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Primary battery replacement

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I've had a battery problem with my vehicle since yesterday (diesel EZ 5/23, two batteries, 18tkm):
No error message at all in the morning, usual 30km to work. Outside temperature 7-9°C, rain.
In the evening 11 hours later after starting the car, battery voltage warning light in the small display, acoustic and visual warning signal "battery voltage low", display 37% state of charge. Prior to this, no use of the auxiliary heating or other intensive consumers. Drive home 30km, then charge level 76%.
This morning 12 hours later again without auxiliary heating or similar. State of charge 37%, warning lights etc pp as on the previous evening. Journey to work 30km, state of charge 75%.
Just now, 4 hours later without consumers: only 61% state of charge.

Has anyone had a similar problem or any ideas as to the cause?

I have not yet had any battery faults, especially no deep discharge. On the contrary: after installation of the original Webasto heater by the dealer at the beginning of November, very careful observation of the battery charge in order to estimate the consumption of the heater: State of charge was always >92% in the evening and never <88% after 2*30min of heating in some cases.
 

Voader - Oudersopzwier

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I've had a battery problem with my vehicle since yesterday (diesel EZ 5/23, two batteries, 18tkm):
No error message at all in the morning, usual 30km to work. Outside temperature 7-9°C, rain.
In the evening 11 hours later after starting the car, battery voltage warning light in the small display, acoustic and visual warning signal "battery voltage low", display 37% state of charge. Prior to this, no use of the auxiliary heating or other intensive consumers. Drive home 30km, then charge level 76%.
This morning 12 hours later again without auxiliary heating or similar. State of charge 37%, warning lights etc pp as on the previous evening. Journey to work 30km, state of charge 75%.
Just now, 4 hours later without consumers: only 61% state of charge.

Has anyone had a similar problem or any ideas as to the cause?

I have not yet had any battery faults, especially no deep discharge. On the contrary: after installation of the original Webasto heater by the dealer at the beginning of November, very careful observation of the battery charge in order to estimate the consumption of the heater: State of charge was always >92% in the evening and never <88% after 2*30min of heating in some cases.
Yes, I had the same problem. Only I don’t have the dual battery set up. Meaning, it didn’t start anymore without the backup. Battery dropped 12% a day, and was complete flat after 3 days not driving. Sometimes it wouldn’t charge.
Seems to be that the battery was defective. Probably due to standing a long time on the Hambach parking. I have vin xxx 410 production date 24 of november 2022. Or it was a bad batch of battery’s. Anyway, dealer swapped the battery - problem solved.
 

j3t3r

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Can someone help me understand does the battery read out on the Offroad menu section show the primary battery or the secondary battery?

I had a low battery warning but when I try to put the primary battery on a trickle charger the charger displays that it’s fully charged.
 

TheDocAUS

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I had a low battery warning but when I try to put the primary battery on a trickle charger the charger displays that it’s fully charged.
I believe the Grenadier estimates charge levels based on the battery voltage,* so if you put it on a battery charger (which applies a higher voltage to charge) the Grenadier thinks the battery is fully charged. Turn off the charger and look at the battery level 10 minutes later to get an accurate reading, as the battery voltage drops quickly after the charger is removed to a more realistic voltage.

I am not 100% certain, but I believe the Grenadier monitors the main battery for voltage, but if you have two batteries remember the batteries are not isolated from each other.

*It will be a little more complex than this, the car probably monitors the start voltage then monitors charging from the alternator. When driving you can see the charging amps are varied over time both up and down, as the algorithm is working out an accurate state of charge (SOC). Even when the SOC is 100% often the car continues to charge at 2-3 amps for some time, because estimating the SOC based on voltage is not an exact science. I treat the SOC as an estimate with a 2-3% variance. With healthy batteries, you know you are getting close to a full charge when amps drop to around 2-3 for few minutes.
 
