Has anyone actually regeared their 4xe? Any issues?

[leeshuming]

Please advise.

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[JLJeepGuy513]

no different than any other jeep

 

[dlong1119]

no different than any other jeep

Not true... If you have a 2021 or 2022 4xe you'll need the dealer to perform a software update TSB to allow for gears above 4.50 to be programmed in. They generally won't just do it because you asked, you have to essentially "complain" about the brake pedal feeling spongy. The update makes some changes to the ABS pump if I recall correctly, but be aware that a few people (myself included) have noticed the brakes being quicker to lock up, especially on wet roads, under moderate braking.

Search my comments, I've posted a link to the TSB and more info in a thread not that long ago. Also, I've had the update done but haven't installed my new gears yet. I'm trying to get my battery issue sorted out before installing $3k worth of stuff in my axles just in case I get fed up with Stellantis jerking me around and dump the Jeep.

 

[leeshuming]

Not true... If you have a 2021 or 2022 4xe you'll need the dealer to perform a software update TSB to allow for gears above 4.50 to be programmed in. They generally won't just do it because you asked, you have to essentially "complain" about the brake pedal feeling spongy. The update makes some changes to the ABS pump if I recall correctly, but be aware that a few people (myself included) have noticed the brakes being quicker to lock up, especially on wet roads, under moderate braking.

Search my comments, I've posted a link to the TSB and more info in a thread not that long ago. Also, I've had the update done but haven't installed my new gears yet. I'm trying to get my battery issue sorted out before installing $3k worth of stuff in my axles just in case I get fed up with Stellantis jerking me around and dump the Jeep.

What was wrong with your battery?

This past Saturday, I went off roading and as i was driving/passing through some water in a lake, my "Service Hybrid Electric Vehicle System" message popped out, along with CEL, the red wrench, and then eventually losing FCC and cruise control.
Of course, then I was not able to drive in electric, was forced into driving in e-save or hybrid mode. The "Electric not available" message shortly came on later.

While I was in e-save (4L), the Jeep was moving in "hybrid" mode..and some times as if max regen was on.. just very weird. I tried to clear the code with my tazer but it didn't work.

I drove home safely and was able to charge the hybrid battery with the stock charger. I also checked my 12V and everything else was fine (fuses and so forth).

I then used the BlueDriver to scan and found 2 codes.. P066A and P0e15.. not happy. I don't care about P0E15, because i know i can still drive my Jeep. However, the P066A, as i have read on the forum, could be a nightmare to fix.

Oh well, I have actually regeared my '22 about 2 weeks ago, but I hadn't really driven it until the past weekend. I know, the regearing should have nothing to do with codes, but i just wanted to ask.

Anyway, I went to my regearing shop... The guys there used the expensive Snap-on OBD scanner and cleared the codes for me, and everything is now fine again; or at least I can switch and use electric/hybrid/e-save mode.

I have a Moab and Colorado trip in less than 3 weeks, I don't want to risk the dealer grounding my Jeep, because of the "service hybrid system", as this is what they would do due to liability reasons.

Anyway, I have it regeared to 4.88. I am loving it. I am easily seeing 8th on the highway, and the torque when crawling is just absolutely powerful (gas mode). I run 37s and carry tons of gear in my Jeep, I truly wished I should have done this earlier.

And yeah, I had the TSB done last year but waited recently to regear due to fear of problems. I should have done it earlier.

btw, one of my regearing guys had just installed the new Z-automotive "Nolimitz JL" mod on his 4xe. It removes torque/speed limits even in Electric mode, and it would give our 4xe better crawling power as well as top speed (4H). Well, I have not looked into this in detail yet, but I believe it eliminates speed or torque limits.

Just something to share.


Edit - yes, braking is noticeably different now. it seems like the brakes are more sensitive now than pre-regear. under 4L, I now have to press harder on the brake, especially because the torque is so much and the Jeep just wants to go. I think my next upgrade would need to be the Teraflex Delta brakes.
It's summer now and there is no rain. In 2 months, i will know what the braking would be like in wet conditions as I live in the PNW rain forest.

tks all

 

[dlong1119]

I'm getting very poor range (10-15 miles), occasionally odd charging (plugged in all weekend then only at 90-95% when it says fully charged), low electric power sometimes, frequently switching to Hybrid from Electric with plenty of battery left and no reason for it (hadn't been driving high speeds, etc) and the P0BBD code which indicates "Hybrid Battery Pack Voltage Variation Exceeded Limit" and I've been told is essentially 100% indicative of a bad battery. I also had one time with multiple errors, the service charging system message, and the Jeep wouldn't start or charge even after clearing the codes.

