Line lock not working all the sudden

[jakefed4]

Just noticed this today. My line lock option just flashes at me and I can’t use it. I attached a video of it. What could this be?

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[jakefed4]

Video

 

[tdstuart]

Could be some module having a fault causing the computer to not let you use line lock.

 

[HKusp]

Has anyone been under the hood? Maybe the dyno plug is undone or loose.

 

[SL8888]

I don't know so much about the Mustang GT, however my GT 350 will not allow you to enable the
factory installed line locks unless the oil temp is over 200 degrees.
Guessing that Ford put that parameter in so that it might give the engine a better chance of longevity

 

[GTyosh]

Installing an aftermarket radio can disable line lock.

 

[ice445]

Mine does that if the surface I'm on isn't level enough

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