Prius Plug-in 2012-15 :: Loud Humming Noise From Right Rear Wheel Well Area After Charge Complete
Jun 2, 2014
Happened to go down to garage to get something from pip about 3 hours after charge was complete and noticed loud hum coming from right rear wheel well area.
We had not had any lightning storms, electrical interruptions or anything odd; house is on whole house surge protection, and 240v evse has been working fine.
Hum disappeared when car was booted up in ev for a moment and then turned off. Hasn't come back on in an hour.
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On my last few charge cycles, the PiP's battery has not been charging completely. Even when I get the "charge complete" message, the top part of the battery indicator remains unfilled and I'm only getting 14.1 estimated range.
For comparison, last month I used to get 15.2 to 15.6 of estimated EV, when the battery icon filled completely after each charge. I always use the charge timer to set charging to finish 10-20 minutes before I need to drive the car.
My M-F routine:
- car finishes charging at 8:30 (13.8-14.1 estimated EV)
- I drive 8 miles to work at 8:20-8:30 (5-7 estimated EV remain, depending on traffic)
- I set charge timer to finish at 6:30 (13.8-14.1 estimated EV)
- I drive 8 miles to home at 6:30-6:45 (5-7 estimated EV remain, depending on traffic)
My weekend routine is obviously different, more driving, more charing, and not using the charge timer. Could it be because i'm not using all the EV so the battery is being lazy and not feeling like charging more than I need? Are there any known side effects of mixing 110V and 220V charging?
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2012 SE 4 cylinder. Noticed the other day a humming noise from under the rear trunk area, maybe an evap test, seemed to be running for several minutes, I did key on/off and it shut off. How often does this run, is it a battery drainer?
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After my 25k service it seems the timer scheduler when the square button is pressed/held flashes at 7am. When i press the H button the hour advances to 12am then closes. I want to start the charge at 12am and finish at 5AM. The timer windows closes when i move the finish hour to 12am and then my regular clock hour changes. It used to be when i pressed/held the timer button the start time would show at 12 am and after setting it would go to the finish hour.
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I am in the process of tracking down a very intermittent "tick" sound coming from the rear driver side door area. How to remove the door panel.
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I got home yesterday around 5 pm, and after 5 1/2 hours, noticed a buzzing noise from the battery area. It was 50 degrees out, so I don't think it needed cooling? Anyway, I plugged it in for a minute and the sound changed, then unplugged and after a few minutes the sound shut off. Never experienced this before, so long after shutting down. No sound this morning and charging now, no problem so far.
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Does the A/C and heater run only with Ice? Or is it able to run on EV alone?
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Why won't the iPad charge when plugged into the USB port in the center console ? My iPhone charges and auto plays but the iPad will only auto play.
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If the following variables are true:
-Extremely cold day out (highs in the single digits)
-Will be hauling around people that like a very warm car
-Will be in a lot of stops and go traffic
Is the best practice to charge only to about 2/3 or 3/4 of the way full (according to the battery graphic on the HSI)? My thinking is the ICE will be running a lot while stopped at stop lights and waiting in traffic. And I might as well have somewhere for all that extra energy to go. I know we are kind of splitting hairs here, but I wanted to think about this situation before it actually came up.
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Really starting to get a little frustrated and would love input.....
Owned our PIP for almost a month now. First week, fully charged EV miles were showing around 13.7. 2nd Week, around 12.2, 3rd week, 10.5 and now this week it's gone from 9.6 to 9.1???
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I just purchased a '12 PIP advanced a couple days ago. Love it so far, but I'm confused about why it keeps on switching out of EV mode before the charge is used up. My commute is 6 miles, so I assumed that I would be able to get to my office with no problem, using only electric. Without accelerating quickly or going above 62 mph, the car still switches into hybrid mode numerous times, for no apparent reason, resulting in an average of about 90 mpg by the time I get to work, still with a lot of juice left in the battery.
Why this is happening? My dreams of going for months without filling up with gas are starting to fade away.
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I know I am unusual but most days I drive about 3-4 miles. I can get 2-3 days out of a charge. Should I plug in every night or just when needed? Does it use more kWh to plug in every day?
