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31-03-2021, 03:37 PM | #1 | ||
Starter Motor
Join Date: Jan 2021
Posts: 28
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Hi all,
I replaced my Ford Focus LW (2011) electric steering rack (and tire rod ends) with (with a lot of help!) New rack is working perfectly, however I now get an error when I start "Hill Start Assist Not Available". According to my ELM327, there are no faults I had to remove the lower control arm, and the ABS sensor. There was a odd metal clip thing on top of the lower control arm ball joint (found a photo on the internet here, it sat where the blue line is). Any ideas what's the culprit here? Is there some sensor or error I'm likely to have made in this area? Thanks |
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31-03-2021, 06:02 PM | #2 | ||
FF.Com.Au Hardcore
Join Date: Jul 2008
Location: Melbourne
Posts: 804
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I do not know the system well but check the ABS sensor behind the disc rotor as that is used tio tell if the car is rolling. Otherwise there is a sensor that tells the car if its on a slope that may be an issue
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02-04-2021, 12:49 PM | #3 | ||
Starter Motor
Join Date: Jan 2021
Posts: 28
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04-04-2021, 08:41 PM | #4 | ||
Starter Motor
Join Date: Jan 2021
Posts: 28
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Resetting the codes didn’t help add the errors reappeared immediately.
I “reset” the codes by disconnecting both positive & negative on the battery, and then connecting them together. Still no codes show up on my ELM327 (odb) Anyone have a suggestion on what to try next? |
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05-04-2021, 11:09 AM | #5 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,680
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When fitting the rack, was the steering column locked into place or was it free to spin around? If it was left free to spin around it could have damaged the clock spring or the steering sensor or just fitted in the wrong position (180 degrees out) which may not bring on any codes (although you usually see communication U codes present) but prevent operation of some systems like hill assist etc. You also need to have checked that the hill assist function is still turned on in the central car configuration (you need a diagnostic too to access). I have seen this get turned off for no apparent reason apart from a system glitched.
Is it the correct rack for the vehicle? There are several different racks for the LW Focus pending month/year and build specification. |
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06-04-2021, 02:12 PM | #6 | ||||
Starter Motor
Join Date: Jan 2021
Posts: 28
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Hello again!
Quote:
Quote:
Yep- it's the correct rack and is working well so far. |
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06-04-2021, 03:11 PM | #7 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,680
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Do all the functions available on the steering wheel work including wipers/blinkers, steering wheel switches etc?
I am not familiar with ELM, but does it have a function that shows you the steering angle sensor in degrees? In the straight ahead position in should read 0 and then as you turn right +ve degrees and -ve when turned left. See if you can do that? |
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07-04-2021, 09:43 AM | #8 | |||
Starter Motor
Join Date: Jan 2021
Posts: 28
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Quote:
We did have use a lot of force on the left control arm hard (hit with a sledge hammer to get it off). It was completely stuck on the control arm ball joint. Could I have damaged something significant when doing that? I have spent a while trying to get this to work with the ELM (requires adding custom PID). It keeps returning "No Data", although I'd say this is from my setup error not the car |
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