fluid in the cylinder you mentioned

  • Joe Hills
    Joe Hills Jan 16, 2014

    thier is no long tube theirs a plug on the side of the trans case u have to put the fluid in that no trans dipstick on the mounainer

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Nope there is no dipstick, to put fluid in, you have to take out the inner drain plug, if you look on the trans pan you will see a drain plug with either a torx or allen head plug in the middle, take this out with the engine running and at normal temperature, dont worry fluid will not come pouring out (there is a standpipe that goes up into the trans) to add fluid you need to squirt it up through this hole with a tube or whatever you can find that works, when it is full you will have a steady drip from the plug, thats the only way to do it. hope this helps

Posted on Dec 02, 2008

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I have recently changed and added fluid to my 2003 Mercury Mountaineer with help from a Chilton manual. None of the answers posted so far are quite correct...and since I researched this for months before finding a proper solution I figured I would let everyone know how to do this.

Tools needed: Mercon V trans fluid, torx head socket to remove trans drain/add plug, an adjustable wrench to loosen the main bolt on the drain/add plug, a pump to add fluid back in, and (if possible) a temp gun like a service station would use. Last, but not least, you will need a special nozel that fits in the bottom of the drain hole to add fluid back in with. (I could only find this at OReilly's. It was a special order from 'OTC' <OTC Part No. 6604>

In my opinion this is a terribly designed transmission. To add, remove, or check fluid follow these steps:

1. Heat fluid to 180 degrees F.
2. Raise entire vehicle using a level to make sure the vehicle is completely level.
3. With foot on break, shift through all gears, place back in park.
4. Go under transmission pan, and by using torx head socket (and PB blaster or you'll break the socket), Loosen the middle plug on the main trans drain plug. (There is a larger bolt head on the drain plug with a smaller plug inside it)
5. Replace center plug with OTC part No 6604.
6. Loosen, (but not all the way) the main bolt plug.
7. Now, this will tell you your fluid level. (Per Chiltons manual: If fluid pours out your trans is overfilled. If fluid drips out the level is ok. If no fluid comes out, add and repeat until you get a slow drip, indicating the proper level.
7B. If you need to add fluid, at this point you would use the pump. They make plunger pumps for differentials that are supposed to work well, but I used a simple $3.99 bulb pump just fine.
8. When level is correct, tighten main bolt.
9. Remove OTC No. 6604
10. Replace center plug with torx head socket.

That sounds complicated but it's not bad once you have what you need. The BIG problem is that this IS a sealed trans. Ok for BMWs...not so good on a Ford products! SO, if your fluid level begins to become inconsistent be vigilant. Because there is likely an underlying problem causing this.

Temp Gun Note: The temp gun is to make sure your fluid is at 180 degrees. However, Chilton reports that this is about where it would be after driving around the block a couple times. Since I'm not a pro, and don't have one, I did the latter and it worked fine.

HOPE THIS HELPS!!! This was a ****** for me to research, but my Mountaineer runs fine (relatively speaking :) and I know very little about fixing cars. Just researched it till I found the correct fix.

Peace, and good luck!

Posted on May 01, 2011

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I looked this up, the transmission is sealed, there is no dipstick.

Posted on Dec 02, 2008

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Transmission fluid goes into the tube that contains the dipstick to check the transmission fluid.

You may be looking at the power steering reservoir. If so you can put transmission fluid in it. The power steering reservoir is usually in the middle of the engine.

However, you need to make sure you are not looking at the brake fluid container. DO NOT put transmission fluid in it. The brake fluid reservoir is usually all the way in the back of the engine compartment on the driver's side.

Posted on Dec 02, 2008

  • Wayne Mineard
    Wayne Mineard Dec 02, 2008

    Look all the way back toward the back of the engine compartment. They are well hidden in some vehicles.

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