I've now been into the dealer multiple times for it. The first time I'd had to clear the codes attempting to be able to drive the Jeep so there was no proof as everything had normalized by that point (several hours after clearing). Then there were software updates done as part of the recalls so it was blamed on that. The next time they agreed it was the battery and opened a STAR case to get approval for the replacement but it was denied by Stellantis because it was just showing a "stored" code and not an "active" code. I was told to bring it back immediately when it happened again, which of course was at 8pm after they were closed for the weekend. By the time I got in the code was just "stored" again and the CEL wasn't even on but they documented it. I left the dealer and it came back on (along with switching to Hybrid with 20% charge) within about 3 miles so I turned around and went straight back without even shutting the Jeep off, but it was again just showing a stored code and I was told to try again the next time it happened as they didn't even have a loaner to put me in.

Aside from the battery issue, I absolutely love the Jeep and just want it fixed, as I'm pretty confident a battery replacement will fix all the problems.

As for yours, I assume you reprogrammed for the gearing change? I can't wait to get mine done, as I really miss the power. I've got 3.73s and am running a 35.1" tall tire, so it's pretty noticeable around town when in Electric mode.

 

[Javikid]

I got the software update TSB today from my local dealership. Time to regear for those 40s

 

[leeshuming]

I'm getting very poor range (10-15 miles), occasionally odd charging (plugged in all weekend then only at 90-95% when it says fully charged), low electric power sometimes, frequently switching to Hybrid from Electric with plenty of battery left and no reason for it (hadn't been driving high speeds, etc) and the P0BBD code which indicates "Hybrid Battery Pack Voltage Variation Exceeded Limit" and I've been told is essentially 100% indicative of a bad battery. I also had one time with multiple errors, the service charging system message, and the Jeep wouldn't start or charge even after clearing the codes.

I've now been into the dealer multiple times for it. The first time I'd had to clear the codes attempting to be able to drive the Jeep so there was no proof as everything had normalized by that point (several hours after clearing). Then there were software updates done as part of the recalls so it was blamed on that. The next time they agreed it was the battery and opened a STAR case to get approval for the replacement but it was denied by Stellantis because it was just showing a "stored" code and not an "active" code. I was told to bring it back immediately when it happened again, which of course was at 8pm after they were closed for the weekend. By the time I got in the code was just "stored" again and the CEL wasn't even on but they documented it. I left the dealer and it came back on (along with switching to Hybrid with 20% charge) within about 3 miles so I turned around and went straight back without even shutting the Jeep off, but it was again just showing a stored code and I was told to try again the next time it happened as they didn't even have a loaner to put me in.

Aside from the battery issue, I absolutely love the Jeep and just want it fixed, as I'm pretty confident a battery replacement will fix all the problems.

As for yours, I assume you reprogrammed for the gearing change? I can't wait to get mine done, as I really miss the power. I've got 3.73s and am running a 35.1" tall tire, so it's pretty noticeable around town when in Electric mode.

I just recently got a CEL where it said service Hybrid electrical system. I wasn't able to clear it with my tazer but was eventually cleared (sort of) when I took it to my mechanic.

Then I finally have the electric cabin heat unavailable (or something like that). I still drive it, just that things have become weird. Electric driving under E-save, gas mode under "hybrid".

I'm getting very poor range (10-15 miles), occasionally odd charging (plugged in all weekend then only at 90-95% when it says fully charged), low electric power sometimes, frequently switching to Hybrid from Electric with plenty of battery left and no reason for it (hadn't been driving high speeds, etc) and the P0BBD code which indicates "Hybrid Battery Pack Voltage Variation Exceeded Limit" and I've been told is essentially 100% indicative of a bad battery. I also had one time with multiple errors, the service charging system message, and the Jeep wouldn't start or charge even after clearing the codes.

I've now been into the dealer multiple times for it. The first time I'd had to clear the codes attempting to be able to drive the Jeep so there was no proof as everything had normalized by that point (several hours after clearing). Then there were software updates done as part of the recalls so it was blamed on that. The next time they agreed it was the battery and opened a STAR case to get approval for the replacement but it was denied by Stellantis because it was just showing a "stored" code and not an "active" code. I was told to bring it back immediately when it happened again, which of course was at 8pm after they were closed for the weekend. By the time I got in the code was just "stored" again and the CEL wasn't even on but they documented it. I left the dealer and it came back on (along with switching to Hybrid with 20% charge) within about 3 miles so I turned around and went straight back without even shutting the Jeep off, but it was again just showing a stored code and I was told to try again the next time it happened as they didn't even have a loaner to put me in.

