F-150

Holas to everyone ... I tell you

I have an Ford F-150 with problems in the address ..
The fault is the siginde when I start the truck
, a light on the dashboard that is a car is being spared
and tells me Advanced trac ... what happens is that the direction can be hard as
if it were mechanics ... but if I stop I will come back and turn to the light and the direction is tough again ... this failure is not due if someone save something, commenting is appreciated beforehand