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Mr. Largo WINCH

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Bonjour à tous et alerte sur le système de gestion de l'énergie électrique
J'ai effectué aujourd'hui un parcours de 200 km environ. Pris dans les embouteillages, j'ai sélectionné "Off Road" sur le système d'info divertissement pour vérifier le niveau de la batterie principale et surveiller la charge.
En étant au ralenti dans les embouteillages, j'ai constaté des variations très importantes de la valeur de charge et de la valeur de décharge quelques instants après. Je pense que c'est tout à fait anormal et qu'il y a un GRAVE dysfonctionnement du système de gestion de la charge.

J'ai photographié une valeur de charge à 109 Ampères et une valeur de décharge à 288 Ampères quelques instants après. Je précise que le seul appareil connecté est une tablette Samsung Android sur la sortie INT1. Par précaution j'ai également branché un petit voltmètre sur la sortie INT2. Les valeurs de tension indiquées sur l'écran du Grenadier sont identiques (à 0,1 Volt près) aux indications du voltmètre branché sur INT2.

Moteur coupé, le système indique 10 A de courant de décharge pour une tension batterie de 12,6 Volts (confirmé par le voltmètre à 12,5 Volts) bien que la charge de la batterie soit indiquée à 86 %.

J.'ai également fait une vidéo qui montre les variations rapides de charge et décharge amours que je suis au ralenti.

Comment se fait-il que la batterie se décharge à 10 A moteur coupé alors que rien n'est connecté ? Ceci signifie qu'au bout de 5 heures, la batterie a perdu la moitié de sa charge.
Un courant de décharge de 288 A est totalement anormal et dangereux (même en impulsion).
J'ai déjà constaté (comme d'autres utilisateurs du forum) que la batterie principale perd 50 % de sa charge en quelques jours seulement.

Est-ce qu'un autre utilisateur du forum a constaté les mêmes anomalies ?

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*
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Eric

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Bonjour à tous et alerte sur le système de gestion de l'énergie électrique
J'ai effectué aujourd'hui un parcours de 200 km environ. Pris dans les embouteillages, j'ai sélectionné "Off Road" sur le système d'info divertissement pour vérifier le niveau de la batterie principale et surveiller la charge.
En étant au ralenti dans les embouteillages, j'ai constaté des variations très importantes de la valeur de charge et de la valeur de décharge quelques instants après. Je pense que c'est tout à fait anormal et qu'il y a un GRAVE dysfonctionnement du système de gestion de la charge.

J'ai photographié une valeur de charge à 109 Ampères et une valeur de décharge à 288 Ampères quelques instants après. Je précise que le seul appareil connecté est une tablette Samsung Android sur la sortie INT1. Par précaution j'ai également branché un petit voltmètre sur la sortie INT2. Les valeurs de tension indiquées sur l'écran du Grenadier sont identiques (à 0,1 Volt près) aux indications du voltmètre branché sur INT2.

Moteur coupé, le système indique 10 A de courant de décharge pour une tension batterie de 12,6 Volts (confirmé par le voltmètre à 12,5 Volts) bien que la charge de la batterie soit indiquée à 86 %.

J.'ai également fait une vidéo qui montre les variations rapides de charge et décharge amours que je suis au ralenti.

Comment se fait-il que la batterie se décharge à 10 A moteur coupé alors que rien n'est connecté ? Ceci signifie qu'au bout de 5 heures, la batterie a perdu la moitié de sa charge.
Un courant de décharge de 288 A est totalement anormal et dangereux (même en impulsion).
J'ai déjà constaté (comme d'autres utilisateurs du forum) que la batterie principale perd 50 % de sa charge en quelques jours seulement.

Est-ce qu'un autre utilisateur du forum a constaté les mêmes anomalies ?

View attachment 7851770*
View attachment 7851771
Or it could just be the visual display having communication problems with the IBS ( intelligent battery sensor) rather than an actual charge/discharge erratic consumption problem
 

Mr. Largo WINCH

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Non,
il y a bien un problème de consommation anormale car le petit voltmètre connecté sur INT2 (Pieds du passager) relié à la batterie principale, indique bien une forte chute de tension due à un appel de courant. L'information de tension donnée par le système d'info divertissement correspond à l'information donnée par le voltmètre. Il y a bien un appel de courant qui fait chuter la tension de la batterie et l'alternateur et son régulateur ne parviennent pas à suivre la demande de courant.
 

