2014 LSD engages itself any time the temp drops below 30 degrees whether the switch is in the on or off position. I can only get it to disengage once I increase my speed over 20 MPH. This causes a lot of jumping and chirping of the tires. Is there a way to disable this function??

 

LSD does not have a switch. Which system do you have?

 

He's got to be talking about the e-locker.

First pull whatever fuse powers it, and see if it's in the switch.

Then go from there.

 

The locker.

Same issue no resolution:
https://www.f150forum.com/f102/elect...eather-461949/

A commenter replaced the switch and that fixed his issue:
https://www.f150ecoboost.net/threads...ial-lock.2548/