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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...

There has been lots of talk and debate about what temperature the 4xe will no longer operate in electric mode. The general consensus and through testing is that -12c or 10f is the threshold for the vehicle to operate in electric mode from an Ambient temperature threshold (providing other...

Colder temperatures have finally arrived where I live and have allowed me to do some more testing with my 4xe and how it reacts and operates in cold weather. If you don’t want to read anymore I’ll summarize here. You can drive a 4xe in -20c weather with some tricks. A few weeks back I...

FORM analysis report after a few months of cold weather in SK Canada. The time from I’m referencing in this post is from early November until now. 2021 Sahara 4xe 1. Approximately 17000kms on the vehicle. 2. Has been in FORM since Nov 11, Has come out of Step 1 of FORM a few times, went from...

With all the cold temperature logging done I decided to go and take a drive and see what would happen. Surprisingly enough I got electric mode to work. I decided to drive out to my trailer at my lake lot and see how everything was with the 2 recent snow storms we’ve had. I drove in E-Save...

It’s taken me almost 9 months but I’ve finally figured out a way to tell if the ICE will start when the vehicle is started and whether electric mode is available BEFORE starting the vehicle. If you have a compatible Bluetooth OBD reader and software like OBDlink or J-Scan, it’s a single PID...

Another day another cold start except this one was very cold. (but I haven’t started it yet) Ambient temperature -17c (1f) Oil Temperature -16c (3f) HV Battery Temperature -11c (12f) Battery Coolant was -16c (3f) Obviously the ICE is going to start but I wanted to test the L1 ability to...

Lots of talk of defective battery coolant heaters in 4xes. Should you have J-Scan OBDlink Software and a Compatible Bluetooth adapter (I recommend OBDlink MX+) You can see how the battery coolant heater works and whether or not it's defective. As temperatures get colder I’m going to be...

If you were thinking about getting the Mopar Winter Front Cover for your 4xe it might be worth it. Here are some initial tests with in, keep in mind your results might not be the same as mine. Ambient temp was 8C and there was a crazy tail wind 70-80kms/h pushing me down the highway. Speed...

I have a Rubicon currently not in FORM and a Sahara Currently in Step 2 of FORM. I’ve logged PID parameters for months now trying to find out where the triggers are for FORM. My initial monitoring parameters seemed to not be the proper ones. Once my Sahara first went in to FORM a few weeks...

I had a chance to take my 2021 Sahara 4xe to the same track I raced my Rubicon 4xe at. Results were not what I expected in a good way. SIR Raceway. Density Altitude was 1950ft, track was prepped Race Weight 5292lbs, no weight reduction, each pass done in E-save mode. I would sit in the...

Since it has the 2.0 I figured i'd post it here I had a chance to go to the local track for a street legal drag racing night. Track was unprepped DA was 3700ft and my race weight was 5432lbs. 91 Octane 0 ethanol fuel. I made a total of 16 passes using various methods of launching and drive...

Having 2 4xe at varying states of mileage makes for some very interesting comparisons when it comes to all the parameters than can be monitored. I still haven’t given up on figuring out if there are timers for FORM. I was playing around with some parameters and now have some baseline data to...

7574kms i would estimate about 4000kms are electric For comparison my 2022 Rubicon 4xe 1.5 weeks old 700kms

I’ve got a little bit more concrete data on how/why the vehicle will not operate in Electric mode for various different reasons. I’ve made previous posts about how to tell whether you are in FORM or not. I also did a test tricking the Ambient temperature sensor in an effort to keep the vehicle...

After going through 100’s of PID’s I’ve finally found out how to Monitor FORM and the various parts of FORM when it’s active. I’ll try not to get overly technical but there is a way that you can monitor this and find out which FORM you are in or why you are getting EMU or EMU-CHOC and whether...

I’m getting closer to understanding how the 12v battery gets charged with the DC/DC charger and potentially uncovering a reason for why the 12v batteries are failing. I recently got a Odyssey Performance H7 Battery installed in my 2022 4xe and wanted to test out how well it would...

After picking up a second 4xe I've had a chance to do some more testing with how the DC/DC Charger handles charging the 12v in different circumstances. My first test was to compeltely drain the 12v battery to a point where it would be dead and unable to start the ICE, however I never ended up...

After reading a few posts about people commenting that their battery was draining while plugged in and remote started without ICE running I decided to do some monitoring of the charging system to confirm my theory that the onboard charger can’t keep the battery charged while plugged in during...

I’m sure everyone has seen Brandon Haneline’s video of him running a power inverter on his 4xe. This was a great video that showed how the HV battery topped up the smaller 12v battery (providing the HV battery had sufficient charge). The 4xe has a 2.5KW (2500w) DC/DC Charger/Converter which...