Trunk light killed battery? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

humfrz · 01-13-2017, 02:03 PM

Quote:

Originally Posted by guybo

Get the battery properly charged up (either with your own charger- 6A overnight or 20A for a few hours or at a garage for a few hours) and you'll minimize the permanent damage done to the battery for longer battery life.

If you try to drive it around to charge it up, you'll decrease battery life and most likely in a few weeks have battery issues again.

I heard you the first time ......

humfrz

Ultramaroon · 01-13-2017, 02:24 PM

Quote:

Originally Posted by humfrz

I heard you the first time ......

lol

guybo · 01-13-2017, 03:15 PM

Oops how did that happen

humfrz · 01-13-2017, 03:26 PM

Quote:

Originally Posted by guybo

Oops how did that happen

Yep, the short term memory is the first to go ........

humfrz

humfrz

humfrz

Dadhawk · 01-13-2017, 03:38 PM

The dome light in my FR-S killed (the original 4 year old) battery in less than 6 hours to the point the car wouldn't start. It charged back up, but I replaced it anyway because it was starting to drag so it was just a matter of time.

Some of it is going to depend on the age of the battery, the temperature, etc, but yes it is very possible a standard incandescent bulb would drain it that fast.

As to the questions about the car turning off the lights, the 86 does not do that. It does (after 20 minutes) turn off the headlights. There was a whole thread about that in 2012 because the sticker indicated "automatic headlights" and there was a lot of discussion about what that meant/why didn't we have them/class action suit to address the "missing" (but actually just misunderstood) function.

strat61caster · 01-13-2017, 04:15 PM

Quote:

Originally Posted by guybo

If you try to drive it around to charge it up, you'll decrease battery life and most likely in a few weeks have battery issues again.

Killed my battery by leaving a dome light on over a weekend, did a ~45 minute drive after jumping to put some juice in it. That was when the car was ~2 years old and it happened 2 years ago, OE battery still going strong after 4 years and going dead once after that (not dead dead, just not enough juice to jump the car, sat in a parking lot listening to the stereo).

It started struggling this December, topped it off with distilled water and it's back to fighting fit, just hit 4 years old this week.

I think leaving something on in the car isn't just 'one thing on' anymore, if there's a dome light or a stereo the cars running other auxiliary systems without you knowing, the juice gets sucked out pretty fast in the conquest for more creature comforts while maintaining a modest battery.

Tcoat · 01-13-2017, 04:23 PM

Quote:

Originally Posted by Dadhawk

The dome light in my FR-S killed (the original 4 year old) battery in less than 6 hours to the point the car wouldn't start. It charged back up, but I replaced it anyway because it was starting to drag so it was just a matter of time.

Some of it is going to depend on the age of the battery, the temperature, etc, but yes it is very possible a standard incandescent bulb would drain it that fast.

As to the questions about the car turning off the lights, the 86 does not do that. It does (after 20 minutes) turn off the headlights. There was a whole thread about that in 2012 because the sticker indicated "automatic headlights" and there was a lot of discussion about what that meant/why didn't we have them/class action suit to address the "missing" (but actually just misunderstood) function.

I always love when people think they can go after the companies for things like this. My father tried going after a dealer once because the tires on his truck were not what the brochure said they would be. He figured he was going toe get at least a free set of tires if not a free truck because it was "false advertising". He found out quickly that they have their asses covered for such things! A five second look at the fine print tells you that everything may not be as shown.

PLEASE REVIEW THESE IMPORTANT DISCLOSURES.
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(Toyota has similar language)

200hp/tonne · 01-13-2017, 04:32 PM

Not at all surprising, considering a 30Ah battery at 12V nominal only has a total capacity of 1.3 MJ, so even a small drain like 20 or so Watts total (~5 ECU, ~5 Security, ~10 bulb) would completely eat up that battery in 18 hours

That being said, when working on my FRS in my garage I have forgotten trunk or door open and drained it many times too

PSi · 01-13-2017, 04:34 PM

time to upgrade to LEDs

i left my dome light on by accident for 8 hours and my car started up fine without any hiccups

Leonardo · 01-13-2017, 04:38 PM

Quote:

Originally Posted by Ultramaroon

Common. I unplugged my trunk light soon after I bought the car.

