4 x 4 Vacuum System Question
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Cross-Country
Joined: Jan 2009
Posts: 92
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4 x 4 Vacuum System Question
Can anyone here give me a quick rundown on the vacuum system for the 4x4 on a 2011 F-350?
I suspect the vacuum system isn’t engaging the hubs and I’m getting a “Check 4x4” warning light.
The front driveshaft turns but the wheels don’t drive the truck even with the rear end jacked up.
What should I check and where should I check it?
Thanks!
I suspect the vacuum system isn’t engaging the hubs and I’m getting a “Check 4x4” warning light.
The front driveshaft turns but the wheels don’t drive the truck even with the rear end jacked up.
What should I check and where should I check it?
Thanks!
Senior User
Joined: May 2016
Posts: 477
Likes: 3
You can turn the hubs to "Lock" manually to eliminate any guesses about other issues. If this works, it's likely the auto vacuum hub system not working right. This is a problem I hear often and there are multiple videos on Youtube about it.
here's a good one for you to watch:
here's a good one for you to watch:
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