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4X4 not dissengaging

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Old Apr 8, 2013 | 10:35 AM
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4X4 not dissengaging

Hi just joined this forum looking for some suggestions. I have and 05 F350 4X4. I put it into 4 wheel drive high yesterday to make sure every thing was working correctly and it was so I went to 4 wheel low and that worked fine. Problem is it won't come out of 4 wheel low. I didn't try to go back to 2 wheel when I was in 4 high. Any suggestions on what to look for? The truck has the electric switch to engage 4 wheel. Thanks ahead of time for any help.
 
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Old Apr 8, 2013 | 02:25 PM
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after you turn the switch back to 2wd you need to reverse for 10-15 ft to fully disengage the front end. Try that and see if your problem is solved. If so, then it isn't a problem, just normal
 
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Old Apr 8, 2013 | 03:16 PM
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Thanks. I tried that but still stuck in 4 low. I've tried pretty much everything I can think of and what the dealer can think of so I guess it's going to the shop.
 
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Old Apr 8, 2013 | 03:32 PM
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As i remember the right sequnce is that You must engage in 4 high staying, not moving and clutch pressed, when it goes to 4 high only then You can switch it to 2wd, not tried to go from 4 low to 2wd directly and think its wrong
 
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Old Apr 8, 2013 | 04:10 PM
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greentree ford
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Check the low to high relay
 
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Old Apr 8, 2013 | 04:16 PM
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Also make sure you are on a flat level surface while switching modes.
 
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Old Apr 8, 2013 | 04:21 PM
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Originally Posted by szpieleusa
As i remember the right sequnce is that You must engage in 4 high staying, not moving and clutch pressed, when it goes to 4 high only then You can switch it to 2wd, not tried to go from 4 low to 2wd directly and think its wrong
This has nothing to do with it, you can go from 4-low to 2wd directly as long as the conditions are met. The truck has to be going less than 3 MPH in neutral with the brake applied.
 
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Old Apr 9, 2013 | 09:44 AM
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Thanks everyone for the suggestions. Ended up being the servo motor down on the transfer case.
 
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Old Apr 27, 2013 | 09:20 PM
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Originally Posted by szpieleusa
As i remember the right sequnce is that You must engage in 4 high staying, not moving and clutch pressed, when it goes to 4 high only then You can switch it to 2wd, not tried to go from 4 low to 2wd directly and think its wrong
This worked for me.
 
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Old Apr 27, 2013 | 09:26 PM
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If you read your manual, to put into 4 low you stop, put in neutral, turn the **** to 4 low and put your foot on the brake hard until you hear it engage. To get it out, do the reverse; stop, put in neutral, turn the **** to 4 wheel high, hold foot on brake until dis-engages. Once in 4 wheel high, switch to 2 wheel.
 
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Old Apr 27, 2013 | 09:31 PM
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Originally Posted by pappy19
If you read your manual, to put into 4 low you stop, put in neutral, turn the **** to 4 low and put your foot on the brake hard until you hear it engage. To get it out, do the reverse; stop, put in neutral, turn the **** to 4 wheel high, hold foot on brake until dis-engages. Once in 4 wheel high, switch to 2 wheel.
Nope, that's not right. This is from the 2008 Super Duty owner's guide:

Originally Posted by 2008 Super Duty owner's guide
Shifting from 4x4 LOW to 4x4 HIGH or 2WD
1. Bring the vehicle to a complete stop.
2. Place the gearshift in N (Neutral).
3. Move the 4x4 control to the 4x4
HIGH or 2WD position.
4. Hold the shift conditions until the
4x4 LOW indicator light shuts off.
5. If the 4x4 LOW indicator light
does not shut off within 15
seconds, allow the vehicle to move
at a speed below 5 mph (8 km/h),
then repeat steps 2 through 5 while
the vehicle is rolling before
reporting any shift concerns to your authorized dealer
It says "or", which means you can shift directly from 4-lo to 2WD without any stop in 4-hi. These modules are computer controlled, and they are smarter than you guys are giving them credit for.
 
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Old Apr 27, 2013 | 09:39 PM
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Try it with your foot on the brake hard and it shifts immediately, either way, in or out.
 
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Old Apr 28, 2013 | 09:02 AM
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It ended up being the servo motor. But thanks for the response.
 
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