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Mechanical Maintenance (Oil, Fluids, Break-In, Servicing) Everything related to the mechanical maintenance of the FR-S and BRZ


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Old 03-14-2017, 06:26 PM   #29
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There will be times when I go out to the garage and I hear something electrical going on in the car, even though I hadn't driven it for several hours. It sounds like a humming. The sound seems to be in the rear, near the fuel tank. If I start the car up, and shut it off right away, the sound stops.


Any ideas on what that could be?
Go read your manual.

Kind of disappointed that after 3 years on the forums you don't know the answer to this question.
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Old 03-14-2017, 06:39 PM   #30
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Go read your manual.

Kind of disappointed that after 3 years on the forums you don't know the answer to this question.
You know, I just asked because it popped into my head and I thought it might be relevant to the discussion.

I'm not asking you for any favors. Thanks though.
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Old 03-14-2017, 06:41 PM   #31
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Yep! I forget the amperage, I'll have to test it again, and one day I'll just pull the power window fuses and let it sit for 3 days off charge. If it starts then my theory is confirmed.
I would love to get to the bottom of this parasitic drain thing.
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Old 03-14-2017, 06:44 PM   #32
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There will be times when I go out to the garage and I hear something electrical going on in the car, even though I hadn't driven it for several hours. It sounds like a humming. The sound seems to be in the rear, near the fuel tank. If I start the car up, and shut it off right away, the sound stops.


Any ideas on what that could be?
Fuel pump/evap system leak test.
http://www.ft86club.com/forums/showthread.php?t=16534
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Old 03-14-2017, 06:48 PM   #33
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I would love to get to the bottom of this parasitic drain thing.
Me too just for sanity! Worse feeling when you go out to your brand new car and not even a click.
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Old 03-14-2017, 06:54 PM   #34
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Me too just for sanity! Worse feeling when you go out to your brand new car and not even a click.
But see mine has never even hesitated. Left it for two weeks last winter, came home, jumped in turned key, started right up first crank. That is what baffles me that some have so many issues and others not a problem.
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Old 03-14-2017, 07:00 PM   #35
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You know, I just asked because it popped into my head and I thought it might be relevant to the discussion.

I'm not asking you for any favors. Thanks though.

Understand the question, but the answer you were looking for didn't fit in to the discussion of weird battery drains.

If it was a major source of drain on the battery, you'd 1) see more cases of dead batteries on this car, and 2) it'd be more of an issue across different types of cars utilizing a similar direct injection or modern evap system on vehicles.

This is actually commonly found on many, MANY cars, not just our own. It is not a source of battery drain.

https://www.google.com/webhp?sourcei...+leakage+check

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Old 03-14-2017, 07:10 PM   #36
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But see mine has never even hesitated. Left it for two weeks last winter, came home, jumped in turned key, started right up first crank. That is what baffles me that some have so many issues and others not a problem.
Yeh interesting, looking forward to a TSB on this, maybe never to 5 years...lol
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Old 03-14-2017, 08:13 PM   #37
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If it was a major source of drain on the battery, you'd 1) see more cases of dead batteries on this car, and 2) it'd be more of an issue across different types of cars utilizing a similar direct injection or modern evap system on vehicles.

This is actually commonly found on many, MANY cars, not just our own. It is not a source of battery drain.

https://www.google.com/webhp?sourcei...+leakage+check

-alex


I think it's pretty obvious that I don't research dying batteries or evap systems in direct injection cars during my spare time.
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Old 03-14-2017, 11:37 PM   #38
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I think it's pretty obvious that I don't research dying batteries or evap systems in direct injection cars during my spare time.
Oh, it's perfectly germane to everyone who also didn't know until you thought to ask.

Give no fucks.
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Old 03-15-2017, 12:33 AM   #39
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I tested for a parasitic draw and the power windows drew the current Seems odd why. Anyone have a guess?, had my new Odyssey battery go after 3 days of no start. So 2 or more days I will put on a 2 amp charge .
If that draw is real, I'd guess that one of the window motors is not shutting all the way down when the switch is OFF.


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Old 03-15-2017, 12:35 AM   #40
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Yeah, I didn't drive mine for 10 days, and the battery went dead. After 8 days of not driving it, it took longer to start. So I got a NoCo charger and will charge it once a week or so.
I would suspect your battery is on it's last cell ...... I'd replace it.




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Old 03-15-2017, 12:39 AM   #41
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Go read your manual.

Kind of disappointed that after 3 years on the forums you don't know the answer to this question.
......oh, be nice ....... maybe @funwheeldrive just had a brain fart ......


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Old 03-15-2017, 12:46 AM   #42
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But see mine has never even hesitated. Left it for two weeks last winter, came home, jumped in turned key, started right up first crank. That is what baffles me that some have so many issues and others not a problem.
Likewise. My 2013 FR-S (4 year old OEM battery) will go a week at a time during the winter, when I don't drive it as much, and then I may drive it only 20 miles, and it will start up with no problem.


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