Fiat Van MOT Failure mainly due to ECU Fault Code B100 / B1000 Air Bag. Help.

trevskoda said:
I know a chap had a pug, 3 dealers and many attempts to sort the brain out, in the end a polish chap did the job for buttons, he put the brain in the deep freeze overnight and reprogrammed a few days later, problem sorted.
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They used to do that with coded radios but they did not ..like being defrosted in the microwave .
 
I had the same problem. Seems there’s a fault with this ecu. I took it out about 4 screws and two wee bolts unplugged it sent to crash test data Liverpool on a Monday morning and had it back on the Thursday Morning. Takes about 20 mins to take out and 10 mins to re fit. Once returned they guarantee it for life . Can’t rember exactly but think it was in the region of 60 70 quid plus postage. And you don’t need a computer or diagnostic to re fit it just plugs in light goes out on dash and it works.
 
Wully said:
I had the same problem. Seems there’s a fault with this ecu. I took it out about 4 screws and two wee bolts unplugged it sent to crash test data Liverpool on a Monday morning and had it back on the Thursday Morning. Takes about 20 mins to take out and 10 mins to re fit. Once returned they guarantee it for life . Can’t rember exactly but think it was in the region of 60 70 quid plus postage. And you don’t need a computer or diagnostic to re fit it just plugs in light goes out on dash and it works.
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Will it sort the wipers😂😂😂😱
 
magpus said:
Hello,
Just wondered if anyone can help with recommending a possible mobile site that can help.
Our motorhome Van failed it's MOT due to headlight too high nearside
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I can't help with the airbag but I see others mention failing on headlight aim every where I've ever been the tester usually corrects that during the test if adjuster arn't seized or broken isn't this normal practice
 
caledonia said:
Whatever you do it will probably only be Fiat that can reset the airbag light anyway. Best going to to the fiat dealership to ask personally. No point in getting Tom Dick and Harry involved when fiat will have to reset in the end. You never know if you go to the dealership rather than phone and email they might sort it while you wait and it might even be free.
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Nope.- Crashdata can reprogram the module. I belong to a Bailey MoHo site and this is a common fault. Once crash data have reprogrammed the unit and the owner refits the module, the light behaves as it should.
 
r4dent said:
Nope.- Crashdata can reprogram the module. I belong to a Bailey MoHo site and this is a common fault. Once crash data have reprogrammed the unit and the owner refits the module, the light behaves as it should.
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I would be taking my fiat to dealership first before I went removing ecu and sending it away to be reprogrammed as it could be as simple as a reset.
 
You might be able to do something with an OBD reader (like Carista) that lets you reset the code. Other than that, I once had the same issue with a Mitsubishi Pajero when I returned from three months in Australia. If the Fiat airbag system is similar to the Mitsubishi one, there is a large capacitor that discharges very slowly over time. If that capacitor is discharged when you switch the system on, an error code is triggered that doesn't reset when the capacitor is recharged. So, if the code appeared after an extended (i.e. several weeks) period of non-use, this might be the issue. In my case, I ended up paying someone £45 to reset the relevant ECU but then a Mitsubishi specialist told me how to do it without needed an OBD reader. Note that this is hearsay that I've never tried and might only apply to my old Mitsubishi -- so you use this info at your own risk. The method the specialist advised was:
  1. disconnect the batteries (which might require both habitation and cranking with a motorhome). Following this,
  2. turn on the ignition and fully discharge the system by repeatedly turning on the headlights and operating the brakes.
  3. Once you're sure the system is completely discharged, reconnect the batteries and wait thirty minutes.
    During this time the ECUs allegedly reboot/reinitialise, which should clear the error code.
  4. Turn the ignition on, start the car and confirm that the airbag light extinguishes.
No guarantees, but HTH, Geoff
 
witzend said:
I can't help with the airbag but I see others mention failing on headlight aim every where I've ever been the tester usually corrects that during the test if adjuster arn't seized or broken isn't this normal practice
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Used to be....
However most places now use the reason that the test is so tightly timed (and test centres sometimes have cameras as well as VOSA officers putting test cars through)
That they don't have time to do stuff like that...

