Reverse Switch Replacement - How-To (MTX-75) - Focus Fanatics
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Old 05-22-2008, 10:35 PM   #1
jetrinka
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Reverse Switch Replacement - How-To (MTX-75)

So around a month ago my and about 5 other peoples cars had their reverse lights go out. Fuses checked out as well as bulbs so the remaining thing was the reverse switch. This is a how-to on replacing the reverse switch on your MTX-75 transmission. This how-to was done on my 2.3 Duratec.


Things you will need
Rubber Gloves
Brakleen (to clean the surround area if you would like)
Flashlight
Torque Wrench
Needlenose Pliers
Sockets w/matching ratchets
-27mm socket (if one has the VF engineering transmission mount center nut)
-22mm deep socket (reverse switch itself)
-21mm socket (stock transmission mount center nut)
-15mm deep socket (perimeter transmissoin mount nuts)
-13mm socket (battery tray nuts and bolt)
-10mm socket (battery terminal nuts)
-8mm socket (cruise control module retaining bolts)
-Any other socket that might be needed for removing things in the way such as the upper intake system and such.

-First using the 10mm socket remove the battery wires and push them aside
-Using the 13mm socket remove the bolt holding the battery retaining plate down
-Remove plate
-Remove battery from car


-Using the 13mm socket remove the three bolts pictured below and remove the battery tray





-This is what it should like when removed. Keep in mind I have the VF Engineering tranny mount.



-Here is what the stock mount will look like if you are stock



-Using a floor jack and a block of wood (to cushion the tranmission) take pressure off the transmission mount by jacking up ever so slightly under the transmission

-Using the 15mm deep socket remove the perimeter transmission mount nuts



-Using the 21mm (if stock mount) or 27mm (if VF) sockets remove the center mount bolt and remove the entire mount.



-Remove the three bolts pictured here. There are two 8mm bolts going into the cruise control module and one 13mm bolt going into the fender of the car




-Using the 13mm socket remove the pictured bolt that is mounted to the shock tower area.



-Using the needlenose pliers crunch that wire holder and push it down through its hole.



-Push that tranny mount tray out of the way so you can access the top of the transmission



-Here is a picture of the new reverse switch. (friggin 40 bucks from the stealer)



-See the old one way down there??




-Unclip its electrical connector

-Using the 22mm deep socket remove the reverse switch.



-Old vs New



-You will notice the switch does not have very much thread on it. So it doesn't take much to snug it down. Tighten it down. Snug but not tight at all. Do NOT reef on it.

-All in
-Now is also a good time to clean any of the grime outta there using the cleaner you bought. Don't get it in the electrical connector though.




-Putting it all back together is the reverse of taking it apart. With a few new things.

-Torque settings for the transmission mounts.
-Perimeter nuts on mount = 35 ft lbs
-Center nut on mount = 65-70 ft lbs

-Before the procedure


-And AFTER!!!



And all your reverse lights woes are solved.

Edit: From the battery being unplugged for a long time the car will idle funny for a little bit. Sometimes as much as 1/2 hour afterwards while driving. This is normal and just the car re-learning its idle.



Last edited by jetrinka; 05-23-2008 at 08:28 AM.
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Old 05-22-2008, 11:40 PM   #2
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Nice work man.

1 question though, isn't that actually an IB5?
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Old 05-23-2008, 12:13 AM   #3
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i had the same problem for a while but when my mechanic did my clutch it has had no problem since if it does i have this great how to. thanks
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Old 05-23-2008, 12:35 AM   #4
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Ib5 = ?

Ah a transmission.
And no I am almost positive its the MTX-75

Edit:
I read one main difference between the two trannys is the IB has no drain plugs. I know mine does.
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Old 05-23-2008, 12:56 AM   #5
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Quote:
Originally Posted by jetrinka View Post
Ib5 = ?

Ah a transmission.
And no I am almost positive its the MTX-75

Edit:
I read one main difference between the two trannys is the IB has no drain plugs. I know mine does.
As far as I know, the IB5 is SPI only...mtx for zetec and duratec.
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Old 05-23-2008, 01:14 AM   #6
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Yes this was my impression as well.
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Old 05-23-2008, 05:03 PM   #7
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Ah I found the info I wanted. Ya, mtx75. The linkage and counter weight is different on the '02.5 and up. That's what was throwing me off.
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Old 05-23-2008, 06:35 PM   #8
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Man I forgot how nice it is to have reverse lights. I got so tired of being so darn careful while backing up cause no one had the heads up that I was in reverse.
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Old 05-26-2008, 08:41 AM   #9
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Added to the 'HOW TO ARCHIVE'...........
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Old 07-05-2008, 07:11 PM   #10
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how do you do it on an SPI? sisters car, sold the zetec back in like 06 thus me not coming around :D anyway... it looks different from the switch they have. so I'm guessing it could be different to do? eh, suppose they should get it done professionally or look for a chilton or something.... but any help would be appriciated! thanks,

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