Car Questions
RepairPal is your advocate for car care advice and guidance

Fail safe mode light

(2005 Ford Five Hundred)
in DeRidder, LA on January 04, 2011
what causes fail safe mode light to come on every mile or so and completely shut the engine off?
Displaying 2 answers & 0 comments
Popular Answer
on January 04, 2011
usally has to do with fly by wire system which replaces the old cable style. when there is a malfunction, the light comes on and the vehicle returns to dile with a slight increase to at least keep you moving to the side of the road.
you say it shuts off completely?? it should not but there may be a couple of issues here.

on January 04, 2011
As Roy said, electronic throttle body concerns are fairly common for this first attempt at drive-by-wire in a Ford car (Ford Diesel Trucks have been using drive by wire for a while). Throttle position sensors are at issue, and the ETB itself. They had a back order on replacement parts for months back in 2009 on these.
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
My engine power reduction light have come on several times. Im trying to narrow down the problem so I wont have to sp...
will sometimes go into limp mode and this light comes on
Didn't find what you were looking for?