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Hey guys,

In December I am parking and flying, car will be left alone for 4 weeks. Anything I should do? I keep reading horror stories of these being left and coming back to them dead...

Thanks in advance
 

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Since we don't have departure time feature.....we have to find some other way to force the vehicle to top off the LVB.

If it were me, I would turn off the radio and climate control heated seats and wheel.
Then park and lock it up.
Once a week, remote start via the app. Remote stop after 4-5 minutes.

This will force the DC/DC converter to wake up and will close the contactors to the HVB so it will charge the LVB.
 

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I’ve been wondering about this as well. I thought I read that the lithium battery will seek to warm or cool itself depending on ambient temp. So, if the vehicle is going to parked in cold winter temperatures for a lengthy period, would it make sense to leave it plugged in to the charger?
 

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I’ve been wondering about this as well. I thought I read that the lithium battery will seek to warm or cool itself depending on ambient temp. So, if the vehicle is going to parked in cold winter temperatures for a lengthy period, would it make sense to leave it plugged in to the charger?
This is what I was referring to…
BATTERY CONDITIONING
In extreme temperatures, high or low, the high voltage battery may need to be conditioned, and therefore may require the vehicle to be plugged in.
If the ambient temperature is 5°F (-15°C) or below at vehicle shut down, the instrument cluster will display the message “Plug In Vehicle To Condition Battery”.
If the battery temperature is below -22°F (-30°C), or 131°F (55°C) or above, the vehicle will NOT start:
 If the vehicle is plugged in at these battery temperatures, the instrument cluster will display the message “Please Leave Key In RUN — Battery Conditioning Needed”.
 If the vehicle is not plugged in at these battery temperatures, the “Plug In Vehicle To Condition Battery” will be shown in the instru- ment cluster display.
NOTE:
 When the “Please Leave Key In RUN — Battery Conditioning Needed” message is displayed, keep the ignition in the RUN posi- tion for the battery to recover. Place the igni-
tion back in the OFF position when the message disappears, and then start the vehicle. When this message is displayed, do not operate any air conditioning controls.
 Under these high or low temperatures, while the vehicle is plugged in and the ignition is in the OFF position, the vehicle may “wake up” to precondi- tion the high voltage battery for use.
 It is recommended that the vehicle be plugged in overnight when possible to maxi- mize the electric range of the vehicle.
 It is recommended that the High Voltage battery not be exposed to direct sunlight in high temperature environments while the vehicle is OFF. This may lower the life of the battery.
The messages will only be displayed when the ignition is in the RUN position and the high voltage battery is not ready to provide propulsion power. The messages will also display if there was a failed attempt to achieve READY state when the high voltage battery cell temperatures w
 

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Hey guys,

In December I am parking and flying, car will be left alone for 4 weeks. Anything I should do? I keep reading horror stories of these being left and coming back to them dead...

Thanks in advance
How far is the airport from home? Would it be feasible for you to just hail an Uber or Lyft to the airport and leave your 4xe at home?
 

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Understood. I was noting this so people didn’t think there was something different about owning a hybrid (except for extreme temps). If you leave any car for a month, the battery may die.
Generally this would be true. However, keep in mind the LVB in a PHEV is more like the LVB found in a BEV which is to say they generally are lighter duty batteries since all they really need to do is start the computers and then power the various 12v devices (windows, fans, pumps, radio etc). Then factor into the equation that many EVs have bidirectional data transfers around the clock then it is easy to create a scenario where the LVB can be depleted quicker than a traditional ICE or even a mild hybrid.

All that being said......the 4xe is different than almost all other PHEVs in that Jeep provided a LVB that is nearly twice as strong as industry standard so your comments seem valid.
 

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I think it would be useful for you to have the car plugged in somehow if possible but if you leave with 100% battery and run remote start to keep the LVB topped off every few days that might work. You may want to test this, but maybe the software has been updated to make this unnecessary.

I’ve left a 4xe parked in my garage plugged in and won’t be back for 50-60 days. I had SOC below 70% when I left and planned to have it charge 15 minutes per day using the scheduler. However, I thought setting the start time and end time the same would cancel the charging. Instead it just charged to full which I wanted to avoid.

So now I’m planning to remote start for a little bit everyday until I drain it to 50% and change my scheduled time once a day to avoid the charger turning on. Jeep really needs to upgrade their software to allow setting a maximum charge level.

With that said, I have left a Fiat 500e sitting around unplugged for 3-4 months at a time between charges and the 12 V battery in it has not died. So it seems like the Jeep is probably programmed to maintain the charge level of the 12 V battery even when it is off otherwise they will start running into the 12 V failures mid-drive that have plagued Porsche and many others.



Hey guys,

In December I am parking and flying, car will be left alone for 4 weeks. Anything I should do? I keep reading horror stories of these being left and coming back to them dead...

Thanks in advance
 

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It seems to me that the key issue is whether storage is expected to be at an ambient temp that is low, below 5 degrees. If that is the case, then the manual recommends leaving it plugged in.
 

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Or said another way, the same thing that happens to any car is what's gonna happen.
I feel like nothing will happen if you leave it for a month. I also had a Mitsubishi Outlander PHEV that we eventually drove very seldomly and the 12V battery never died even though the HV battery would discharge completely. You'd think all these engineers could figure this one out.
 

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I have 2 experiences to share. The first battery issue I had was after a concert. I got in line to leave the garage and sat in park with the A/C running and battery at 38%. After 40 minutes, I went to finally exit and the jeep wouldn't move. None of the modes worked even electric. Had to get it jump started. 2nd experience is parking at the airport from a Thursday to a Monday with 56% left upon parking. The jeep allowed me to leave in electric mode as usual but displayed that the auxillary switches were disabled due to low battery. Gauge said battery was 12.6 volts. Auxillaries would not work until the battery gauge reached 13.5. I am sure if it was left unplugged for a few weeks, it would need jumped. I have not got it to the dealer yet to be checked. Now my heated seats and wheel buttons do not work! I can turn them on within the touch screen though.I really need to get it to service to see what the he__ is up.
 
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