Power steering fault light comes on after advancetrac light goes off
My car has 88900 miles.
My car has an automatic transmission.
As you may know your vehicle is equipped with electronic power steering which is very different from the traditional hydraulic power steering systems we have known for decades. As you can imagine, electronic power steering is an advancement in vehicle technology and serves to increase fuel economy. An EPS system provides up to a 2% increase in fuel economy over the conventional system. Another benefit of having an electric steering system is that it eliminates the use of hoses and fluid, therefore eliminating power steering leaks as well as a reduction in weight. To provide steering assistance, an electric motor mounted to the side of the rack housing drives a ball-screw mechanism via a toothed rubber belt. The screw engages a spiral cut in the outside of the steering rack. A torque sensor attached to the pinion shaft signals a control computer when to provide assistance. There are a number of things that can fail with the electronics involved in this kind of a system. I would suggest having a professional from YourMechanic come to your location to take a look at your power steering system.
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If your vehicle is stuck in the snow or mud, turning off the system will allow the wheels to keep spinning and apply full engine power to the wheels.
All-new engines became available, including the twin-turbo 3.5-liter EcoBoost V6, 3.7-liter V6, 5.0-liter V8, and 6.2-liter V8.
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As you may know your vehicle is equipped with electronic power steering which is very different from the traditional hydraulic power steering systems we have known for decades. As you can imagine, electronic power steering is an advancement in vehicle technology and serves to increase fuel economy. An EPS system provides up to a 2% increase in fuel economy over the conventional system. Another benefit of having an electric steering system is that it eliminates the use of hoses and fluid, therefore eliminating power steering leaks as well as a reduction in weight. To provide steering assistance, an electric motor mounted to the side of the rack housing drives a ball-screw mechanism via a toothed rubber belt. The screw engages a spiral cut in the outside of the steering rack. A torque sensor attached to the pinion shaft signals a control computer when to provide assistance. There are a number of things that can fail with the electronics involved in this kind of a system. I would suggest having a professional from YourMechanic come to your location to take a look at your power steering system.
As a technician, I have access to reports from technicians across the country. I could not find any reports of this problem, so diagnosing this will require an experienced tech as this is not a common problem. In addition, this happens at intermittent times making it difficult to recreate. The most challenging part of this diagnosis will be recreating the symptom. I suspect it has something to do with the brake switch circuitry because it only seems to happen when you have your foot on the brake. I would begin my diagnosis there with a wiring diagram and test light in hand. The brake switch, instrument cluster, and environmental controls all interact with each other. Something is crossed either because of a failed module or damaged wiring in a harness.
Aside from making sure the coolant is full, this will not likely leave you on the side of the road. If you take it in to be diagnosed, be prepared for them to spend more time than usual to figure it out. Since it isn’t a key problem, you may need to live with it until it completely fails making it much easier to diagnose. Either way, I do recommend having a certified mechanic diagnose the warning light to make sure there isn’t anything serious going on.
Good luck.