Aside from the battery issue, I absolutely love the Jeep and just want it fixed, as I'm pretty confident a battery replacement will fix all the problems.

As for yours, I assume you reprogrammed for the gearing change? I can't wait to get mine done, as I really miss the power. I've got 3.73s and am running a 35.1" tall tire, so it's pretty noticeable around town when in Electric mode.

I got this code P0E15, I think the electric"A" is messed up.

It seems that it is very common at around 20k-30k miles, and is causing my problems. Of course this is just my guess.


This video talks about it.

I can still drive in gas mode, just that sometimes even in gas mode I would run with electric. It's weird.

I have a Moab trip in a week.. I will bring it to my dealer after that. I mean if it is something else, in relation the HV battery, the dealer can ground my Jeep due to "safety"'s concern.

I planned my Moab trip a year ago.. I am going.

 

[R3TRO]

Man you guys are really talking me out of looking into a 4xe! I like the idea of it, but not the inherent issues that it might come with. Maybe if they ever do an update some of these issues will be addressed? I'd really like more electric range... 50mi would be good.

 

[Panda Mafia]

Zero issues for me and as always knock on wood. 2022 here with 45k KM. Always do my own oil changes, always remote start the jeep before I go even if it's 100 degrees outside. Something nice about remote starting the vehicle in a garage and not having all the smoke in it. Most of the time the jeep is plugged in, even at 100% battery. Range has not dropped at all, may be im crazy but seams better now.

You would not get me into 3.6 or 2.0. No way. I love the power too much. The electric mode when I have it is useful. Love cruising in silence in the neighbourhood and on the trails. I wish it was fully electrical just cause it's annoying as hell to play the battery save game. Will I make it there on one charge etc.. =)

It does not mean I don't want 392. Total opposite but it's the last v8. I could keep it forever. I can become of those old guys in movies who work on their old v8 vehicles in a garage lol. Everything will be going electric anyway there will be plenty more time to have phev jeep. Sadly the pricing on new 392s are insane.

 

[dlong1119]

I just recently got a CEL where it said service Hybrid electrical system. I wasn't able to clear it with my tazer but was eventually cleared (sort of) when I took it to my mechanic.

Then I finally have the electric cabin heat unavailable (or something like that). I still drive it, just that things have become weird. Electric driving under E-save, gas mode under "hybrid".

I got this code P0E15, I think the electric"A" is messed up.

It seems that it is very common at around 20k-30k miles, and is causing my problems. Of course this is just my guess.


This video talks about it.

I can still drive in gas mode, just that sometimes even in gas mode I would run with electric. It's weird.

I have a Moab trip in a week.. I will bring it to my dealer after that. I mean if it is something else, in relation the HV battery, the dealer can ground my Jeep due to "safety"'s concern.

I planned my Moab trip a year ago.. I am going.

Yeah, your Electric Coolant Heater A has failed and needs to be replaced. Happened to both of my 4xes within about 2-3 weeks of each other back around November, one at 18k and one at 25k. Dealer got the parts pretty quickly and had them both fixed up in a few days. We drove them while waiting for the parts, some odd behavior but no big deal. Just run it, should be fine.

 

[dlong1119]

Man you guys are really talking me out of looking into a 4xe! I like the idea of it, but not the inherent issues that it might come with. Maybe if they ever do an update some of these issues will be addressed? I'd really like more electric range... 50mi would be good.

I love a lot of things about mine, but am getting a little soured with the runaround Stellantis is giving on replacing my HV battery. We leased one and had very few issues, all of which were fixed quickly, but turned it in back in May for a better family road trip vehicle. I bought mine used last year (got a great deal on it) and am now having battery issues. Thankfully I've got the 10yr/100k battery warranty since it's a 2021, plus I've got MaxCare on it, so it's not really costing me anything other than some frustration. I put very few miles on it and work from home so dealing with the issues hasn't been terrible.

50 miles of range would be incredible but don't hold your breath on that one for probably 5-10 years at best.

