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Locking rear diff icon comes on

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Old Nov 7, 2017 | 07:46 PM
  #1  
big mule's Avatar
big mule
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Locking rear diff icon comes on

Hello everyone, for the last 2 weeks every morning when I first start my truck the rear locking diff light is on and sometimes it is even engaged. The **** is pushed in, and in the off position.

Does anyone have any idea of what is causing this? Thanks.

My truck is a 2013 4x4 3.55 rear end with the 5.0 and 90k miles.
 
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Old Nov 7, 2017 | 08:45 PM
  #2  
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jdunk54nl
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Probably just a bad ****/switch. I've read a few having that issue.
 
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Old Nov 8, 2017 | 07:46 PM
  #3  
zxwut?'s Avatar
zxwut?
Fleet Mechanic
Joined: Jan 2009
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From: Fort Worth
Mine was doing that after using 4H and the locker once upon a time. It got worse to the point of being constantly locked on. The switch is plastic and had broken. I used duct tape and a stack of washers to hold the button in until I could get a new switch. They're cheap and easy to replace. I wish it cost more money and was sturdier.
 
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Old Nov 10, 2017 | 04:05 PM
  #4  
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Thanks for the help. I’m going to order a new switch.
 
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Old Nov 10, 2017 | 04:09 PM
  #5  
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big mule
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Just an update, I replaced the switch and all is good now. Thanks again for the help.
 
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