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Discussion Starter · #1 ·
Hi Ladys and Gents, I'm having Problems with my Focus RS 2017. With hard acceleration the AWD System ist cuttin off. Also no drive modes. And it's not happening everytime. New PTU + RTU. I did buy a new PTU and RTU fur small money but the RTU whithout the Module so I put the old module. The old RTU had some mechanical issues and also from time to time cutted of the AWD as well. But anyway - Iv'e scaned the car and diagnostics say that there is a Problem with the AWD Module. To be precise it's showing a code: U3000:92-2C. So I ordered a now module from ford. The price is not so high. So my question is: does someone know is it possible to change the module whidout taking the RDU out ? I usualy do what I can muself by every my car, (as I changed the RTU and PTU myself). Other thing is: does it need programing of flashing ? I want preserve this car becouse I love a fast Ford :) thx in advance for help. The guys from ford service don't know much about this car so it's better to hear from you all :)
 

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I was thinking you weren't supposed to change the rear drive unit (RDU) out without changing the module because the modules are calibrated to the RDU they were delivered with. I think if you replace the module you have to be able to pull the settings from your old module and then push them into the new unit, I believe they call it an inhale-exhale process. If your old module is not working enough to get the settings and if there's no other ways of getting the settings for that rear drive unit, from some tag on it or something that can be manually loaded to a module I think you have to replace the RDU and module as an assembly again. Again there may be some way that they can see what calibration needs to be loaded to the rear module if they do just the RDU system.

What I do know you can't just swap the rear driving without doing some calibration changes on the rear module (perhaps getting the module with the rear unit if you can't load calibrations without doing an inhale-exhale) so if that wasn't done the rear module may be very confused by the reactions it's getting from the RDU to the inputs it's giving it because it's potentially out of specs from what the loaded calibration of the module is.
 

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Discussion Starter · #3 ·
Well I was thinking maybe not the same lines but something like that. The Problem is that I changed the RDU just becouse we were feeling some knokin noise on the axle asembly, and i got o brand new one but there was no module :) I got in touch with a Ford service here in Poland and they said: the new module will be "empty" and it has to be calibrated. But we are not able to make this becouse the car is from USA. And this has to be made online. ControlNode any good thougts ? Maybe some tips. It's not that this happens evertime I drive the car but I want to have everything as ist should be :) Now i will have a brand new module, so there must be some way to get this together ?! or maybe just calibrating may old module with the new mechanical RDU will be enought ? As i Said the problem is not constant. And in my opinion something thats broken cant work or nor work at the same time :)
 

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If Ford shipped a new RDU without the controller I would guess there was a code or something to download the calibration for it, or calibration information that should have shipped with it they can manually push into your module for it to "know" the new RDU. I can only go based on the post I've seen over the last 6 years on how the system works as I've not yet had to deal with replacing any of those parts myself. I thought I had read a while back that the controller was part of the RDU due to the "unique per RDU profile data", but with chip shortages it would make sense to get the calibration data at the factory and allow it to be loaded to the old controllers to prevent the old controllers from going to waste.
 

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Discussion Starter · #5 ·
Well I bought the new RDU not from Ford direclty, but through a second hand dealer. I know that Ford sell this as a set, but it would be very strange to not be able to make this work. Also the conector from RDU has only few pins, and i realy don't think so that the component would not work regardles a old controller. But i read here also something about the contrellers needing an update from Ford. Tomorrow i will se someone that made mi some things like language change, Sync update, Euro speck radio etc. and he said he can try to make a calibration as long as the components have good conection (nor rusty plugs...) he recons it's possible. It cant be so complicated, and as I said everyhing is working - the problem is from time to time. I took out the component from my old RTU where you put the conector, and this seems only as a elektromotor with a small schaft on the end. I think this operates the clutch in the RTU. It would be very stupid fot this to work in a other way so maybe it will be easy to calibrate or update. Any other ideas ?
 

