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Cross Traffic System Fault

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2014 Ford Fusion Hybrid and am having similar problems. The cross system traffic fault appears intermittently and is more likely to come on in wet conditions however it has also appeared on dry warm days. I am sitting in a dealership now (using the free internet) and searching for a solution online because they don't appear to have a answer.

 

The service engineer read the codes from the system computer and has indicated that there were 6 different errors that occurred which may generate the "cross system traffic fault warning" so this suggests that there may be more than one fault to correct.

 

Good luck with the visit -- mine came on a few days ago, but understandably so since the rain was coming down and all sorts of road spray confusing the adaptive cruise and the BLIS, etc... but when that happens, next time my car starts back up all is fine.

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I still get these faults every so often, but they still work, so just taking it as the glitch that it is.

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Since you can duplicate the problem, does it only happen on the same road?

 

If you get a system fault message, there must be a code for it also. Did the dealer mention what code was set?

Edited by billford

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Well, guess this is another one of those, cannot reproduce, customer must be smoking something instances. I have a list of these myself after 45K miles.

 

CTA fault intermittent, no codes, cannot reproduce, but shows on VHR.

Transmission not in park when opening drivers door if there is a passenger with the second key. At least that is how I know what shows up cause it goes away before I can get in the car, yet there have been times when I open the drivers door and hear the chimes.

Regen brakes get soft, where I press on the brakes, the dash spins, yet the car doesn't slow like it should, have to press more and more until the hydraulic brakes kick in, hence low brake score. Other times the car slows aggressively on regen, just like it should, and again, no problem found.

 

Then there is then one issue I can reproduce just about every time, the regen brakes disengaging for a brief moment during a turn. Happens regardless of speed and SOC, and always when the brakes are in regen mode. Since no codes, no problem found. I notice it mostly while turning a 90* corner between 25 and 30 MPH, but have it happen under 15 MPH too, like when I turn into my driveway, and since it is gravel, it is really noticeable as the freewheeling when it disengages pushes the front tires through the gravel. Other times if the regen from above is not doing its job and I hit the turn going over 30 MPH then I wind up in the opposing lane during the turn since it lurches through the turn.

 

The last two items just started happening this past winter, the first one I noticed in December, and thought that it was related to the cold temps, the second part happened end of January, neither of these issues occurred since mile 3 on the car until I got close to the 40K mile mark.

 

 

Again, as what the OP is getting, No Problem Found! These cars are too damned complicated now, so you need not a mechanic, but a computer specialist and electrical engineer to troubleshoot them.

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Since you can duplicate the problem, does it only happen on the same road? That is is only road I have seen it on but it is the only time we actually run over 20 miles on a single trip.

I was just thinking that there maybe something on the road that is causing a trigger, highway dividers, radio towers...

 

And I always thought that the cross traffic system is only active when the car is in reverse. But I do know that the cross traffic system shares components with the BLIS system. Confusing...

Edited by billford

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I am having the same issue with the Cross Traffic System Fault in my 2013 Fusion Energi SE. The car has spent 40 days at the dealership since February 19, 2015. The first time as for 19 days and the second time was for 21 days (and that one they delayed me bringing it in for 7 days while the talked to the Ford Hot-Line). I can reproduce the problem with regularity but the dealership has not been able to reproduce the problem (except for the day I am scheduled to pick up the car). I have told the Service Advisors how and when it happens to me but they keep testing it (overnight at a Tech or Service Advisors home) but they never do what I have explained how to reproduce the problem, so I will explain it here and hope someone from Ford will take it to heart and get this problem solved.

 

I start with a fully charged battery which gives between 17 and 22 miles of all electric driving. I drive about 4 miles to a limited access highway and then drive about 15 to 20 miles at speeds between 45 and 65 MPH. The "Fault" is always the same "Cross Traffic System Fault" with the Left Rear Sensor being displayed as the problem. The car is clean so it is not dirt on the outside of the sensor. I make this trip every other Saturday and it is very consistent (and VERY FRUSTRATING).

 

The dealership did replace the BLIS module the first time but that did not solve the problem. The second visit was a disaster. When my wife went to pick-up the car the "Wrench" immediately illuminated on the dash display when she turned the key and had to leave it at the dealership. The problem turned out to be the battery coolant pump. Each time after being told the problem was fixed the very next Saturday when I do the 40 mile trip the problem re-occurs. My wife and I are really losing faith in the card and Ford's ability to fix it correctly...

04/25/2015 Mileage 13,170...

 

If anybody from Ford is listening please find a solution, fix it or replace it.

Hi fpliptak,

 

I want to check this out further. Please send me a private message with your VIN, updated mileage, best daytime phone number, full name, and dealer name/location.

 

...Also reach out to FORD Customer Care to get a case manager assigned....

Thanks!

 

Meagan

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Well we got the car back from the dealership on Tuesday night. They were unable to reproduce the problem having had it in the shop for 8 days and driving nearly 300 miles.

 

We drove the car today on the route that has consistently shown the problem but it did not reoccur. We plan to drive the same route tomorrow and see what happens. We will also do the same route on Saturday, which has been when we have always seen the problem when we take our dog to the groomer every other Saturday.

 

I do have a Ford Customer Care case number, thanks Meagan, and we will just have to see how things progress from here.

You're more than welcome! Glad to hear everything's going well. :) I'll be around if you need me.

 

Meagan

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