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Discussion Starter #1
I'll try and keep this brief but give you all the info I have in hopes you can help.

Part 1 - Took a trip out of town last weekend (150 mi. each way) Engaged mountain mode for hill climbing (So Cal. Castaic and Grapevine for those geographically aware of the area) I've ALWAYS done this for the trip. This time, it "appeared" my ICE was always running after recharging car.

Part 2 - My wife's been out of town and until the above trip and subsequent commute to work (Only 5 miles R/T) this issue hasn't gone away and my guess-to-meter has dropped to around 28-32 miles. (I've chalked that up to the very short drive and colder weather - It's been raining in Southern California the last week) I finally got home last night and instead of just shutting the car off I parked it and plugged it in (sound still there of running engine??) then opened the hood and the ICE engaged THEN??

I Don't know what's making the sound that is like a smaller version of the ICE (you can hear it and feel it JUST like when the engine cycles on). I may be reading into the "data" but it also seems like it takes more energy on the meter driving normal. I'm a little OCD about keeping the bubble as close to center as possible and even on flat terrain it's anywhere from 25-40 on the yellow gauge that points to the engine under normal driving. If there's something in the manual that explains this I can't find it.

Any help is greatly appreciated before I take the plunge and go to the squealer:eek:
 

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"all the info" except the model year? You don't have that?
 

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When you open the hood with the car on, it does start the ICE - that's a feature to make sure the mechanic doesn't accidentally start messing with a running car when they thought it was off. Plus it lets you check the belts, listed for pinging in the lifters, etc.
 

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Maybe you were hearing the air conditioning running?
 

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Volts make lots of peculiar noises that are more noticeable when stopped. There's a pump for heater (when ice is off). Pump for battery coolant, pump for inverter coolant. A/C compressor, radiator fans, brake accumulator pump, etc. If you turn the heater fan off, things will probably be pretty quiet. Mountain mode will often run the ice continuously, even when stopped.
 

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If the ICE is truly running all the time you'd see it in the mileage stats. If it is always in charge sustainingmode, maybe you need to have teh sensor that senses hood closure checked. The ICE will run all the time if you don't close the hood all the way.
 

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Discussion Starter #10
>Steverino - 2015
>Neromanceres - Battery TMS??
**Update** It definitely is tied to climate control as I turned everything off completely and it immediately stopped. New question then would be WHY now?? It's NEVER been this noticeable or "loud". Again, not as loud or as much vibration that you feel thru the floorboard as the ICE but nonetheless much more noticeable.
I appreciate everyone's help.
 

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the loudest "always on" noise that I hear is the heater circulator pump, which only turns off when the cabin fan is off. Its the same pump part that is used for the battery coolant circulator, but that one is fairly isolated from the cabin, where the cabin coolant loop pump has good audible sound connection to the cabin.... try turning off the climate system fan and listed to hear if the sound goes away.
 
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