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When you lock the car the BPGA turns most things off a few minutes later. I wonder if that reset something on the Citroen which allowed it to start.

What have you been using to diagnose the faults?

Can you post a link to the cable you ordered from Amazon? A lot of Lexia 3 cable sellers claim to be setting full chip set equivalents rather the actual full chip set Lexia 3. These don't work with the free software.
 
Discussion starter · #64 ·
Wow, finally i have come across the same problem. My RXH is not starting either and SOS light is flashing as well. Will be trying some of the suggested here with the mechanic and will report back in a couple of days.
Hopefully I can get a conclusion so this thread will save you time.....
 
I've left the cable up at the workshop but here it's is on Amazon
The Diagbox software only works with the PSA cable (Vehicle Computer Interface VCI) which is commonly called a Lexia3*. Here is a link to the Lexia 3 I bought earlier this year: https://www.aliexpress.com/item/4001346459229.html (there are 3 options I got the full chip no clip). The clip is for very old cars.

*Lexia 3 was originally the name for the Citroen diagnostic system including software but for some reason most people call the VCI a Lexia 3.
 
I just remembered that for Peugeots with automatic gearboxes you need to wait 12 minutes before disconnecting the battery. I don't think this applies to the piloted manual gearbox. However, I looked at the procedure (attached) and one important thing for cars with handsfree entry and start you need to make sure the key is at least 3 metres away from the car and then wait 4 minutes before disconnecting the battery.
 

Attachments

Discussion starter · #67 ·
Hi.
Have ordered the correct cable.
Is there anything else I need to install to make sure it works when arrives at the weekend please?
I can send screenshots of the diagbox screens but no diagnostic function. Was that because of the cable?

Thanks
 
Discussion starter · #68 ·
Wow, finally i have come across the same problem. My RXH is not starting either and SOS light is flashing as well. Will be trying some of the suggested here with the mechanic and will report back in a couple of days.
Any joy with getting it going yet? One question, when it originally went off did you notice that in the centre dial where the running options can be changed from EV to four-wheel drive etc, was the light indicator still on the dial or not?
 
Hi.
Have ordered the correct cable.
Is there anything else I need to install to make sure it works when arrives at the weekend please?
I can send screenshots of the diagbox screens but no diagnostic function. Was that because of the cable?

Thanks
At this stage you should be able to get the first screen when you run the Diagbox software and select your car. Once you connect the cable you should get the second screen.
Image


Image
 
Any joy with getting it going yet? One question, when it originally went off did you notice that in the centre dial where the running options can be changed from EV to four-wheel drive etc, was the light indicator still on the dial or not?
Well actually my situation is a bit more complex so to speak.

So initially i was "washing" the AC condenser with foam . I was pumping the foam through the vents. Everything was going well till almost the end of the procedure when the sos light went on and car was trying to call the rescue services. It was going on for some 15 minutes till it stopped trying. I got scared of course but in the end the car was functioning normally after that incident. For about 3 weeks. Thenas I was driving out of a residential area and once i hit the road i have accelerated from 10-15 to 45-50kmh to get ahead of the other cars. The red ENGINE FAULT message popped on the dash and the steering got stiff. I have barely managed to get it to the rightmost of the road, it let me drive about 50-70 meters till it stopped completely.
As it happend for the first time (spoiler it happend in several months again after that) i thought i will just "take off the plugs" on the 12v battery for some 30 seconds, the error will clear and i will try to start it. It did not work of course so i have called for the tow and got it to my regular service mechanic guys that i used to service my other cars before.

They read the errors with Autel, there were at least a dozen but they told me the problem is with BSI, they opened it and it looked like it burnt. So they told me i needed to find another BSI and bring it to them for replacement. I did find one from another donor rxh. They swapped it in and miracle have happened. The car would start and run. Yes there were still some errors left but i did not care at the time as i was thinking to take care of them a little later.

Fast forward 3 months and about a 1000 km after, same situation happens. I have accelerated from 10-15 to 50 kmh and the car shuts down. Exactly same situation. I'm towing the car to the same guys. After a couple days they tell me it's highly likely the traction battery is dead. And they can't go past it with their diagnistics. I have taken the battery to other guys who have tested each cell and overall the battery was at 55 percent. I know it's not a good sign but i thought that it's strange that the car won't start at all so i decided to tow the car to Peugeot's official dealer. They tried their magic to make it start but it did not work out. Next day they called me telling that the traction battery is too weak and i should buy a new one or bring them a healthier one. I took the battery to another shop that got it up to 80% capacity. So i brought the battery back to the dealer and now miraculously they were able to go past the battery in their diagnostics investigation and now they tell me the problem is highly likely with the alternator and that i gotta bring them a new one so they could try it and see if it's really the case. Since it's an old model they don't have those alternators in stock.

