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Hello All! I tried searching on here, but didn't find a similar thread, but I'm hoping I'm just being paranoid... I've got my van (which I love) and recently got the L2 charger installed. I have received a recall notice, but no notice of the part arriving, so I'm just keeping it and driving it until something happens/the part comes in.

Last week, and now today, I've gotten home, turned everything off and it goes silent. I plug in, and then a half hour later, I can hear a fan running - loud enough that it had me thinking the car had turned on... I double checked the dashboard and the ignition is still saying off, but the fan is running.

Does anyone know why that would happen? My only guess so far is that the L2 charges so much faster that it gets hot while charging and the fan turns on to keep it cool? Since it's only a guess, I figured I would turn here to the experts! Any information appreciated:)
 

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I think the battery uses the cooling system to cool. So by running the fans it can use the radiator to cool the batteries. On one of the reviews for a juicebox pro that his volt would do that when he charged at max amps so her turned it down a little and it wouldn't kick them on anymore. Maybe the same thing? Keeping the batteries cooked off.
 

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Discussion Starter #5
Phew! Thanks everyone! I was pretty sure that was it, but since I'm still awaiting the recall fix, everything has me a bit worried, because I don't want to be without it:)
 

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Hello All! I tried searching on here, but didn't find a similar thread, but I'm hoping I'm just being paranoid... I've got my van (which I love) and recently got the L2 charger installed. I have received a recall notice, but no notice of the part arriving, so I'm just keeping it and driving it until something happens/the part comes in.

Last week, and now today, I've gotten home, turned everything off and it goes silent. I plug in, and then a half hour later, I can hear a fan running - loud enough that it had me thinking the car had turned on... I double checked the dashboard and the ignition is still saying off, but the fan is running.

Does anyone know why that would happen? My only guess so far is that the L2 charges so much faster that it gets hot while charging and the fan turns on to keep it cool? Since it's only a guess, I figured I would turn here to the experts! Any information appreciated:)
The 2018 owners manuals just went up. I noticed while browsing the Quick Reference Guide that is says this:

This vehicle is equipped with an electric cooling fan
mounted behind the radiator that starts automatically,
and may start at any time. Your vehicle may determine
the fan needs to start and to run if engine coolant is too
hot, if the ambient air temperature is too high, or if the
vehicle is charging and the hood is open. Even after
the vehicle is turned off, the fan may start without
warning and run for several minutes. Be aware of this if
you are working in the engine compartment. Always
keep fingers and tools away from the fan blades.​
 

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yes my car (non-hybrid) does that as well the fan is automatic, if I have run it hard and the day is exceptionally hot the fan will run as we walk away from it. it is just self preservation feature to prevent warping of heads, melting of plastics, fires when there is not air circulation to drive excess heat away from the engine bay. So I would imagine the same heat/damage prevention application happens in these Hybrids as the batteries get seriously hot has they charge with so much juice poring into them, and lithium isn't the most stable substance at high temps and the batteries will prematurely fail with high heat hanging around, and the batteries don't charge as well when they get superhot.
 

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Hi, new to forum and have not thoroughly researched this BUT ...

Just got home from a long trip on the coldest day of the season so far.

ICE hot and battery at 0% for most of trip.

After plugging in, a whirring fan noise is noticeable. It is NOT the same as the fan that kicks in when the hood is opened. Never noticed this before. Remains on when vehicle is turned on/off. Turns OFF when L2 charger is unplugged. Turns back ON when L2 charger is plugged in again. I get that the battery may need cooling when charging but why today and never any other day when it has been much warmer???
 

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It may not be cooling - it may be warming.
 

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Hi, new to forum and have not thoroughly researched this BUT ...

Just got home from a long trip on the coldest day of the season so far.

ICE hot and battery at 0% for most of trip.

After plugging in, a whirring fan noise is noticeable. It is NOT the same as the fan that kicks in when the hood is opened. Never noticed this before. Remains on when vehicle is turned on/off. Turns OFF when L2 charger is unplugged. Turns back ON when L2 charger is plugged in again. I get that the battery may need cooling when charging but why today and never any other day when it has been much warmer???
Hi SherlockHolmes,

If you decide to visit a certified dealership for further diagnosis I'd be happy to offer assistance if needed. Just send us a PM with your VIN and let me know!