TheDocAUS

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Bonjour à tous et alerte sur le système de gestion de l'énergie électrique
J'ai effectué aujourd'hui un parcours de 200 km environ. Pris dans les embouteillages, j'ai sélectionné "Off Road" sur le système d'info divertissement pour vérifier le niveau de la batterie principale et surveiller la charge.
En étant au ralenti dans les embouteillages, j'ai constaté des variations très importantes de la valeur de charge et de la valeur de décharge quelques instants après. Je pense que c'est tout à fait anormal et qu'il y a un GRAVE dysfonctionnement du système de gestion de la charge.

J'ai photographié une valeur de charge à 109 Ampères et une valeur de décharge à 288 Ampères quelques instants après. Je précise que le seul appareil connecté est une tablette Samsung Android sur la sortie INT1. Par précaution j'ai également branché un petit voltmètre sur la sortie INT2. Les valeurs de tension indiquées sur l'écran du Grenadier sont identiques (à 0,1 Volt près) aux indications du voltmètre branché sur INT2.

Moteur coupé, le système indique 10 A de courant de décharge pour une tension batterie de 12,6 Volts (confirmé par le voltmètre à 12,5 Volts) bien que la charge de la batterie soit indiquée à 86 %.

J.'ai également fait une vidéo qui montre les variations rapides de charge et décharge amours que je suis au ralenti.

Comment se fait-il que la batterie se décharge à 10 A moteur coupé alors que rien n'est connecté ? Ceci signifie qu'au bout de 5 heures, la batterie a perdu la moitié de sa charge.
Un courant de décharge de 288 A est totalement anormal et dangereux (même en impulsion).
J'ai déjà constaté (comme d'autres utilisateurs du forum) que la batterie principale perd 50 % de sa charge en quelques jours seulement.

Est-ce qu'un autre utilisateur du forum a constaté les mêmes anomalies ?

View attachment 7851770*
View attachment 7851771
I have had one example where I had very unusual charge readings of around 145 amps, it dropped to around 120 amps and stayed there for some time. The battery was at 93% when it started. It has never happened again. If you took the 1 off the front of the reading, the charging amps made sense. The dealer thought it was a software glitch.

I have not had any unusually high drains on the batteries like some of those on the forum. I would look for a loose cable to rule that out.

AU Spec Diesel motor with a factory dual battery setup (using OEM batteries). At the time I only had the CTEK120S installed, now I have a CTEK 250SE as well.
 
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Mr. Largo WINCH

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Bonjour,
Quelqu'un a-t-il remplacé la batterie principale sous le siège arrière gauche ?
Est-il nécessaire de retirer le siège pour remplacer facilement la batterie ?

Merci de votre retour.

1713018531371.jpg
 

Mr. Largo WINCH

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TheDocAUS

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Bonjour,
J'ai l'intention de rajouter un boitier "Littelfuse" supplémentaire, pour alimenter les prises de toit, les prises de coffre, les sorties USB par la batterie secondaire.


Est ce que quelqu'un dispose des identification des sorties sur les boitiers répérés S (Starter) et A (Auxiliary) sur la photo suivante ?



View attachment 7853031
This thread here describes the two busbars used in an AU Spec Diesel, with plenty of pictures and links, especially here. S is the 7 stud busbar and A is the 5 stud busbar. On my car both are connected to the starter battery. The second link describes each stud on both busbars.

