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Old 09-15-2018, 06:02 PM   #1
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Power steering assist fault

I have a 2014 ford focus. I was driving and all of a sudden the power steering locked up and it was difficult to turn the wheel. The message Power steering assist fault came on. I parked the car and turned it off. I went back out and the warning was off and the steering was fine. It's the weekend and drive 100 miles a day for work. Not sure what to do now since steering is fine now


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Old 09-18-2018, 07:15 PM   #2
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You'll end up needing a new electronic power steering rack....or front tires. One of the two...maybe both...
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Old 09-20-2018, 06:27 PM   #3
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I totally disagree---I've posted this issue before--apparently the main junction wires cause this to happen--my trans has been out for clutch packs--a diligent tech told me the fit is tight & causes connections problems---Id go there first before replacing unnecessary parts---I think this should be a recall along with the trans & horn-& AC -all electrical issues--
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Old 09-20-2018, 07:15 PM   #4
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I totally disagree---I've posted this issue before--apparently the main junction wires cause this to happen--my trans has been out for clutch packs--a diligent tech told me the fit is tight & causes connections problems---Id go there first before replacing unnecessary parts---I think this should be a recall along with the trans & horn-& AC -all electrical issues--
You're free to disagree. However, I didn't tell him to replace anything. He needs to see if the issue reoccurs and if so, he needs to find out what code is being set when the issue occurs. For some people, it's a 1 time occurrence. For others, it's a repeating problem.

Issues with the wiring harness and horn are not as wide spread as you think. Problems with the transmission are not electrical. They're software and design. Tom has explained the software issues numerous times. As a former Ford technician, I have experience with Focus and Fiesta clutch replacement. I also have experience with the electronic power steering system on these cars. Clutch problems aside, forums make issues appear more widespread than they really are. Those that have issues with the harness, tend to ignore the problem until the power steering control module finally fails. Since 2012, I only know of 3 Focus customers that showed up complaining about horn problems. In the case of 2, there were 2 faulty horns as a result of an accident and 1 broken horn connector. The other never came back because she was told it would take more than 30 minutes to diagnose since she could only bring the car in at lunch time when nobody was available to look at it.

There is no reason to issue a recall for a problem that only affects a small fraction of vehicle owners. If these issues affected a considerable number of owners, Ford would have been forced to issue a recall.

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Old 12-20-2018, 10:38 PM   #5
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You'll end up needing a new electronic power steering rack....or front tires. One of the two...maybe both...
Why would a power steering failure cause front tires to wear out?
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Old 12-21-2018, 08:21 AM   #6
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Why would a power steering failure cause front tires to wear out?
Actually, it's the other way around. Worn front tires can cause a power steering assist failure message due to (supposed) increased friction between the tires and road surface.
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Old 12-23-2018, 02:58 AM   #7
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That makes it sound like our power steering is pretty fragile.

sykozis, do you know whether any damage can be done to the steering rack or control unit by driving the car with either of the two fuses for the power steering (or both) removed?
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Old 02-28-2019, 06:05 PM   #8
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My '14 SE 5-speed is giving me this fault message, except the car won't crank over at all. The battery is about a year old, all electrical works perfectly (lights, stereo, windows, door locks, HVAC), but the car will not attempt to start whatsoever.

I last drove the car Monday night, 2/25, and the next morning I went out to start it to leave for work and it gave one small crank and then nothing. Every attempt to start the car since has been the same: "steering assist fault", and no attempts at cranking over.

I looked in the fuse panel in the engine bay and all the fuses appear fine, but just in case, I swapped the starter fuse with a good one from another feature and nothing happened. Same thing with the big starter relay: swapped it with one I knew was still good from a working feature, and nothing still.

It's too damn cold for me to stay out and mess with the car long to diagnose anything in or under the engine bay, and I can't get the car into the garage to get it on stands to get underneath it because it's parked in the driveway which is at a decent incline, so it's not like the car could be pushed into the garage.

Thankfully I have other vehicles to drive in the meantime, but my Focus is my work commuter (80 miles round trip per day) so I'd really like to get it sorted ASAP. However, I really dd NOT want to piss the money away on a tow and shop diagnosis (if they even CAN diagnose anything) if it's something I can do myself (I'm handy with a wrench and have no problem replacing any parts, but tracking down electrical problems is my worst nightmare and this car has so many goddamn electrical systems and contact points that could be the culprit).

What do you think? It's a manual 2014 with 115k miles, the battery is an OEM Ford battery and only one year old, and everything electrical works perfectly, but the car will not attempt to start at all, throws the "steering assist fault" message each time the key is first put in to start, and it showed no signs of starting or steering issues at all leading up to the morning I tried to start it.
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Old 03-13-2019, 05:49 PM   #9
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I again think its all related to the main POWER CONTROL MODULE --it has issues in the junction connection of some -corrodes -- ( they will try & sell you needless parts) I hope this helps
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Old 06-08-2019, 12:08 PM   #10
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Same problem here with a 16 SE. Did you get it fixed?
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