 

[alphawolff]

I just recently got a CEL where it said service Hybrid electrical system. I wasn't able to clear it with my tazer but was eventually cleared (sort of) when I took it to my mechanic.

Then I finally have the electric cabin heat unavailable (or something like that). I still drive it, just that things have become weird. Electric driving under E-save, gas mode under "hybrid".

I got this code P0E15, I think the electric"A" is messed up.

It seems that it is very common at around 20k-30k miles, and is causing my problems. Of course this is just my guess.


This video talks about it.

I can still drive in gas mode, just that sometimes even in gas mode I would run with electric. It's weird.

I have a Moab trip in a week.. I will bring it to my dealer after that. I mean if it is something else, in relation the HV battery, the dealer can ground my Jeep due to "safety"'s concern.

I planned my Moab trip a year ago.. I am going.

I've replaced like 500 electric coolant heaters at this point. It isn't a safety issue, you just won't have heat in electric mode. It's either horrendous software or a faulty component. Considering they fail in the hybrid pacificas and grand cherokees as well I'm going to lean towards a defective design.

It's covered under the hybrid warranty

Man you guys are really talking me out of looking into a 4xe! I like the idea of it, but not the inherent issues that it might come with. Maybe if they ever do an update some of these issues will be addressed? I'd really like more electric range... 50mi would be good.

4XEs are like the most unreliable wrangler ever produced. They are absolute piles of shit reliability wise, but are fantastic when they're working properly. Just about everything will be covered under warranty, it just depends on your tolerance for how often you're ok with leaving it at the dealer.

They also have a tendency to explode, but that's rare. if you buy one I strongly suggest leasing it. Under no circumstances should you own one outside of the hybrid warranty (10 yrs/150k here in cali).

I love a lot of things about mine, but am getting a little soured with the runaround Stellantis is giving on replacing my HV battery. We leased one and had very few issues, all of which were fixed quickly, but turned it in back in May for a better family road trip vehicle. I bought mine used last year (got a great deal on it) and am now having battery issues. Thankfully I've got the 10yr/100k battery warranty since it's a 2021, plus I've got MaxCare on it, so it's not really costing me anything other than some frustration. I put very few miles on it and work from home so dealing with the issues hasn't been terrible.

50 miles of range would be incredible but don't hold your breath on that one for probably 5-10 years at best.

This is usually the story. It really comes down to how much you're willing to let it sit at the dealer. Everything is usually covered so out of pocket expense for repairs is zero assuming you have a second vehicle to drive.

I've been having issues with the supplier/STAR cancelling battery orders forcing us to reorder them. Usually a HV battery replacement takes a minimum of 30 days. I've had them take up to three months before the battery finally arrives due to bullshit on STARs end. Sometimes you submit the case and it takes them over a week before they confirm they've even placed the order.

 

[leeshuming]

Well, I have spent so much on my 4xe that I feel like I would be wasting more money if I were to trade/sell it at this moment.

I was thinking of keeping it till the next generation, probably for another 5 years, before the HV warranty is over.

But looking at the way I wheel it, I don't think it could last that long.

I have even ask my local mechanic, they install America most wanted V8s if it would be able for me to upgrade, but it seems like there isn't a kit or something like that's out there.

Honestly, upon further questioning, they just told me that they hate upgrading from a 2.0L to a V8. Since I would be getting a new engine and stuff, I couldn't understand why it couldn't be done. Anyways...

I have committed to buy a 2dr Rubicon sometime in the near future, maybe even a manual one because I think the manual transmission is really a dying breed.

Would I buy a full electric wrangler in the future? Absolutely no.
Would I buy the next 4xe hybrid generation? Doubtful.

Stellantis still doesn't know how to build a reliable plugin hybrid...

Oh well, I should have purchased the V8 back then when it was at least 20% cheaper than today's pricing.
I kinda regret it everyday.

 

[Kashmir8]

Yeah, your Electric Coolant Heater A has failed and needs to be replaced. Happened to both of my 4xes within about 2-3 weeks of each other back around November, one at 18k and one at 25k. Dealer got the parts pretty quickly and had them both fixed up in a few days. We drove them while waiting for the parts, some odd behavior but no big deal. Just run it, should be fine.

Same thing here, 21k. Drove it for at least 1000 miles between coming on and getting appointment. In and out in 2 days with the replacement ECH A.

 

[Storm Cloud]

I regeared my 2023 today to 4.88 and it was simple with no issues yet. I just had to update settings with my JScan and so far so good. I’ll update as time goes on.

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