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So, I have about 1000 miles on my Sahara 4xe. I had a 240 amp level 2 charger and Juice box installed in my garage. Seems to work perfectly. My concern is that I’ve had several occurrences of the Jeep‘s fan turning on and running at high speed for about 5 seconds while the charge from 0% is happening. I called Wave and they claim they haven’t heard of this. Anyone else have this happen or have a guess about what’s going on? Seems to do this about 30 minutes after being plugged in.
 

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So, I have about 1000 miles on my Sahara 4xe. I had a 240 amp level 2 charger and Juice box installed in my garage. Seems to work perfectly. My concern is that I’ve had several occurrences of the Jeep‘s fan turning on and running at high speed for about 5 seconds while the charge from 0% is happening. I called Wave and they claim they haven’t heard of this. Anyone else have this happen or have a guess about what’s going on? Seems to do this about 30 minutes after being plugged in.

This is normal. The Jeep is "conditioning" its battery, which basically means its keeping the battery within a certain temperature range. This will add to the longevity of the battery. Our Jeep is doing this, as did my Chevy Volt that I owned before this vehicle.
 

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Discussion Starter · #5 ·
This is normal. The Jeep is "conditioning" its battery, which basically means its keeping the battery within a certain temperature range. This will add to the longevity of the battery. Our Jeep is doing this, as did my Chevy Volt that I owned before this vehicle.
Thanks, I feel much better.
 

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As stated above, the battery needs to stay cool in the summer and warm in the winter. So while charging in warm weather the air conditioner turns on, powered by an electric motor, not the engine, to keep the battery cool. In very cold temperatures the heater will turn on to warm up the battery. You should not hear the heater, as it is electrical heat.
 

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So, I have about 1000 miles on my Sahara 4xe. I had a 240 amp level 2 charger and Juice box installed in my garage. Seems to work perfectly. My concern is that I’ve had several occurrences of the Jeep‘s fan turning on and running at high speed for about 5 seconds while the charge from 0% is happening. I called Wave and they claim they haven’t heard of this. Anyone else have this happen or have a guess about what’s going on? Seems to do this about 30 minutes after being plugged in.
Yeah, mine does this. The first time it happened I worried I had triggered self destruct mode. If this happens in the middle of the night, I feel pretty confident the neighbors will call the police, so while it is normal, it is very, very disconcerting with how it spins up like a civil defense siren.
 

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Yeah, mine does this. The first time it happened I worried I had triggered self destruct mode. If this happens in the middle of the night, I feel pretty confident the neighbors will call the police, so while it is normal, it is very, very disconcerting with how it spins up like a civil defense siren.
I think this is what I'm experiencing as well. Can you describe what you're hearing? Ours sounds like someone is revving the engine, and it's really loud. If it is the fan, it's a very loud fan.
 

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This is normal. The Jeep is "conditioning" its battery, which basically means its keeping the battery within a certain temperature range. This will add to the longevity of the battery. Our Jeep is doing this, as did my Chevy Volt that I owned before this vehicle.
Can you clarify the sound you're hearing when this happens? Mine sounds very loud, like someone is revving the engine. Is this the fan your referring to?
 

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I’m so glad someone mentioned this. I thought I might have a defect in my vehicle. The first time this happened to my 4xe in the garage I thought it might blow up! It’s happened a few times at startup too. That fan really cranks. Jeep should notify owners of this.
 
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