2.0T Only has ONE battery?

[Redbaron73]

Genesis guy may be smart, but he is still wrong.

2.0T ESS has small battery under main.

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[4doorturbo]

So, when I disconnect the ground on the primary battery will it also disconnect the aux battery as well? Assume they are wired in parallel?

 

[JaysJL]

It’s located right below the normal battery a real pita to get out if it’s dead

 

[Rhinebeck01]

It’s located right below the normal battery a real pita to get out if it’s dead

@JaysJL

Actually, the 12Ah 200CCA AGM, Aux battery, if your JL ha one is located directly under the Power Distribution Center and not under the Main battery.

It's not that bad to access via front fender flare pull.. but sure not as easy to get to as the Main battery.

 

[Rhinebeck01]

For those that would like to know what exactly you have equipment wise to include batteries, you can click on this link and then insert your JL's, VIN # at the end of the link and press Enter on your keyboard again..... You will then be given your JL's equipment list in PDF form which you can save and or print out.

https://www.jeep.com/webselfservice/BuildSheetServlet?vin=

 

[SirMagnus89]

Simple solution. look under your own hood and do alittle digging for the second battery......

 

[Rhinebeck01]

Simple solution. look under your own hood and do alittle digging for the second battery......

@SirMagnus89

Funny..... it is not that easy.... You cannot see the Aux battery when you look into the engine compartment. You'd have to do a lot more then "a little digging" to see/find the Aux battery...

 

[OMTBiker]

Genesis guy may be smart, but he is still wrong.

2.0T ESS has small battery under main.

The *only* production jeep JL without aux battery is the 3.0L, without ess.

The 3.0L has ESS and a second battery as well.

 

[Redbaron73]

The 3.0L has ESS and a second battery as well.

Yup, guess I rememberd that one wrong.

 

[johnnyj]

Jack the Jeep. Pull the passenger wheel. Peel back the fender liner. =)

 

[Jebiruph]

When the 2.0 T first came out, they were only Etorque with no second battery, so it depends one when the battery question was asked. Originally the 3.6 was the only engine with ESS, that's why the majority of ESS discussion is in the 3.6 forum.

 

[MattT69]

Hahah I’m sorry I’m just trying to provide factual information for everyone’s benefit!

Many people will assume they only have one battery because the non-etorque auxiliary battery is underneath the power distribution box in an extremely terrible location and it isn’t visible at all when looking in the engine compartment. But I assure you, if you have ESS, you have the second auxiliary battery.

So when they install the Genesis dual battery system , they remove the aux battery and it gets replaced with the top mounted aux battery. Which is a better location.

Also what is the purpose of these extra batteries (aux and 48v e torque)?(I have e torque that why I ask) And which one is required to start the main one or is the main one used to start the engine without the help from the others?

 

[MattT69]

When the 2.0 T first came out, they were only Etorque with no second battery, so it depends one when the battery question was asked. Originally the 3.6 was the only engine with ESS, that's why the majority of ESS discussion is in the 3.6 forum.

So how does ESS system get its power? From the 48v e torque battery?
Also what is the purpose of adding the small aux battery in latter models???

 

[OMTBiker]

So how does ESS system get its power? From the 48v e torque battery?
Also what is the purpose of adding the small aux battery in latter models???

The ESS uses the 48v battery when the engine has eTorque, the 2.0 eTorque was dropped and replaced with just ESS.

To break this down, all Wranglers have 2 batteries.

Regular ESS models have the main 12v and small 12v auxiliary battery
eTorque models have the main 12v and 48v secondary battery.

HTH

 

[four low]

Even for the 2021 ? Maybe they went back to the one battery, like the older ESS Cherokee,would explain Genesis reply

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