4xe questions

[BXFXJeep]

I read that this is in 2H unless needed, but when I look at the regenerate screen it shows power being sent to the front wheels when it is not needed. I also have not observed more power in this mode but have not really played with it.

Those screens are more for gimmicks.

Once the gas engine is running I take it off Max Regen, for the most part I don't use Max Regen because the 4xe will not coast, you have to keep pushing the pedal to move. Max Regen prevents coasting on the highway, which I tend to do, even on city streets I coast.

I mostly only use Max Regen if I'm driving aggressive on city streets.

The battery gauge should really be looked at as <1% - 100% Mileage Range vs battery level.

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[C.Sco]

0% battery shown on the display means there's ~20% battery left in reality. The % indicator is only showing how much battery is remaining for EV mode. When it reaches 0%, it means there is none left for EV mode, however in reality there's still 20% or so for the Jeep to use for regular hybrid driving. The 4xe will never let the battery reach a true 0%. When it gets below probably 5% or so, it just stops using the hybrid battery at all and forces the drivetrain to use only the ICE engine until it recovers enough battery charge to resume normal hybrid driving. I've noticed this happen a few times on long uphill highway pulls, at a certain point the drivetrain just says "ok no more electric power for you; we're giving the battery a break for a while and you're just going to have to climb the rest of this hill on gas alone." And you can tell, because there is a noticeable loss in torque when it happens. It's not something you'll encounter usually in day to day driving, it takes a pretty serious uphill stretch at highway speeds for many miles before it gets to that point.

To add to what I wrote above, Jeep handles the PHEV battery % indication in a weird way. The PHEV I owned before this, a Kia, handled it much better in my opinion. The battery display looked like this:

The battery level indicator is above the 533km text. It shows that actual, real battery charge level, with the 25-100% level being highlighted in blue, showing the amount of battery remaining for dedicated EV driving, with an estimated EV range under it. The 0-25% level is white, and shows what's reserved for regular hybrid mode driving.

It is much more clear, looking at this display, that even though you've exhausted the EV range of the battery, you've still got 25% left (or in the case of this photo above, probably more like 18%).

Jeep's vague way of doing it, calling any battery level in the 0-25% range "<1%", is very confusing and doesn't really give the driver the whole picture about what's going on with the battery. I have no idea why Jeep decided to do it that way, but I wish they'd take a cue from Kia in this case.

 

[Inkhero]

Isn't this kind of...pointless? I could be incorrect, but I assumed that 4H Auto mode effectively switches to 2H anyway, unless 4-wheel traction is needed (for instance, upon heavy acceleration). And why would you be switching to 2H anyway - potential fuel savings?

Correct on paper 4H Auto is supposed to be running in 2H, unless 4H is needed. It may be redundant to throw it up in 2H, but I just do it on highway drives to keep things simple, and to not use the front driveshaft and other components when I don't really need them. The theory in my head is: less moving parts means less wear and potential damage. 2H ensures those parts aren't moving, so consider it just peace of mind.

 

[ras815]

The theory in my head is: less moving parts means less wear and potential damage. 2H ensures those parts aren't moving, so consider it just peace of mind.

I'd look at it the opposite way: I'd rather have the piece of mind of 4H immediately available for added traction in the event of surprise adverse conditions, just like a typical AWD. Added wear and tear and/or the chance of 'damage' from 4H Auto over 2H seems like it would be extremely minimal, even over the course of hundreds of thousands of miles.

 

[alphawolff]

Correct on paper 4H Auto is supposed to be running in 2H, unless 4H is needed. It may be redundant to throw it up in 2H, but I just do it on highway drives to keep things simple, and to not use the front driveshaft and other components when I don't really need them. The theory in my head is: less moving parts means less wear and potential damage. 2H ensures those parts aren't moving, so consider it just peace of mind.

The 4h auto actually engages the front wheels a lot when accelerating from a stop. Nearly every red light really. Standard AWD operation essentially. The more throttle the more they are engaged. The transfer case in the 4h auto variants can do some serious torque distribution. Kicking in during slippage is just a bonus.

Wouldn't be surprised if running a 4XE in 4H auto results in a loss of 1-2 miles of range per charge.

 

[NJ_JL 2020]

Looking at some YouTube videos on the 4xe. Looks like 0-60 on 4H mode is ~5.2 seconds. Not bad!

 

[us3r1d]

Looking at some YouTube videos on the 4xe. Looks like 0-60 on 4H mode is ~5.2 seconds. Not bad!

Yeah, it's kinda silly how much acceleration these things have.

If I floor the pedal on my 2024 Rubicon, it accelerates so hard that the front end actually lifts enough to noticeably affect the steering. Do not do this on a curve.

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