My regular place is solid gold though and will always help if they can....
Maybe it's because I take such 'interesting' stuff for them to test (they call them "bloody Landrovers" and that "sodding motorhome that barely fits on the ramp)
BUT I know they don't mean it....
 
Here’s a photo of where the ecu is located and what to do.

63E789DB-48E9-4D2D-9718-84B8541165C3.jpeg
 
The Laika used to light the dash up like a christmas tree when you turned the cruise control on. Just had to remember to turn it off for the MOT.
 
magpus said:
Hello,
Just wondered if anyone can help with recommending a possible mobile site that can help.

Our motorhome Van failed it's MOT due to headlight too high nearside and also air bag light on dash.

The notes on the MOT show Fault Code B100 possibly B1000 from what I have read on forums.
The notes also show ECU internal fault, suspect new control module needed and reprogramming. Advise customer to go to Fiat as unable to reprogramme.

I have tried one local Fiat dealer that has failed to get back to me despite emails and voicemail left.
Another local Fiat dealer has such appalling reviews on trustpilot, that I would prefer to leave them alone.

I saw click mechanic and they said no, so I am getting worried as to how we can get it sorted.
Just wondered if anyone could recommend anyone whether a garage or preferably someone that can come out to us.

We are in the Essex area, CO5 postcode.
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Did the mot place not try to reset the air bag fault code ? That might be all it needs ? If your over my side of London I could reset your fault codes.
 
witzend said:
I can't help with the airbag but I see others mention failing on headlight aim every where I've ever been the tester usually corrects that during the test if adjuster arn't seized or broken isn't this normal practice
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I had that at the last MOT. The tester adjusted the headlight aim for me, only took a couple of minutes,
 
harrow said:
The same mot garage seem to adjust mine most times, no charge. :)
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yorkslass said:
I had that at the last MOT. The tester adjusted the headlight aim for me, only took a couple of minutes,
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I've never experienced any difference I'd not go back to any who failed mine for headlight adjustment unless it was seized and needed work to do it. As for timing I've only ever seen them have to wait before passing it
 
GeoffL said:
The method the specialist advised was:
  1. disconnect the batteries (which might require both habitation and cranking with a motorhome). Following this,
  2. turn on the ignition and fully discharge the system by repeatedly turning on the headlights and operating the brakes.
  3. Once you're sure the system is completely discharged, reconnect the batteries and wait thirty minutes.
    During this time the ECUs allegedly reboot/reinitialise, which should clear the error code.
  4. Turn the ignition on, start the car and confirm that the airbag light extinguishes.
No guarantees, but HTH, Geoff
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How do you turn on the ignition & headlights on (stage 2) when the batteries have been disconnected (stage 1) and not reconnected (stage 3)?
What system are you discharging?

Still think a phone call to Crash data is the best bet.
Costs nothing and you get advice from someone ho knows what they are talking about.
 
magpus said:
Light has been on for the last few weeks. It makes an alert noise to draw your attention to it.
Since the MOT the dash still shows the symbol and the noise still happens. Thanks for the suggestion of removing battery terminals, worth a try.
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I had the same problem with airbag light, pulled the spade terminals under seat off cleaned with contact cleaner and replaced also left battery disconnected for 12 hours reconected and light gone out. nine times out of ten its the seat connection.
 
magpus said:
Hello,
Just wondered if anyone can help with recommending a possible mobile site that can help.

Our motorhome Van failed it's MOT due to headlight too high nearside and also air bag light on dash.

The notes on the MOT show Fault Code B100 possibly B1000 from what I have read on forums.
The notes also show ECU internal fault, suspect new control module needed and reprogramming. Advise customer to go to Fiat as unable to reprogramme.

I have tried one local Fiat dealer that has failed to get back to me despite emails and voicemail left.
Another local Fiat dealer has such appalling reviews on trustpilot, that I would prefer to leave them alone.

I saw click mechanic and they said no, so I am getting worried as to how we can get it sorted.
Just wondered if anyone could recommend anyone whether a garage or preferably someone that can come out to us.

We are in the Essex area, CO5 postcode.
Click to expand...
Take a look at http://www.actronics.co.uk. they are local to you and will be able to sort it out or at least guide you to one of their authorised repairers
 
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