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Discussion Starter #1
This morning my 307 refused to start, and it's very, very weird.

Some symptoms that I've noticed:

  • Computer has been reset, date is 1.1.2003. and language back to French.
  • Windows and wipers work, but they are extremely slow and sluggish like they have barely any power.
  • Music wont turn on at all.
  • Error message shown means "Stop faulty braking system" in English, and that's what it shows when I switch language to English.
This is what it happens when I try to start it: drive.google.com/open?id=1VtQ2VwF1bASh0jU-Plyzczwaxp59O-okmg

So, I get the brakes failing warning (despite brakes seemingly working perfectly fine), and when I try to ignite the car makes some strange whirring noise and nothing happens except dinging sounds. I really don't think this is an actual brake issue, it looks like faulty electronics preventing ignition as some safety feature?

Is there any way to override this? I just want to drive to the nearest mechanic instead of towing it.
 

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Sounds like a battery problem. Common at this time of year and throws up all manner of error messages as the sensors and car's ECU isn't getting the full 12v.
 

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Discussion Starter #4 (Edited by Moderator)
Thanks guys, I just changed the battery and it started up right away. Who programmed this ECU, I'd like to kick his ass. As a programmer myself, giving users an incorrect message is a cardinal sin.
 

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Thanks guys, I just changed the battery and it started up right away. Who programmed this ECU, I'd like to kick his ass. As a programmer myself, giving users an incorrect message is a cardinal sin.
It didn't show an incorrect message. As per Gibbo's response, when the battery capacity ran low the ABS ECU was unable to work correctly and so the error message was correct. Yours was possibly in a minority because usually, several ECU's are unable to work correctly and in my instance of a failing battery had lots of warning lights and messages show up and a shed full of error codes stored. Everyone of them was a false error but at the same time they were correct errors because the ecu's were unable to function.

As for kicking the programmer and yourself being a programmer, I would suspect you have far more storage for your software and error checking routines along with any messages than the BSI has so the programmers have a limited amount of space in which to pack the error messages. If they had unlimited storage I've no doubt they could have the system check for every possibility instead of in a lot of cases have to use a generic, all encompassing message. I highly doubt you could do any better regardless of how good you are at programming.
 

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Any half decent programmer should know that ANY sort of power fluctuation while programming can result in all sorts of errors/corruption, and takes steps, like using a decent UPS, to ensure a constant supply of power.
How do you think the poor ECU/BSI in your car feels when YOU allow it to be starved of it's life supply? AND then you blame someone else for it for falling short... :nono:
 

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Discussion Starter #9
Any half decent programmer should know that ANY sort of power fluctuation while programming can result in all sorts of errors/corruption, and takes steps, like using a decent UPS, to ensure a constant supply of power.
How do you think the poor ECU/BSI in your car feels when YOU allow it to be starved of it's life supply? AND then you blame someone else for it for falling short... :nono:
That is a complete nonsense. Spewing out random garbage instead of warning that battery is low is completely and utterly unacceptable behaviour. Imagine if your laptop warned you that your hard drive is failing when your battery was running low. Absolutely moronic.
 

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Maybe because 307 has a battery warning light?
The 'battery warning light' doesnt tell you the capacity or condition of the battery.it only tells you the alternator is charging and even that can fail but still charge...or not...and my laptop tells me when the battery is low so I can save any work and or shut it down safely.
 

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The 'battery warning light' doesnt tell you the capacity or condition of the battery
Exactly my point. That's why people get ******.

my laptop tells me when the battery is low so I can save any work and or shut it down safely.
******* exactly. It doesn't tell you "motherboard failing, pour water on it".
 

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That is a complete nonsense. Spewing out random garbage instead of warning that battery is low is completely and utterly unacceptable behaviour. Imagine if your laptop warned you that your hard drive is failing when your battery was running low. Absolutely moronic.
What you seem unable to grasp is that the "random garbage" is a consequence of a low battery. The car needs a battery in good condition for the diagnostic system to work. Of course, the designers could have provided a separate battery for the diagnostic system, but not at the price Peugeot turn their cars out for. You want high-price features, you pay high prices.

I have a higher-priced car as well as my Peugeot - a Toyota RAV4. It also threw a spurious code with a low battery. Conclusion - still not a high enough price. Some BMWs have a combined main and standby battery - it probably costs about £400 to replace. You get what you pay for.
 
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