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This post has information, if your service center didn't load the right config into the controller for the replacement RDU there can be codes thrown, and possible damage to driveline.

 

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Discussion Starter · #7 ·
Well the only thing coming to mind In reading this info is that this happens when I really give it full throttle 1-2 gears. But from 3-6 this does not happen. This can also be the overheating issue. But there is also one thing. This was happening also with the old RTU. Not so often, but happened few times after starting the car - not driving. All abs sensors are clean, two of them are new (front). Is possible for wrong fluid? I used full synthetic Mobile 1 75W85. I'm having a very funny gremlin here :):):)
 

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Discussion Starter · #8 ·
There is also one thing that wonders me- you can buy a brand new RTU with the AWD module. No big deal. So if you just swap a old unit for new, connect plugs the system will not work? How the hell it's calibrated.... If so this will be very very stupid and I really doubt that. But maybe you have other opinion 😜now I have a new module and and I really doubt that there is nothing there...
 

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Did you read the pictures of the service manual that were posted in that thread?



... So if you just swap a old unit for new, connect plugs the system will not work? How the hell it's calibrated....
No, it will not work correctly if you just swap the parts. It's calibrated according to the factory service manual by using the IDS tool connected to the car to push the configuration into the all-wheel drive module. If you read that you can do it without doing the inhale-exhale from the old control module to the new module, it also states that if you are replacing the module without a control unit you must push the calibration in. The calibration can be found stamped into the RDU. I don't think it's stupid for the amount of precision they need to get into for the proper control of the vehicle. General assembly variations between clutch pack thickness or spring tension or flow rates for hydraulic system can have variations so having tested and calibrated on their systems to build a profile of that specific piece of hardware then you tell the computer what that specific piece of hardware's profile is so it knows how to control it properly to get the expected outputs.

If that is hard to read.... Blame voice to text.
 

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Discussion Starter · #10 ·
Yep, I did. So every module is preprogrammed to a new RTU. Ok so i have a new RTU and I will have a new module. So if they sell a new mode separately it has to be preprogrammed as well. It's very very strange all of this. I'm confused what to do right now.
 

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No, it clearly states that you can load/update the configuration data for the RDU in the AWD control module, you just need to have Ford use there IDS tool to do that.
 

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Without looking at it myself, or with enough personal experience working on them I can't say. But I can say: If the job was not done correctly, I would trying doing it correctly before replacing more parts that may not resolve the issue.
 

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Discussion Starter · #14 ·
Well there is nothing that you can do incorrectly replacing the RTU. Every bushmecanic is able to do that. There is a gremlin somewhere. Actually I drove the car now. Hit the throttle cue of times and went through the gears nothin happened Al normal. Stoped on the lights and started slow and it popped up...AWD and drive modes off....
 

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Discussion Starter · #16 ·
Yeahh i mean mecanicly there is nothing wrong. I will try to make the calibration. If not I have a brand new RTU with module for good price. But I think this can be done with what I have.
 

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It's a very expensive Focus with "bespoke" parts. Save yourself the hassle/potential problems and just have it done correctly by the dealership.

If you want to treat it like a Subaru why not buy a Subaru? LOL

Seriously, I'd get the dealership to inhale/exhale the configuration on these per the service manual.
 

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Discussion Starter · #18 ·
Well don't be jealous my love. Our service in Poland will not Service this car becouse i imported this from USA. This is the main problem. I mentioned this many times in this post. We are actually talking about a very special and fast car. But bespoke parts.... I don't think so.
 

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Discussion Starter · #20 ·
Hi guys, and girls as well. I think the problem is solved. I did a adaptation of the old module today with Ford IDS online connection. As for now the car didn't show any problems. The guy that did this didn't take payment and told me Toruń the car for a week. If this will not come back a pay him. As becouse this was his first attempt I this car. But said that there are many things possible to do if for example this comes back.
 
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