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Discussion Starter #1
I just got a new 2016 Rav4 Hybrid. One thing I noticed is that when I get in after a while the traction battery is dead and it was charged when I left it. It seems to drain completely after an hour. Is this normal or do I need to take it in to have the battery replaced? It seems odd that the charged battery would drain on its own like that. The car doesn't even have 100 miles on it yet.


Thanks,

Greg
 

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You need to spend a great deal more than 100 miles getting to know the hybrid system.
For openers, its never "dead". Its not unusual for it to lose a bar or two after sitting. But you need to be aware that a bar does not represent a fixed amount of charge, but rather a range. With 2 red bars showing, your battery has a SOC of about 40%. With 8 bars showing its about a 80% SOC. So you're actually only operating in that 40% range of usage from 40-80%. Unless you're actually leaving the system on, there's nothing capable of draining energy from the battery.
 

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I have to see what it shows in the morning. If it shows 0 bars, I would assume there is a problem then, but if it shows 2 it should be ok? I thought the battery should stay charged longer. The car had either 6 or 8 bars when I turned it off and when I got back after about an hour it was down to 2. It just seemed odd to me to loose a charge that quick.
 

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I would call that strange personally. I've never paid much attention but even after a few days I can still get in and it's somewhere near where I shut it off. ie. If I park and there's 7 bars, after a few days it will likely be at 6-7 bars.

Very stupid question, and no offence intended, are you sure you are pushing the start/stop button to power down the car when you leave?
 

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This is a fairly common report from first time hybrid owners. Stop looking for problems and assuming the worst. The SOC (battery) indicator is supposed to go up and down. Read the manual some more and drive the car. Learn how it works.
 

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If the battery is used in the 40-80% of the full capacity, and 0 bars means 40% and 10 bars means 80%, then....

Ni-Cd typically lose 10% per month, or 0.33% per day. Each bar represents 4% of the full capacity. So if nothing is draining the battery while sitting it should go down 1 bar every 12 days. :D
 

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This is a fairly common report from first time hybrid owners. Stop looking for problems and assuming the worst. The SOC (battery) indicator is supposed to go up and down. Read the manual some more and drive the car. Learn how it works.
Disagree with you on this one. He is asking us because we have more experience with the car. I would certainly say that, assuming what he is saying is accurate, what he is experiencing is strange and abnormal behavior.

If the car is being parked and shut off with a full traction battery and then an hour later start it up and the battery is down to 2 bars(or even less if he is saying it's "dead") then that is clearly a problem in my opinion. Of course the traction battery swings from full to empty and everywhere in between during driving depending on the driving conditions, but that is not what the OP is talking about. A full traction battery should not fully discharge itself in an hour while the car is shut off. Now if the OP had inadvertently left the car "on" for that hour, that's a different story.
 

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Discussion Starter #8
I must have been mistaken in what I saw, or maybe it did happen, I don't know for sure. Anyway, this morning after several hours of it being off it showed actually more then when I left it. It was at 4 bars, and when I started it this morning it showed 6. I will keep an eye on it for any strange behavior. Otherwise it seems to be doing fine. I still have to learn how to maximize the fuel efficiency while driving :)
Thanks for the replies.
 

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I must have been mistaken in what I saw, or maybe it did happen, I don't know for sure. Anyway, this morning after several hours of it being off it showed actually more then when I left it. It was at 4 bars, and when I started it this morning it showed 6. I will keep an eye on it for any strange behavior. Otherwise it seems to be doing fine. I still have to learn how to maximize the fuel efficiency while driving :)
Thanks for the replies.
6 bars is the most common indication. 8 bars is the maximum and is only seen rarely. Like I said, its supposed to go up and down. Each bar represents roughly 6-7% of the total battery capacity (60% of which is never used.)

Bottom line is that ANY issue with the traction battery will always be indicated by lights going off, beepers sounding and a half dozen error codes. IOW if you have to ask, there's nothing wrong with it.
 

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I actually get 9 bars from time to time, and 8 quite often. Another thing I noticed is that on a recent long hiway journey that it stays at 6 bars. Most of the journey was at 115 km/hr for 8 hours and it maintained 6 bars on the hiway but charged up to 8 once in city.
 

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The only time I've seen 9 bars is on a 3½ mile downhill grade with no throttle use, just braking for the switchbacks, has done it every time I made that run.
 

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EV mode is good for one measly mile, correct?

The other features that make the hybrid more fuel efficient is the Atkinson engine and the electric motor that works to propel the car forward from a standstill or when travelling at lower speed?
 

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EV mode is good for one measly mile, correct?

The other features that make the hybrid more fuel efficient is the Atkinson engine and the electric motor that works to propel the car forward from a standstill or when travelling at lower speed?
While technically true, it's good for one mile, that is assuming you've done no coasting or braking during that time which regenerates the battery. It's pretty easy to run on battery only up to about 65 km/hr. After that it gets harder to modulate well enough to keep the engine off. So it's good for more than just parking lot speeds. Most city driving can be accomplished with the battery.
 

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Not unless you don't mind the line of honking cars behind you!
I mean once the desired speed is met. Yes, accelerating without using the ICE would cause lots of honking. lol But once at speeds of 65km/hr or less you can use battery only.
 

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I get that question often, "how long can it run on its batteries?", from people with regular cars. My usual answer is that it can't and explains that it has a "synergy" system that reuses some momentum to go up to 20% further on the petrol I put in.
 

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EV mode is good for one measly mile, correct?

The other features that make the hybrid more fuel efficient is the Atkinson engine and the electric motor that works to propel the car forward from a standstill or when travelling at lower speed?
I live at the back end of a county park. The drive through the park is fairly flat and straight (by western PA standards). I'm able to go the full length of the park ~ 2.5 miles and then some before the engine kicks in. I drive through the park late at night sometimes and set the cruise to ~28 mph. I have the Ecco app up and I never saw the motor come on.
 
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