I thought it's not a cheap gamble to take on. Based on the previous example with the battery that eventually was not the cause of the problem as it appeared, i was not sure i want to spend some Eur2000 just to cut away a possibility.

They also told me that if it's not the alternator then maybe it's the invertor or the wiring in between. Go figure

At that point they told me that they cannot help me with anything unless i bring them a 100% confirmed functional alternator to move forward. So i had to find someone else willing to jump on the task.

So final chapter, i know it's already a novel but stay with me for final couple phrases. The guy that the car is with now, for last 2-3 months already, has managed to start it but it runs 1-2 seconds and stops. He told me that he did not believe that BSI BSM was burnt the first time. He checked it and saw no damage except from the opening on the plastic cover by the guys at the first shop. He cleaned everything and swapped it back in. It worked, so apparently it wasn't burnt. Now interesting thing is that more than half of erros have gone. The car sees the old BSI BSM and it's fine.

So to sum it up, I had 2 instances in same conditions, but after the first one the car was made to start again and drive ok-ish (although not for too long)

So at this point i'm taking thematter in my own hands, roaming the forums and looking for solutions as mechanics would not spend more time trying to bring it to life.
 
Well actually my situation is a bit more complex so to speak.

So initially i was "washing" the AC condenser with foam . I was pumping the foam through the vents. Everything was going well till almost the end of the procedure when the sos light went on and car was trying to call the rescue services. It was going on for some 15 minutes till it stopped trying. I got scared of course but in the end the car was functioning normally after that incident. For about 3 weeks. Thenas I was driving out of a residential area and once i hit the road i have accelerated from 10-15 to 45-50kmh to get ahead of the other cars. The red ENGINE FAULT message popped on the dash and the steering got stiff. I have barely managed to get it to the rightmost of the road, it let me drive about 50-70 meters till it stopped completely.
As it happend for the first time (spoiler it happend in several months again after that) i thought i will just "take off the plugs" on the 12v battery for some 30 seconds, the error will clear and i will try to start it. It did not work of course so i have called for the tow and got it to my regular service mechanic guys that i used to service my other cars before.

They read the errors with Autel, there were at least a dozen but they told me the problem is with BSI, they opened it and it looked like it burnt. So they told me i needed to find another BSI and bring it to them for replacement. I did find one from another donor rxh. They swapped it in and miracle have happened. The car would start and run. Yes there were still some errors left but i did not care at the time as i was thinking to take care of them a little later.
That is very strange. The BSI doesn't control the engine that is done by the engine ECU. The BSI controls all the auxiliary equipment such as wipers lights air-conditioning etc.

The alternator in your car is a reversible alternator which charges the traction battery and restarts the diesel engine after the initial start with the starter motor.

The 12V battery is charged by the the traction battery so if the reversible alternator is not charging the traction battery the 12V battery will run flat as well. I suspect the dealer was on the right track suspecting the reversible alternator. There is a reasonable chance that if the 12V battery is put on a charger is will start the car and the engine should then run for a short time.

You may be able to find an alternator specialist that is able to rebuild it.
 
That is very strange. The BSI doesn't control the engine that is done by the engine ECU. The BSI controls all the auxiliary equipment such as wipers lights air-conditioning etc.

The alternator in your car is a reversible alternator which charges the traction battery and restarts the diesel engine after the initial start with the starter motor.

The 12V battery is charged by the the traction battery so if the reversible alternator is not charging the traction battery the 12V battery will run flat as well. I suspect the dealer was on the right track suspecting the reversible alternator. There is a reasonable chance that if the 12V battery is put on a charger is will start the car and the engine should then run for a short time.

You may be able to find an alternator specialist that is able to rebuild it.
Thing is at the dealer they could not even start it. The guy whom i took the car to after the dealer, after he swapped in the old BSI BSM did manage to start the engine for 1-2 seconds.

Let me dig the diagnostic result paper from the dealer.

