E torque have start/stop aux battery?

[Jammerdave]

I have a 2021 wrangler JI with e torque V6. Does it have a aux battery? There is no second ground on the battery and no # 42 fuse.-TIA

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[Terrymo]

Your secondary or auxillary battery is the 48 volt etorque battery under the Jeep. About the size of a small suitcase and covered by a skid plate. Not serviceable by the vast majority of us, and has an extended warranty.

 

[Jammerdave]

Thank you, is it notorious for doing the same thing? Discharging the main battery?

 

[Terrymo]

Thank you, is it notorious for doing the same thing? Discharging the main battery?

I’m not an expert but I will say no. If you have issues it could be time for a new main battery or you have some unusual parasitic power draw from something when the Jeep is off.

 

[KHR Racing]

We have a 2022 e torque….. No Aux battery…. Unless you Count that big 48 V one in the rear behind the driver seat…….

 

[Pape]

The 48v is not "engaged" when the jeep is off therfore parasitic draw will not affect it.
On a side note the thing hate cold weather.

 

[Jammerdave]

The 48v is not "engaged" when the jeep is off therfore parasitic draw will not affect it.
On a side note the thing hate cold weather.

Thank you, Good to know!!

 

[LARSONEM]

The 48v is not "engaged" when the jeep is off therfore parasitic draw will not affect it.
On a side note the thing hate cold weather.

How do you figure it hates cold weather. I have one in my 2021 Willys that is my winter driver. It functions fine in Michigan’s cold winters. I also have one in my 2022 Rubicon that has never seen winter, snow or salt. I’m no expert in the E-Torque system, but if you study some of the components you’ll see that it has its own cooling system under the hood. In terms of cold weather, I don’t know why it would be any different than a 12v battery.

 

[Pape]

How do you figure it hates cold weather. I have one in my 2021 Willys that is my winter driver. It functions fine in Michigan’s cold winters. I also have one in my 2022 Rubicon that has never seen winter, snow or salt. I’m no expert in the E-Torque system, but if you study some of the components you’ll see that it has its own cooling system under the hood. In terms of cold weather, I don’t know why it would be any different than a 12v battery.

From personal observations, each time the weather get colder than 5f the start/stop will just not work. All functions continue to work ok but start/stop just don't. Even if I drive for two hours on the highway soon that I get to a stop my start stop will become not ready instead of engaging. If the next day it get warmer after reaching operating temperature all good.
No check engine or code. This is being goings since new and I'm now in winter number two. This why I say it does not like cold.

 

[LARSONEM]

From personal observations, each time the weather get colder than 5f the start/stop will just not work. All functions continue to work ok but start/stop just don't. Even if I drive for two hours on the highway soon that I get to a stop my start stop will become not ready instead of engaging. If the next day it get warmer after reaching operating temperature all good.
No check engine or code. This is being goings since new and I'm now in winter number two. This why I say it does not like cold.

Interesting. I’ve not experienced that but I’m not surprised. If I back out of the garage and head for the road to stop while I wait for traffic, the engine won’t shut off. Same for going a quarter mile down the road to the first stop sign. The vehicle doesn’t go through auto start/stop cycles until the engine is up to operating temperature. I believe there’s a message that displays in the information center telling the driver “auto start/stop disable not up to operating temperature”. It only makes sense because a hot engine produces less emissions than and engine still warming up. Obviously there’s a threshold where you disable the system to be able to provide creature comforts inside the passenger cabin. Also cranking amps increase when the temperature goes down. Stopping the auto start stop saves battery power at a time when critical battery power may be needed to restart the vehicle.

 

[Tncdrew]

From personal observations, each time the weather get colder than 5f the start/stop will just not work. All functions continue to work ok but start/stop just don't. Even if I drive for two hours on the highway soon that I get to a stop my start stop will become not ready instead of engaging. If the next day it get warmer after reaching operating temperature all good.
No check engine or code. This is being goings since new and I'm now in winter number two. This why I say it does not like cold.

And, the start/stop system not working in cold temps is a problem??
Seriously?

 

[LARSONEM]

And, the start/stop system not working in cold temps is a problem??
Seriously?

You are correct. I have a Tazer in both Jeeps so the auto stop start is off in mine anyway. The auto stop start is aggravating as all get out. But occasionally my wife hits the wrong button turning the heated seat off when she’s driving. Usually it’s the one for auto stop start which means it gets turned back on and me being the next person to drive wonders why the Jeep shut off at the next stop. Of course I just turn it back off.

 

[Pape]

Interesting. I’ve not experienced that but I’m not surprised. If I back out of the garage and head for the road to stop while I wait for traffic, the engine won’t shut off. Same for going a quarter mile down the road to the first stop sign. The vehicle doesn’t go through auto start/stop cycles until the engine is up to operating temperature. I believe there’s a message that displays in the information center telling the driver “auto start/stop disable not up to operating temperature”. It only makes sense because a hot engine produces less emissions than and engine still warming up. Obviously there’s a threshold where you disable the system to be able to provide creature comforts inside the passenger cabin. Also cranking amps increase when the temperature goes down. Stopping the auto start stop saves battery power at a time when critical battery power may be needed to restart the vehicle.

The power for the start stop is coming from the 48V, normal start is coming from the 12v.
The behavior is: once the engine is at operating temperature so is the cabin I will have start stop ready. When I got close to a full stop where it should engage the message change to start stop not ready and keep the engine running while at a stop. Will pull of the stop and the message will display start stop ready until I want to stop again and it will change again at not ready.

So far my assumption is the battery cannot warm enough under the jeep and the system find out moment before engaging.

And, the start/stop system not working in cold temps is a problem??
Seriously?

Just out of curiosity, you got one ? Was it by choice or came with the jeep ?

 

[Fiteacher]

So there’s only the main battery to change when one needs to replace the battery if I have the etorque?

Just double checking because I’m getting the “aux switches unavailable battery charging” pop up on start.

I have a 21 JLUR with etorque at just over 28k miles. Guessing it’s time to replace. Just want to verify whether it I need to replace 1 or 2 batteries on the etorque.

Thanks!

 

[Terrymo]

So there’s only the main battery to change when one needs to replace the battery if I have the etorque?

Just double checking because I’m getting the “aux switches unavailable battery charging” pop up on start.

I have a 21 JLUR with etorque at just over 28k miles. Guessing it’s time to replace. Just want to verify whether it I need to replace 1 or 2 batteries on the etorque.

Thanks!

The secondary 48volt etorque battery under your Jeep has an 8 year/80k mile warranty.
It is generally considered not serviceable by the end user. It’s most likely your 12 volt main battery is the issue especially if you still have the factory original battery.

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