BPGA replacement on 308SW

[dram773]

As Paul-R advises: reset the BSI.
Then, if problem persists, I think you need to do a diagnostics scan using Diagbox 9.xxx
Post any error codes here and someone will probably help.

[OlYa]

Thank you, Paul-R and dram773. I saw a topic on BSI reset. But for that I need first battery charged.
Tomorrow comes OBD scanner, then I reset engine error and drive to charge the battery. After will do BSI reset and see what happens

[myglaren]

Better to use a dedicated charger to fully charge the battery.

[OlYa]

What happened so far after BPGA replacement:

0. Empty battery
1. Battery charged fully. But it took 2 !! days for 70Ah with 4A charger.
2. After battery installation was multiple attempts to do BSI reset
3. The car had I ride about 50 km

But still scanner show U1218 (81) and P057F (00) errors that cannot be cleared. Start and Stop, driver chair adjustment do not work. With driving there are no problems.
Do I need to register battery like new again? Basically to show the car to professionals?

[dram773]

I suggest replacing the failing battery - especially if it took 2 days to charge. This often triggers the U1218(81) fault, indicating a connection fault on the CAN.

[OlYa]

Hi there! Sorry for restarting old topic.

The problem (Electric circuit error, Battery charging error) came first a year ago. I replaced a battery (it was still original) and problem disappeared.
Till now. Besides dashboard messages the car experienced no faults. After yearly maintenance I was told to prepare 800 Euro for new part and work and I took time to think about.
But after one week in garage the car's battery was drained completely.

As 800 euro was still not an option, I have replace BPGA following advices from this thread with completely drained battery.
The part: https://de.aliexpress.com/item/10050031 ... pt=glo2deu

1. I did connection to a new BPGA one contact after another to avoid mistakes.
2. Two fuses on a new part were missing, so I took them from old.
3. After replacement I started my car using booster (don't know how it can be properly called)

Electric circuit error is gone, but I have now engine error and permanently shimmering rear lights.

Do you gays have any thoughts why lights shimmer (flicker quickly)?
And was engine error mainly due to completely drained battery?

Problem solved by officials. I forgot to install fuse on new BPGA. That costed me another 120 Euros.

[Paul-R]

Ouch, an expensive lesson. It reinforces the mantra to check that a replacement item is configured exactly as per the original.

Thank you for letting us know.

[Ianroderickgray]

Hello everyone,

First off, I just want to say this forum is a fantastic resource, the shared information here has been hugely appreciated and really helpful, so thank you!

I seem to be in a very similar situation to many others here. Back in May, the warning “Electrical Circuit System: Have the vehicle repaired” first appeared on my 308 SW (2016). I had it serviced at a local garage, and after being told it was sorted, the issue came back within two days, the battery drained completely and I had to use the key to open the driver’s door.

I bought a replacement battery, and the mechanic kindly came over to install it, then ran a diagnostic check at his garage. He suspected the BPGA was the likely culprit.

Oddly, after that the warning only appeared sporadically and the car seemed OK for a while. But yesterday, the power went completely again. The electronic fob wouldn’t work, and after opening it with the key, I found the car was totally dead with no power at all.

My mechanic quoted me around £850 (parts included) to replace the BPGA, which I just can’t afford right now, so I’m going to attempt it myself (somewhat nervously, as I’m not very car-savvy at all).

I’ve ordered a replacement BPGA from Neo Brothers (Citroën & Peugeot Battery Management Unit & Protection 9675350280), which arrives tomorrow. The battery is only a few months old, so I’m hoping it’s still fine, but does anyone know if I’ll need to charge it first? If not, presumably I'll need to fully charge it before replacing the BPGA module?

Is there anything else I should be aware of before I attempt this?

Car details:

Peugeot 308 Allure S/S Auto 1.2 Estate (Petrol)

PureTech E-THP 130 EAT6 Auto

VIN: VF3**************[VIN obfuscated, can be read by forum staff] (I have no idea how to obscure this, so apologies if it's bad etiquette to just post it).

Thanks in advance for any advice!