EDIT : It was BSM i was talking in the previous post. So the BSM was presumed burned and swapped for another one from a salvage car.
 
Thing is at the dealer they could not even start it. The guy whom i took the car to after the dealer, after he swapped in the old BSI did manage to start the engine for 1-2 seconds.

Let me dig the diagnostic result paper from the dealer.
How many BSI have you tried? The main function the BSI plays in the engine starting is turn off immobiliser and allow the engine to crank.

If I understand correctly your original fault started when you were trying ot clean the air-conditioner condenser. The condenser usually sits in front of the radiator. Were you pushing foam through both unit into the engine compartment? Could some of the foam got into the engine ECU and main engine fuse box?
 
How many BSI have you tried? The main function the BSI plays in the engine starting is turn off immobiliser and allow the engine to crank.

If I understand correctly your original fault started when you were trying ot clean the air-conditioner condenser. The condenser usually sits in front of the radiator. Were you pushing foam through both unit into the engine compartment? Could some of the foam got into the engine ECU and main engine fuse box?
EDIT : It was BSM i was talking in the previous post. So the BSM was presumed burned and swapped for another one from a salvage car.


At the moment the car is with its initial BSM. It was 3 months (after the first incident abd before the second) that it was being driven with BSM from other car, but i suspect that second BSM was just installed on the car but was not properly "introduced" to all the other ecus.

Now as i am trying to remember, that AC condenser is somewhere at the center bottom. Where the polen filter is, either behind it or right in front, can't remember exactly. Not sure about the foam getting into ecu or fusebox but i have just remembered one more thing.

About 2 weeks before the first incident, i was trying to clean one of the windshiel nozzles, the right one i think. As it had some "tartar" buildup i was trying to clean it with a needle. At some point i think i have applied a bit excess of force and it snapped, i have broken those plastic snap on thingys that were keeping it in place and so the nozzle was basically swinging around inside when the hood was closed. It was for about a week till i have glued that nozzle back in place. In that time it was an instance where i have forgotten about that and tried to wash the windshield and water from that nozzle went inside the engine bay. I did not give it importance at the time and the car was also driving normally for a week or so after that.

So within 2-3 weeks before the first incident of it stopping in the middle of the road. I had some water get into the engine bay and that foam situation.
 
The BSI is the main cabin fuse box and is located in dash on the driver's side so should not have been effected by water/foam in the engine compartment. Here is the location diagram:
View attachment 119682
No problem with BSI. Sorry for confusion. I was actually talking about BSM being presumed damaged and swapped then put back on.
 
Discussion starter · #77 ·
No problem with BSI. Sorry for confusion. I was actually talking about BSM being presumed damaged and swapped then put back on.
That makes more sense. It should be possible to fit a used BSM. It may need configuring for minor things such as headlight washes.

The BSI is matched to the engine ECU and can't be transferred between cars without being virginised and reprogrammed.

If the 12V battery is fully charged the component that may be causing your problem is the engine ECU. This is located near the BSM. The engine ECU is a very robust component but under some circumstances was can get water inside via the connectors. It would be worth checking the engine ECU's three connectors for any sign of water.
 
That makes more sense. It should be possible to fit a used BSM. It may need configuring for minor things such as headlight washes.

The BSI is matched to the engine ECU and can't be transferred between cars without being virginised and reprogrammed.

If the 12V battery is fully charged the component that may be causing your problem is the engine ECU. This is located near the BSM. The engine ECU is a very robust component but under some circumstances was can get water inside via the connectors. It would be worth checking the engine ECU's three connectors for any sign of water.
Thank you for the suggestion. Will definitely check it out next week and followup.

another question that crossed my mind is whether there is some type of error that could get stored in BSM that's preventing the car from starting the engine.

Like in, it have died on me once on the road, some error got stored in BSM and it's not starting. Then the BSM is swapped the car starts, drives couple of months then same situation happens. it dies again and now same "fatal" error is stored in second BSM as well.

That doesn't explain why it died in the first place and then second time but it explains why the BSM swap helped after the first time. So yes i would still need to dig to find out what's the root cause but at least maybe i could drive it carefully before that. It may well be that the problem is with the alternator as the previous owner told me the belt was torn and he replaced it, maybe the procedure was performed not fully right or not complete. But theni guess there would have been some errors indicative of the belt or alternator etc.

Is there a way to virginise the BSM ?


Or i'm talking nonsense
 
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