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Old 12th April 2022, 12:27   #1
hogweed
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Default Airbag – ecu – configuration error 401

My airbag light was on again, and I turned it off some weeks ago using the SRS Tool to disable the pre-tensioner.


Unfortunately, she was in for something else today, and the mechanic moved the driver’s seat – now it’s on again, this time with “AIRBAG – ECU – CONFIGURATION ERROR 401”


Can anybody shed any light on this one please?
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Old 12th April 2022, 12:50   #2
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Quote:
Originally Posted by hogweed View Post
My airbag light was on again, and I turned it off some weeks ago using the SRS Tool to disable the pre-tensioner.
Hi Roger,

Is it a good idea to disable part of a safety system which may one day save your life (or the next owner of your car)?

In your other thread today you describe a brake fault due to corrosion of the backplate and the fitting of a non-standard nut and bolt. This may well come back to bite you as well. If the backplate is corroded to this extent, you should really renew it.

The recurring faults and consequent bills can be minimised by correcting these problems at source as soon as they occur. That may not be the cheapest solution at the time but it will be in the long term.

Simon
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Old 12th April 2022, 13:33   #3
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Hook the car up to a T4, do a reconfigure so it sets the ECU back up correctly then fix the issue. Disabling part of the airbag system probably invalidates insurance.
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Old 12th April 2022, 14:36   #4
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Originally Posted by SD1too View Post
Is it a good idea to disable part of a safety system which may one day save your life (or the next owner of your car)?
Pretty sure I mentioned in my original post about this that it was a temporary stop-annoying-me “fix” till I could get it sorted properly… and isn't the system disabled when the airbag light is on anyway?

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In your other thread today you describe a brake fault due to corrosion of the backplate and the fitting of a non-standard nut and bolt. This may well come back to bite you as well. If the backplate is corroded to this extent, you should really renew it.
Well, I’m at the mercy of whoever I can get to do work on any particular day/month/year. Sometimes, when they say something is OK, I just have to decide whether to trust their judgment or not. I just don’t have the luxury of leagues of mechanics queuing up for my business… and I am on a limited budget, whether I like it or not.
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Hook the car up to a T4
If only. There are, to my knowledge, 2 T4 operators here, and both well beyond the reach of anything like public transport for getting back home if I take the car to them. And the one I know is generally booked up weeks in advance. So, however ill-advised it may be, people in my position have to try alternatives sometimes.
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Old 12th April 2022, 14:38   #5
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Quote:
Originally Posted by hogweed View Post
Pretty sure I mentioned in my original post about this that it was a temporary stop-annoying-me “fix” till I could get it sorted properly… and isn't the system disabled when the airbag light is on anyway?


Well, I’m at the mercy of whoever I can get to do work on any particular day/month/year. Sometimes, when they say something is OK, I just have to decide whether to trust their judgment or not. I just don’t have the luxury of leagues of mechanics queuing up for my business… and I am on a limited budget, whether I like it or not.

If only. There are, to my knowledge, 2 T4 operators here, and both well beyond the reach of anything like public transport for getting back home if I take the car to them. And the one I know is generally booked up weeks in advance. So, however ill-advised it may be, people in my position have to try alternatives sometimes.
It takes less than 5 minutes to do a reconfigure on the T4, so you definitely wouldn't need to leave a car for something like that. 15 minutes would see a reconfigure and fault codes read, including hooking the T4 up and booting the laptop up. I know people want to try alternatives, but I've had to rebuild 4 cars ZCS codes from scratch because of people messing with TOAF, and changing the coding in the airbag ecu doesn't always work correctly and leaves corruption, which is most likely what you are experiencing.
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Old 12th April 2022, 14:44   #6
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Quote:
Originally Posted by Jamiewelch View Post
It takes less than 5 minutes to do a reconfigure on the T4, so you definitely wouldn't need to leave a car for something like that. 15 minutes would see a reconfigure and fault codes read, including hooking the T4 up and booting the laptop up. I know people want to try alternatives, but I've had to rebuild 4 cars ZCS codes from scratch because of people messing with TOAF, and changing the coding in the airbag ecu doesn't always work correctly and leaves corruption, which is most likely what you are experiencing.
Thanks Jamie, I know that’s good advice, but he doesn't do “while-you-wait” I’m afraid. No, I do want the wiring fixed properly, everything reset to standard etc but, because of the logistical difficulties, I need to accumulate a list of things to be done, book him for some time in May probably, then get it all done at once.


And while it keeps breaking down and I need it now, that’s very difficult. Thus my thoughts about it being time for a new car… except I can’t afford anything I’d actually like to have.
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Old 12th April 2022, 14:57   #7
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Surely someone with a similar Autoliv SRS could send you a back-up of their file which you could then restore? Sorry, I can't as I've only got XP which isn't modern enough for the later tool (and you know how much I love Windows).

Someone?
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Old 12th April 2022, 15:02   #8
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Quote:
Originally Posted by vitesse View Post
Surely someone with a similar Autoliv SRS could send you a back-up of their file which you could then restore? Sorry, I can't as I've only got XP which isn't modern enough for the later tool (and you know how much I love Windows).

Someone?

Ah, XP... it was great


I've re-enabled the pretensioner, and now, as expected, a further fault has appeared. As I say, this only happened when John moved the seat, so I don't *THINK* it was anything to do with my SRS-tool fiddlings some weeks ago...


Thanks for the suggestion - but the SRS tool is separate from TOAF, and doesn't have the facility to backup/load files etc
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Old 12th April 2022, 15:10   #9
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OK - good to know that there's no restore facility in the later SRS.

I wouldn't worry too much about the non-standard retaining pins for your brake shoes, if they work then that's fine. I made do with some threaded bolts for a while until I had time to order/change the backplates. Even MarinaBrian once suggested these were a suitable alternative to the standard ones -https://www.ebay.co.uk/itm/REAR-BRAKE-SHOE-HOLD-DOWN-KIT-SPRINGS-PINS-FITS-FORD-TRANSIT-76-91-BSF0230A/231361437069?epid=28004453268&hash=item35de375d8d: g:SmcAAOSwhbZdg5IX

Keep well
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Old 12th April 2022, 15:12   #10
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Thanks as always Mike
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