Google Translate
Ce fil de discussion décrit ici les deux jeux de barres utilisés dans un AU Spec Diesel, avec de nombreuses images et liens, en particulier ici. S est le jeu de barres à 7 goujons et A est le jeu de barres à 5 goujons. Sur ma voiture, les deux sont connectés à la batterie de démarrage. Le deuxième lien décrit chaque goujon sur les deux jeux de barres.
 

ipcrss

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I have had major battery/charging discharging issues in my 2 seater, single battery grenadier from day 1, almost a year ago. It has been inconsistant. I have been back number of times to have it looked at and most of the things others on here and facebook have had done I have asked to be done to mine to no avail. Some appear to work for a while or less than a while. After describing in detail the symptoms and asking several questions about the wiring specfically from the red charging underbonnet brass pole to the battery , smart alternator and ctec controller I have now been contacted. I have been told that the agent has found that
"the" expansion bottle has a pinhole crack/leak and is dripping coolant onto two wiring harnesses below and the harnesses/connections are badly corroded. They were of the opinion that that was the problem and these damaged items will be replaced. I understand that you could not see this coolant weep or the damaged harnesses/connectors (easily?) without removing the tank. I cannot say where is it or which one.
I have not damaged the expansion tank and do not go "off roading" or on expoditions etc. I do go offroad gently . This appears to be a manufacturing defect, assembly defect or perhaps proximity defect/clash. I cannot say at this point and without my grenadier.
For all those people with battery/charging issues and perhaps everyone else who does not have them yet, I suggest this area is examined. I read with great interest and gratitude (and sympathy) the problems others have with this otherwise great truck and I am only posting this as trying to do my (little) part.
 
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TheDocAUS

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Thanks, do you have any images that can help to locate the precise area to look at? It sounds like under the coolant expansion tank. Do you need to remove the tank to see the corrosion?
 

ipcrss

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No photos unfortunately. I left the grenadier at the dealers that is some distance away from me, I am busy this week and will not get it back until the middle of next week (hopefully). It is a RHD diesel so from the excellent Rok- Dr document it is probably under item 1 page 20. The high pressure coolant reservoir. That would fit with the very much reduced ability to charge the battery using the under bonnet post and an unpainted bolt. The telephone conversation was quick and a little vague in absolute detail and I was in a room full of unknown people so I cannot be sure if you can see it without removing the reservoir if you already know to look or if you cannot see it even if you know where to look. I asked about them removing parts if I needed to take it away and was told none would be removed before the new parts arrived, but that is not to say it was not removed and replaced. The HT reservoir area is "busy" and high up so it would be difficult to see under it I suspect.
 
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Rok_Dr

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I have had major battery/charging discharging issues in my 2 seater, single battery grenadier from day 1, almost a year ago. It has been inconsistant. I have been back number of times to have it looked at and most of the things others on here and facebook have had done I have asked to be done to mine to no avail. Some appear to work for a while or less than a while. After describing in detail the symptoms and asking several questions about the wiring specfically from the red charging underbonnet brass pole to the battery , smart alternator and ctec controller I have now been contacted. I have been told that the agent has found that
"the" expansion bottle has a pinhole crack/leak and is dripping coolant onto two wiring harnesses below and the harnesses/connections are badly corroded. They were of the opinion that that was the problem and these damaged items will be replaced. I understand that you could not see this coolant weep or the damaged harnesses/connectors (easily?) without removing the tank. I cannot say where is it or which one.
I have not damaged the expansion tank and do not go "off roading" or on expoditions etc. I do go offroad gently . This appears to be a manufacturing defect, assembly defect or perhaps proximity defect/clash. I cannot say at this point and without my grenadier.
For all those people with battery/charging issues and perhaps everyone else who does not have them yet, I suggest this area is examined. I read with great interest and gratitude (and sympathy) the problems others have with this otherwise great truck and I am only posting this as trying to do my (little) part.
That’s interesting. Given the reservoirs look to be generic BMW? parts, one hopes it’s an isolated issue. If not, then life could get interesting for left-hand drive vehicles as the under bonnet fuse box is located under this reservoir.

Cheers Steve
 

TheDocAUS

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That deserves a regular check then!
 

ipcrss

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I agree that it might be an isolated incident especially if the expansion tank is a BMW part and there are many thousands of good ones in service and manufacturing quality control is proven. I cannot say how or why the container has its leak and I have not seen it. I am aware of others who have very similar battery, charging and percentage charge and charging current monitor problems to my own and the leak onto the wiring is something I have not read about before. Most of the other fixes were tried and appeared to work for while but ultimately the problrm returned. I hope it is an isolated incident.
 
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