I have already been left stranded twice with the B10-reev with strange error messages.
The first time, after being recovered by a breakdown lorry, the garage replaced the leisure battery and everything seemed to be fine, but after 40 km I was left stranded again. The breakdown lorry disconnected the negative terminal and the car started up again, but as a warning icon for an emissions control system problem remained, to be able to drive off on my own I would have had to sign a refusal of transport, and after that it would have been my problem…
Obviously it is now August so I have a courtesy car, but has this ever happened to any of you?
I had been driving for a few hours in fuel mode when the first fault occurred, so the leisure battery should have been charged, with the air conditioning on, a phone charging and a 64 GB SanDisk stick recording the onboard dashcams…
The car currently has 2,900 km on the clock
Thank you to anyone willing to share similar experiences
Good morning, I’m not a technician, so I’ll just make a few observations. To keep the 12-volt battery under control, I’ve installed a small Bluetooth monitor connected to the battery terminals; it costs around 20 euros and can be found on online sites. That said, I can state with certainty that the car begins to recharge the leisure battery as soon as you open the door to get in. On the battery (a 45 Ah AGM one), I’ve also fitted a GPS tracker. Well, after 5 days with the car left standing, the battery’s state of charge drops from 100 percent to around 65 percent. In the scenario you described, if you had the Bluetooth monitor, you’d have seen straight away whether it was recharging or not. As for the engine warning light, it could be down to the quality of the petrol — in that case the light should go off after a while, perhaps after adding more petrol to the tank to dilute the impurities better. Please keep us posted, thank you.
I’ve already bought a Bluetooth battery monitor — I’ll fit it as soon as I pick it up.
I’ve also got a diagnostic reader to keep an eye on any faults.
The first time the car cut out it had just come back from the holidays with over 500 km covered in the last day, but the second time I had only just driven out of the garage (about 40 km) and I don’t know the state of the battery. I saw that they’d done roughly 35 km to test it, but in EV mode, so I don’t know whether it had managed to recharge or not… I hope they tested it properly before closing the job…
In any case, thank you — I’ll bear your advice in mind and I’m sure it’ll be useful to others too.
Insert the terminal clamps of the Bluetooth monitor cables under the bolts you can see in the previous photo. To access the battery, you must first remove the boot floor panel and then the polystyrene part (by unscrewing the two plastic knobs that hold it in place).
Good morning, having not used the car for about a week, I monitored the charge level of the 12-volt auxiliary battery. Obviously, the battery was losing charge day by day, until it reached about 40 percent SOC and a voltage of about 12.20, which is quite low. This morning, during my usual check using the Bluetooth monitor app, I found a charge of 75 percent (SOC) and a voltage of 12.75 volts.
This means that the car’s electronics automatically detected the drop in capacity and voltage of the auxiliary battery down to the critical threshold and proceeded to recharge it (via the traction battery). What can I say, one less thing to worry about, especially when you leave the car parked for several days and fear finding it with a dead battery, given that the auxiliary battery is always active.