Me too!

SLVRSRFR · 01-13-2017, 04:59 PM

Jeez. I just make sure my trunk is shut properly before I walk away...

strat61caster · 01-13-2017, 05:02 PM

Quote:

Originally Posted by SLVRSRFR

Jeez. I just make sure my trunk is shut properly before I walk away...

NO! It's Toyota's FAULT!

humfrz · 01-13-2017, 05:14 PM

Quote:

Originally Posted by SLVRSRFR

Jeez. I just make sure my trunk is shut properly before I walk away...

...... what the heck is wrong with you, SLVRSRFR ........ THAT is waaaaay too simple.

humfrz

Impureclient · 01-13-2017, 06:57 PM

Who has Tetsuya Tada's home phone number? I'm calling in to complain.

01-13-2017, 03:38 PM	#19
Dadhawk Senior Member Join Date: Feb 2012 Drives: '13 FR-S (#3 of 1st 86) Location: Powder Springs, GA Posts: 20,103 Thanks: 39,657 Thanked 25,434 Times in 11,599 Posts Mentioned: 187 Post(s) Tagged: 4 Thread(s)	The dome light in my FR-S killed (the original 4 year old) battery in less than 6 hours to the point the car wouldn't start. It charged back up, but I replaced it anyway because it was starting to drag so it was just a matter of time. Some of it is going to depend on the age of the battery, the temperature, etc, but yes it is very possible a standard incandescent bulb would drain it that fast. As to the questions about the car turning off the lights, the 86 does not do that. It does (after 20 minutes) turn off the headlights. There was a whole thread about that in 2012 because the sticker indicated "automatic headlights" and there was a lot of discussion about what that meant/why didn't we have them/class action suit to address the "missing" (but actually just misunderstood) function. __________________ Olivia 05/03/2012 - 01/06/2024. 231,146 glorious miles. Visit my Owner's Journal where I wax philosophic on all things FR-S Post your 86 or see others in front of a(n) (in)famous landmark. What fits in your 86? Show us the "Junk In Your Trunk".

01-13-2017, 04:32 PM	#22
200hp/tonne Senior Member Join Date: Apr 2013 Drives: Raven Fr-S Location: Santa Clara, CA Posts: 136 Thanks: 100 Thanked 84 Times in 37 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Not at all surprising, considering a 30Ah battery at 12V nominal only has a total capacity of 1.3 MJ, so even a small drain like 20 or so Watts total (~5 ECU, ~5 Security, ~10 bulb) would completely eat up that battery in 18 hours That being said, when working on my FRS in my garage I have forgotten trunk or door open and drained it many times too __________________ FR-S Mod target: 200 BHp / Tonne 4lb Li Battery, RPF1 17x9, 245 RE71R, RCE T2, OFH, OFT Stg 2, Berk Over+Front Pipe, , STI Eng/Trans Mts, PU Bushings, Forrester Liq-Liq oil cooler, Al Driveshaft, OSGiken Diff

01-13-2017, 04:59 PM	#25
SLVRSRFR Senior Member Join Date: Aug 2014 Drives: 2013 BRZ 6MT, 2007 WRX Wagon 5MT Location: Caledon, Ontario Posts: 1,332 Thanks: 582 Thanked 534 Times in 377 Posts Mentioned: 10 Post(s) Tagged: 2 Thread(s)	Jeez. I just make sure my trunk is shut properly before I walk away... __________________ @bpennerz

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01-13-2017, 03:15 PM	#17
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Oops how did that happen

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01-13-2017, 06:57 PM	#28
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