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I have noticed this, and thought it strange. I don’t see the charging arrows in the display.
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Edit (3/2/13): Problem identified. The timer was incorrectly and inadvertently set, so charging wouldn't start. See this post below.
Three times in the past two weeks, my PiP has refused to take a charge. It happened twice on Chargepoint chargers. The second time, I plugged in and the charger displayed "Vehicle refused charge" or something similar. Tried 10 times with the same result. Then it charged fine at home, and on 240v the next day.
This morning, it won't charge at home on 110. Plug in, the brick clicks, it draws about 200 ma for a couple of seconds, and then zero. Totally repeatable.
No fault codes on Torque. The dealer had it earlier this week and couldn't make it happen or see any fault codes either. The first time it happened the charging cable was off the ground, so I suspected a bent pin, but they all look fine.
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I had been running on EV then parked in the cold to wait for the wife. Turning on the heater started the ICE (of course). It charged the battery about 0.6% then stopped charging, ICE still running. So I switched to HV and it restarted charging about 0.3% and then stopped charging. So I switched back to EV for a few seconds than back to HV and the charging resumed another 0.3%. Once the coolant temperature reaches 130 degrees the ICE stops. Nice heat until the coolant gets down to 118 degrees and the ICE starts again. Back in EV and the battery is charging and the HV/EV switching continues to add more charge. Until time to leave I picked up about 5% SOC, kept warm. Not good for mpg but 5% SOC is nice.
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Experienced this (Loud engine knock or rattle noise) regarding the service bulletin (T-SB-0010-12)? If so, did you take your vehicle in for service?
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Got home from work the other day, shut down my 2012 Prius 4 and went into the house. A couple of hours later went into the garage to drop a trash bag and heard a humming/whirling sound from the garage. Walked around the Prius and isolated it coming from the bottom rear of the car. Went and got key, turned the car on, then off again and the noise ceased. What that was? Fuel pump maybe? And why did this occur?
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I live in NJ and in summer I am getting a full charge of 8.1 miles. In winter i used to get almost 11 miles. I thought in summer the charge will be even more?.
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I received a message similar to this when I started my car up this morning. I am paraphrasing because I don't remember the exact wording. I had set the timer to charge from 4am-7am and entered my car at 7am to this message and 0 charge. Did I just plug it in correctly or what does this mean? I've never had an issue until today.
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I don't plug my PiP in often due to the cost of electricity here, but what I have noticed that when it has a full charge, around 13Miles, it will quickly drop down to 7-8, even when not using EV. Meaning, I start up car, turn off EV and the motor gets warm. Engine shuts off and I drive normally using the ICE. Over the course of a few miles, I'd say about 10, that EV range slowly drops down to 7-8 and then maintains itself around there. Pretty much the whole time I would have been using the ICE to maintain ~70MPH on the highway, not climbing, just flat.
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As I accelerate, there is a humming noise that comes from the transmission area of the car. It does not make the noise when I am in idle, nor if i put the transmission in neutral and rev the engine.
When driving slow the noise is very subtle. As I accelerate faster the noise gets louder. The noise becomes the loudest at 60 mph. Above 60 it seems to calm down some. The noise is like a constant, deep humming sound. The noise gets softer as I slow down and then is gone when at idle again. To me it seems related to the speed of the tire or the CV half shafts turning or something rubbing in the transmission as the car goes faster. However the sound doesn't change when the transmission shifts. It stays constant and only gets louder as I go faster and then softer as I slow down.
While driving and turning hard to the left the sounds almost disappears until the car straightens out again. I have replaced the struts on all four wheels and this seems to only have caused the sound to get louder. I have also inspected the CV joints. There doesn't seem to be any cracks or signs of wear to all 4 joints. And I repacked the bearings.
The only other things I can think of is the cv half shafts are actually bad and need to be replaced. Or the motor mounts are not aligned/worn out and need to be replaced. Or the kickdown band and low reverse band on the transmission need to be readjusted. Or the transmission is has a problem (however it doesn't slip when driving).
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