auxiliary battery CODE P058A

[quad cab]

how does one get behind the seatback on a 2023 quad cab to get to the auxiliary 12 volt battery. Mechanix at cdjr says i am not driving enough to keep battery charged. I am getting p058a code.

 

[Trooper4]

how does one get behind the seatback on a 2023 quad cab to get to the auxiliary 12 volt battery. Mechanix at cdjr says i am not driving enough to keep battery charged. I am getting p058a code.

Should be able to look on youtube for directions. Don't think it a 12v battery, although I could be wrong. I assume you have the e torque

 

[kapinallinen2]

how does one get behind the seatback on a 2023 quad cab to get to the auxiliary 12 volt battery. Mechanix at cdjr says i am not driving enough to keep battery charged. I am getting p058a code.

There is no AUX 12V battery behind the seat back.
You can get there by removing the seats and find a 48 volt battery pack that you can do nothing with. That should be covered for 80k miles under warranty?

As far as the DTC.

P058a code.

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

With the ignition on.

Battery voltage above 11.0 volts.

Set Conditions:

The Intelligent Battery Sensor (IBS) is reporting an internal calibration error or the signal is not available.

Default Actions:

This is a non-MIL fault.

Possible Causes

FUSED B+ CIRCUIT OPEN/HIGH RESISTANCE

GROUND CIRCUIT OPEN/HIGH RESISTANCE

INTELLIGENT BATTERY SENSOR (IBS)

 

[kapinallinen2]

how does one get behind the seatback on a 2023 quad cab to get to the auxiliary 12 volt battery. Mechanix at cdjr says i am not driving enough to keep battery charged. I am getting p058a code.

You should be under full warranty, why not let the dealer handle this?

 

[quad cab]

You should be under full warranty, why not let the dealer handle this?

because the dealer says he just wants to charge this battery and it is a 2 hour round trip, dealer said it would take about 4 hours to charge battery.

 

[Nascar Tommy]

because the dealer says he just wants to charge this battery and it is a 2 hour round trip, dealer said it would take about 4 hours to charge battery.

I would think the two hour drive and back should recharge everything.
I don't drive my etorque much either so I installed a Battery Tender jr. under the hood and plug it in when I'm not going to drive it for a while.
Also, I personally would replace the 12 volt battery also no matter if it tests good.
Etorqes are plagued with battery problems where the battery tests good but it is not.

 

[quad cab]

I would think the two hour drive and back should recharge everything.
I don't drive my etorque much either so I installed a Battery Tender jr. under the hood and plug it in when I'm not going to drive it for a while.
Also, I personally would replace the 12 volt battery also no matter if it tests good.
Etorqes are plagued with battery problems where the battery tests good but it is not.

did you have any problem getting the leads from the engine compartment , to the 12 volt auxiliary battery behind the rear seat? This is the battery the ram mechanic wants me to recharge. The truck has about 2800 miles.

 

[Nascar Tommy]

did you have any problem getting the leads from the engine compartment , to the 12 volt auxiliary battery behind the rear seat? This is the battery the ram mechanic wants me to recharge. The truck has about 2800 miles.

There is no 12 volt battery behind the seat. It is a 48 volt battery pack and you don't want to mess with it.
That battery gets charged by the 48 volt generator/motor as you drive. So the best way for you to charge this battery is a good long drive. 2-3 hours.
The 48 volt battery then constantly monitors the 12 volt battery and keeps it charged even while the truck is parked and sitting around, that is why yours discharged.
By hooking up the battery tender to the 12 volt under hood battery it will save the 48 volt battery from going dead trying to charge the 12 volt battery.
So you would simply hook up the battery tender to the 12 volt battery under the hood.
It was quite easy to just buy two metric nuts to add to the battery lugs
I installed the charger on otherside of engine bay and ran wires across the back, leads are quite long.
I had this truck in storage for 6 weeks while on vacation and no issues upon start up.
As stated earlier you may want to replace your battery because it was probably stressed. If you have any minor electrical quirks replace it even if it tests good.

 

[Jako]

There is no 12 volt battery behind the seat. It is a 48 volt battery pack and you don't want to mess with it.
That battery gets charged by the 48 volt generator/motor as you drive. So the best way for you to charge this battery is a good long drive. 2-3 hours.
The 48 volt battery then constantly monitors the 12 volt battery and keeps it charged even while the truck is parked and sitting around, that is why yours discharged.
By hooking up the battery tender to the 12 volt under hood battery it will save the 48 volt battery from going dead trying to charge the 12 volt battery.
So you would simply hook up the battery tender to the 12 volt battery under the hood.
It was quite easy to just buy two metric nuts to add to the battery lugs
I installed the charger on otherside of engine bay and ran wires across the back, leads are quite long.
I had this truck in storage for 6 weeks while on vacation and no issues upon start up.

Some info about where to connect the ground (-) wire, Mopar and Deltran instructions/info (body/chassis ground) are in the below thread.

Resetting battery life in ECU when changed

My experience was very similar. 2021 model that failed at 25 months. I also kept on a trickle charger. Depending on the trickle charger and it's circuitry, it's possible you were overcharging the battery which could lead to early battery failure. If it doesn't have circuitry to sense the...

5thgenrams.com

 

[Nascar Tommy]

Some info about where to connect the ground (-) wire, Mopar and Deltran instructions/info (body/chassis ground) are in the below thread.

Resetting battery life in ECU when changed

My experience was very similar. 2021 model that failed at 25 months. I also kept on a trickle charger. Depending on the trickle charger and it's circuitry, it's possible you were overcharging the battery which could lead to early battery failure. If it doesn't have circuitry to sense the...

5thgenrams.com

Thanks for the info. I just went out and changed the location of the battery maintainers negative lead.

 

[quad cab]

okay, next question I cant find fuse labeled start/stop to disable this whole stupid system. I assume that is where the code P058A is coming from?