2009 f150
Senior User
Joined: Sep 2004
Posts: 447
Likes: 0
From: Colorado
I have the same truck but have not had that problem.
Mine is however back in the shop for the second time with the wrench light on. Diagnositics at the dealership say nothing is mechanically wrong. Truck ran fine all the way to the dealership in fact. The computer is not receiving a signal from somewhere is what I am being told the cause is. Or the way they are putting it is "Bad communication to the computer".
Mine is however back in the shop for the second time with the wrench light on. Diagnositics at the dealership say nothing is mechanically wrong. Truck ran fine all the way to the dealership in fact. The computer is not receiving a signal from somewhere is what I am being told the cause is. Or the way they are putting it is "Bad communication to the computer".
Cargo Master
Joined: Sep 2005
Posts: 2,963
Likes: 897
From: Montana
sounds like you have a bad connection somewhere or maybe a bad rear diff. ABS sensor... I don't know if the sensor is somehow tied into the electric locker. That seems doubtful, which makes me think it is a bad connection somewhere between the rear diff and Instrument panel. Check for possibly disconnected pigtails in any wire bundles along the frame rails, blown fuses, etc. Also try auto zone... I don't know if they have a scanner for these new trucks yet, but if they do, the scanner should be able to tell you what is up, for free to boot.
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