Ian

[mickthemaverick]

You may find this video useful, I haven't watched it myself!!

[Ianroderickgray]

I replaced the BPGA unit on my 308 SW last night, following the advice and the instructions on this thread very closely and I'm happy to report that it worked!

Removing the original unit was initially tricky as there are so many other components that are squeezed tightly around it. Removing some of the lower screws was particularly irritating, but once I managed to get the covers off, the rest was pretty straightforward and it was just a case of being meticulous about taking photos of each cable and each insert and then switching one at a time from the old unit to the new.

I did have a bit of a scare when I tried to jump start the car though (A friend drove over to help) as I was a tad too eager to see if the unit worked and tried to start the ignition waaaaay too early, and the car did not like that at all. But having left it for an actual solid ten minutes, it all started without any issues and finally, no electrical warning sign (Or service symbol) for the first time since January!

Huge thanks to everyone who shared their advice, this has solved an issue that had been bothering me since the start of the year and which several mechanics had largely overlooked. Couldn’t have done it without this thread!

I did have one last question that I was hoping someone might be able to help me with though. I tried to follow the BSI Reset protocol very handily laid out in the other thread. I'm not entirely sure whether it worked, as I think I tried it too early into the process of charging the battery. is it worth me trying again or at this stage will it not matter too much? I drove the car around for around 45 minutes without any issues after finally getting enough power in the battery, but I want to make sure I'm fully following all protocols!

[inarareaghan]

Hi Marc,
This thread was very helpful! I have the exact same issue - if I post my VIN will you be able to tell me if any reprogramming is required once I have replaced the BPGA unit?

[doctor667]

Hi there, like many here I have the same issue and have been quoted 750 euros to replace the BPGA, on top of the 150 I already paid for the diagnosis which I find a bit ridiculous. To add insult to injury, if this turns out to be something else, then I will have changed it for nothing and would need to pay more. So I am really now thinking of sourcing the part myself and have another garage fit it as I'm not very handy.

Would a mod be so kind and check my VIN? It's VF3**************[VIN obfuscated, can be read by forum staff]

If there's anyone here from the Netherlands and has done that change at an independent garage, I'd love to hear which one cause the 2 French car specialists I reached out to earlier didn't want to touch this error. I'm in Utrecht but could go to other cities as well.

[MattBLancs]

Hi there! Sorry for restarting old topic.

The problem (Electric circuit error, Battery charging error) came first a year ago. I replaced a battery (it was still original) and problem disappeared.
Till now. Besides dashboard messages the car experienced no faults. After yearly maintenance I was told to prepare 800 Euro for new part and work and I took time to think about.
But after one week in garage the car's battery was drained completely.

As 800 euro was still not an option, I have replace BPGA following advices from this thread with completely drained battery.
The part: https://de.aliexpress.com/item/10050031 ... pt=glo2deu

1. I did connection to a new BPGA one contact after another to avoid mistakes.
2. Two fuses on a new part were missing, so I took them from old.
3. After replacement I started my car using booster (don't know how it can be properly called)

Electric circuit error is gone, but I have now engine error and permanently shimmering rear lights.

Do you gays have any thoughts why lights shimmer (flicker quickly)?
And was engine error mainly due to completely drained battery?

Problem solved by officials. I forgot to install fuse on new BPGA. That costed me another 120 Euros.

Some pictures here: I nearly missed these too! Not obvious at all!!
https://frenchcarforum.co.uk/forum/view ... ga#p841600

[MattBLancs]

I drove the car around for around 45 minutes without any issues after finally getting enough power in the battery, but I want to make sure I'm fully following all protocols!

As said by others, a proper (ie dedicated battery charger plugged in from the mains) recharge of that battery would be a good idea. It'll still be pretty flat I'd think even with the car trying to top it up for 45 minutes.

[MattBLancs]

Hi Marc,
This thread was very helpful! I have the exact same issue - if I post my VIN will you be able to tell me if any reprogramming is required once I have replaced the BPGA unit?

My understanding from reading on here (and having changed the BPGA on my own car) is no reprogramming is needed after this task.