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Discussion Starter · #1 ·
Has anyone seen this Service charging system message? My wife has a new 4xe and we keep getting this message followed by a check engine light. It seems to happen most often when we are charging the vehicle from 0%-10% charge with a level 2 charger. My charger has a readout of amperage and you can see the amps fluctuate from 0 to 30 before this error pops up and the car quits charging. I replaced the charger just to verify that it wasn’t the issue and I’ve taken it to the dealer and they say there’s something wrong with the charging system but they don’t know what it is. So they just gave me the car back And said they look into it and I have not heard anything back from them.
 

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Has anyone seen this Service charging system message? My wife has a new 4xe and we keep getting this message followed by a check engine light. It seems to happen most often when we are charging the vehicle from 0%-10% charge with a level 2 charger. My charger has a readout of amperage and you can see the amps fluctuate from 0 to 30 before this error pops up and the car quits charging. I replaced the charger just to verify that it wasn’t the issue and I’ve taken it to the dealer and they say there’s something wrong with the charging system but they don’t know what it is. So they just gave me the car back And said they look into it and I have not heard anything back from them.
We'd like to discuss this further with you, akasam. Can you send us a private message with more details?

Kate
Jeep Cares
 

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We'd like to discuss this further with you, akasam. Can you send us a private message with more details?

Kate
Jeep Cares

Has anyone seen this Service charging system message? My wife has a new 4xe and we keep getting this message followed by a check engine light. It seems to happen most often when we are charging the vehicle from 0%-10% charge with a level 2 charger. My charger has a readout of amperage and you can see the amps fluctuate from 0 to 30 before this error pops up and the car quits charging. I replaced the charger just to verify that it wasn’t the issue and I’ve taken it to the dealer and they say there’s something wrong with the charging system but they don’t know what it is. So they just gave me the car back And said they look into it and I have not heard anything back from them.
We had this happen once to us, I have a JuiceBox 40 and after charging fine for weeks one day I startEd getting that error. Tried connecting and disconnecting the JuiceBox multiple times and it would just begin to ramp the current up and then the Jeep would shut things down. Took it to the dealership and they plugged it into their MOPAR lvl 2 and of course it charged right up, still had the CEL though so they pulled codes and saw an under threshold code and an over threshold code for the ECU (electrical charging unit), they didn’t have the trained hybrid tech in that day and said to bring it back when he’s around, still waiting on the call back but has been charging fine on JuiceBox since. Codes below:
1198
 

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Discussion Starter · #8 ·
We had this happen once to us, I have a JuiceBox 40 and after charging fine for weeks one day I startEd getting that error. Tried connecting and disconnecting the JuiceBox multiple times and it would just begin to ramp the current up and then the Jeep would shut things down. Took it to the dealership and they plugged it into their MOPAR lvl 2 and of course it charged right up, still had the CEL though so they pulled codes and saw an under threshold code and an over threshold code for the ECU (electrical charging unit), they didn’t have the trained hybrid tech in that day and said to bring it back when he’s around, still waiting on the call back but has been charging fine on JuiceBox since. Codes below: View attachment 1198
I think those are the same codes that mine was getting. I also have not heard back from them.
 

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Discussion Starter · #9 ·
Quick update on this issue. Neither jeep cares on this form nor the dealership have contacted me apparently they just want me to live with this problem. I’ve reached out to both to no avail.
 

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Discussion Starter · #10 ·
Another update. The problem still persists the dealership can’t figure it out, the engineers couldn’t figure it out and closed my star case. And jeep care calls me once a week to let me know that there is no updates.
 

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Has anyone seen this Service charging system message? My wife has a new 4xe and we keep getting this message followed by a check engine light. It seems to happen most often when we are charging the vehicle from 0%-10% charge with a level 2 charger. My charger has a readout of amperage and you can see the amps fluctuate from 0 to 30 before this error pops up and the car quits charging. I replaced the charger just to verify that it wasn’t the issue and I’ve taken it to the dealer and they say there’s something wrong with the charging system but they don’t know what it is. So they just gave me the car back And said they look into it and I have not heard anything back from them.
Oh Yay! I get to join the club. I received the same error message charging for the first time!
 

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Oh Yay! I get to join the club. I received the same error message charging for the first time!
Sorry to hear that. Feel free to send us a private message if you plan to visit the dealer.

Kate
Jeep Cares
 
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I receive the "Service Charging System" frequently when I have run down to "0%", but usually only when I have driven a longer distance. I normally charge with a level 2 charger, but when I charge with a level 1 charger I do not get this message. This is only an observation now, but I am continuing to do some testing to see if it is repeatable. Sad to see this for something that should no longer be an issue...
 

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Discussion Starter · #15 ·
So after many many tests and multiple visits to two different dealerships I have personally pinpointed the problem to the kilowatt hour received from 0 to 10% charge. I’ve replaced my charger multiple times and the current one that I have allows me to dictate the amperage. The issue comes up anytime I plug up to a stage 2 charger that puts out more than 7.5 kW. The factory charger will go up to 7.7 and the vehicle is supposed to be able to receive 7.7 kW. I have reduce the amperage to 31A on my current charger which does not exceed 7.3 kW. And I have not had the issue since then. This is not a fixed it’s just a workaround. One of the dealerships that I took it to their charger does not go over 7.4 kW which did not cause the error to happen. So I have to take it to the other dealership which has a factory charger and it has caused the error .
 

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It was an early June build and yes, I took it to the dealer and they found nothing. You would think that they would find an error code or something.

akasam That is interesting as that is pretty much what I am seeing, but only when I take it on a long trip which would drain that battery to a much lower level. For trips around 50 miles I do not see the issue. It appears that once I have a full charge from a level 1 charger, the issue goes away.

In any event, it should not be an issue. The tolerances should not be that small.
 

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Discussion Starter · #17 ·
The issue that I’m saying is that when the battery is at 0% and plugged to a level two charger with the capability of exceeding 7.5 kW the vehicle will request the maximum amount which is 7.7 this trips the error. The level one charger will not get to that level of kilowatts. And even a lot of level two chargers will not as well. As the battery becomes more full it requests less electricity from the charger therefore the error will not present itself. It only seems to happen when it requests the maximum amount of kilowatts which is from 0% to let’s say 5 to 10%. That’s why you notice it more on long trips because you deplete the battery to zero or less.
 

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Once it gets to that point where an error will occur with a level 2 charger, it will continue to occur until the battery has been charged to 10%. When this last occurred I charged my Jeep to 35% with a level one charger, and then switched back to a level two charger. This error continued to happen even when it was at 35% charge. I have to get to a 100% charge with my level one, before the level two will work.
 
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