Andrea
Chrysler Social Care Specialist
 

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I am experiencing the same issue on my 2018 limited ever since manufacturer recalls were applied. I went into the garage and measured the sound level while it was happening and was shocked to find it at a constant 85 db. This is entirely unacceptable - it's like having a shop vac running in my attached garage (kids' room right above) randomly and at all hours of the night.

This is my third electified vehicle and neither of my other two cars ever ran the fan in this manner. I have to assume that there is a major engineering fault here as the recall applied dealt with the runaway cruise control issue recently discovered. Why else would Chrysler secretly adjust fan operation settings to run so aggressively?

I took temperature readings while I was in there: ceiling temp (9') was at 89.8 degrees F, floor temp at 82.9 degrees F, hood temp was at 97.6 degrees F.


What gives??
 

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I have a 2017 eHybrid, and my experience is the same that the very loud fan noise coming from the ICE area under the hood began after I had the cruise control recall fixed. There had previously been a very soft fan-like noise coming from the driver's side rear wheel well, and while that sound is still emitted periodically, the ICE area noise dwarfs it and scares anyone near the vehicle when it kicks on. I have not noticed any correlation with garage temperature.

It is very strange for Chrysler to not proactively let us customers know this change would be included in that update.
 

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I have a 2017 eHybrid, and my experience is the same that the very loud fan noise coming from the ICE area under the hood began after I had the cruise control recall fixed. There had previously been a very soft fan-like noise coming from the driver's side rear wheel well, and while that sound is still emitted periodically, the ICE area noise dwarfs it and scares anyone near the vehicle when it kicks on. I have not noticed any correlation with garage temperature.

It is very strange for Chrysler to not proactively let us customers know this change would be included in that update.
That recall was recalled for errors in the software and the excessive fan activation I would bet is one of those errors.

There is a stop delivery placed on all vehicles that have had the u73 recall done.

https://www.pacificaforums.com/forum/433-2017-chrysler-pacifica-phev-hybrid-general-discussion/39764-u73-cruise-control-update-hybrids-might-cause-catalytic-converter-problems.html
 

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I have a 2017 eHybrid, and my experience is the same that the very loud fan noise coming from the ICE area under the hood began after I had the cruise control recall fixed. There had previously been a very soft fan-like noise coming from the driver's side rear wheel well, and while that sound is still emitted periodically, the ICE area noise dwarfs it and scares anyone near the vehicle when it kicks on. I have not noticed any correlation with garage temperature.

It is very strange for Chrysler to not proactively let us customers know this change would be included in that update.
Hi soylentwhite,
We are glad you reached out to us with this. We would like to hear more about the concerns you are experiencing. Please send us private message with your VIN, current mileage, and more information. We hope to hear from you soon.
Julie
Chrysler Social Care Specialist
 

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I’m having this same problem since having the recall software update performed.

I live in the nice and cool Pacific Northwest, and it does this even if it’s cool outside. It sounds like a jet engine taking off. If I had a charging schedule setup to charge overnight, it would wake up the whole neighborhood.
 

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I’m having this same problem since having the recall software update performed.

I live in the nice and cool Pacific Northwest, and it does this even if it’s cool outside. It sounds like a jet engine taking off. If I had a charging schedule setup to charge overnight, it would wake up the whole neighborhood.
Does it also make this noise when the car has had a chance to cool off, say after an hour or longer?
 

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I have a 2017 eHybrid, and my experience is the same that the very loud fan noise coming from the ICE area under the hood began after I had the cruise control recall fixed. There had previously been a very soft fan-like noise coming from the driver's side rear wheel well, and while that sound is still emitted periodically, the ICE area noise dwarfs it and scares anyone near the vehicle when it kicks on. I have not noticed any correlation with garage temperature.

It is very strange for Chrysler to not proactively let us customers know this change would be included in that update.
Hi @soylentwhite, did you hear anything from Chrysler on this? Really not looking forward to my recall fix if a howling fan is going to be the side effect.
 

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Hi @soylentwhite, did you hear anything from Chrysler on this? Really not looking forward to my recall fix if a howling fan is going to be the side effect.

Hello pachyderm,
Please know we would be more than happy to offer our support while you are working with your dealer to get this recall completed. If you need any additional assistance after please update us that on well. If this is something that interest you, feel free to send us a private message.
Julie
Chrysler Social Care Specialist
 
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