ess

I have a 2022 JLR 2.0 that I have now owned 38 months and have 23k miles on it. I have the tow package with the upgraded battery and alternator. I know 3 years is typically when the auxiliary batteries fail. I have had no issues and typically I’m between 13.8 and 14.4 volts while the engine is...

Having read several highly informative posts about AUX battery issues on this forum, I strongly suspect I too am victim of the same. I thought I will share my symptoms and seek second opinion. Do you concur, the following behavior most likely indicates a failing Aux battery? 1. 2021 JLU...

Even though this is not on a Wrangler JL the ESS system is still the same. I'm not an electronics expert but I like to play around with things, and try out 12v things other may not have tried yet. Nearly 2 years ago I purchased an automotive grade Lifepo4e battery and was going to use it in...

Hi! I was parked with my 2019 wrangler unlimited off, and it would not start. My brake pedal felt stiff and when pressing the push to start it clicked once, lit up the dash but never turned over to start the engine. I got a jump and was able to get the car fully on. I drove around for ~30 mins...

Jan/2023 traveling at 55mph, a vehicle swerved into my lane which required immediate braking. Applying the brake, my 2022 Jeep Wrangler's engine surged, and Jeep would not slow down. I reapplied brake and initially it didn't slow my vehicle. After re-reapplying the brakes, the Jeep responded to...

I’ve tried looking for answers but can’t quite find what I'm experiencing. Last week my Jeep (2018 JLU 2.0 eTorque) while I was in traffic, threw up an “auto start/stop stopped working” message. Yellow @!. Then when that occurred the jeep began to shake as it was in idle. I then stepped on the...

Picked up my 2022 JLR with the 2.0T on January 29, 2022 and have driven the snot out of it ever since! My goal for this post is to help people struggling between the 2.0T and 3.6L with an honest, real-world review without a lot of the typical noise. I feel that most people have extremely strong...

wrangler jl ‘18 sport auto Recently ever so often when I stop at a red light my JL turns off and a “shift to park” message comes up on dash. The ESS is turned off. For the first 3 times this happened I shifted to park and was able to turn the jeep back on. Yesterday it happened and I shifted to...

I have a 2019 Rubicon with 31k miles. The “A” with a circular arrow and exclamation in yellow light turned on last month. 3weeks later I had several lights, errors/service messages pop up on my dash. Eventually giving me several issues and also making the Jeep not drivable. Stalled will I was...

I’m new to this Forum I’m going to try to be as detailed as possible, but anyways I have a 2018 Jeep JL Sport, manual transmission 40,000mi, just out of warranty. A few weeks ago I started my Jeep, all of my dash light came on: ABS, service 4WD, service Stability control, Brake, Start Stop, and...

For those who haven't seen it yet, in this video a Chrysler engineer explains what eTorque is, how it works, and what it does. I found it really helpful, so figured I would share. This is in a Ram 1500, but it's basically the same system as in the Wrangler. Since Jeep doesn't really explain...

I've been looking at the eTorque schematics and noticed that the eTorque systems do not make use of the fuse array ESS fuse that connects to PDC terminal N3. This is the most commonly blown fuse on the ESS systems, it blows when the main battery positive terminal touches ground with the aux...

So, I've been having this problem every time I go wheeling lately. Once I get back to pavement and I go to turn traction control back on it will turn on initially, but when I stop and the engine shuts off with the automatic start stop the traction control turns it self back off as soon as the...

The system previously threw warnings to service the ESS. Taken to the dealer under warranty and they did a software update. It no longer tells me to service the system but has not worked once since the update. It seems it has a full list of excuses of why it is not working instead. I really...

Hey everyone, I have a rather strange issue that I have not seen elsewhere on the forum that I am hoping someone can help with. I just installed the Mopar AUX switch kit in my 2019 JLU and I used the Tazer JL (version 11.1.5) to enable the switches in the Uconnect menu. Double checked my work...

Hi everyone, I have a 2020 Unlimited Rubicon with the EcoDiesel engine. The issue: When stopped in traffic, the ESS system did as designed shutting the engine off. When the light turned green and releasing the brake, the engine did not turn on. Hitting the gas multiple times did nothing...

When my 2018 JLU was at the dealers for the steering stabilizer recall, I asked about updating the radio firmware to fix some issues I was having (5" radio). They updated the PCM, ABS and radio firmware. Yesterday I noticed the low speed surging was gone, so today I tested starting with aux...

A few days ago a picture was posted on another thread (https://www.jlwranglerforums.com/forum/threads/quirks-not-addressed-in-user-guide.40684/page-6#post-922367) that showed a jump start related addendum to the owners manual that states "Only use the positive battery post on the main battery...

Anyone able to let me know if this sounds normal? The (winding down/up, clicking) noise, almost sounds like a hard drive or something. It must be coming from the ESS system as I do not hear this when I turn it off.

So i brought my 2019 Wrangler Rubicon with 15 miles yesterday and before even driving off the lot i noticed a light which at the time i didn't know what it meant so didn't pay much attention to it. When i got home i looked it up and noticed it was the service ESS light and the service ESC light...