OFT - Left it plugged in (3wks) and now car wont start - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

JozhGoober · 12-04-2014, 03:57 PM

I don't think you want to do that, since the OFT wants to know when the ignition is off during a flash cycle. You'd dump the whole flash process.

Foobar · 12-04-2014, 04:33 PM

Quote:

Originally Posted by JozhGoober

I don't think you want to do that, since the OFT wants to know when the ignition is off during a flash cycle. You'd dump the whole flash process.

Yep, other OBD2 devices also need to be plugged in while you perform an off/on sequence. Suppose you could put in a triple switch or something, off, ignition, and battery, then you can choose which mode you want, but that's starting to get carried away. Maybe just Battery/Ignition to keep it simple.

troek · 12-04-2014, 08:57 PM

Quote:

Originally Posted by JozhGoober

I don't think you want to do that, since the OFT wants to know when the ignition is off during a flash cycle. You'd dump the whole flash process.

this ^^^

Andrew025 · 12-04-2014, 10:28 PM

I was planning on adding a switch to the extension for leaving it on all the time but just unplugging the extension and using the original OFT cable for flashing just to prevent any issues.

steve99 · 12-04-2014, 10:41 PM

Quote:

Originally Posted by Andrew025

I was planning on adding a switch to the extension for leaving it on all the time but just unplugging the extension and using the original OFT cable for flashing just to prevent any issues.

I flash with 1 meter extension in with oft and with tactrix that writes 7 times speed of oft no issues

Andrew025 · 12-04-2014, 10:47 PM

Quote:

Originally Posted by steve99

I flash with 1 meter extension in with oft and with tactrix that writes 7 times speed of oft no issues

I meant preventing any possible connection issues that would arise from having the switch soldered in.

ap5512 · 12-05-2014, 06:19 PM

Noob OFT question...does the OFT NEED to be plugged in all the time? More specifically, if i were to buy a OFT, connect it and flash it...does it need to stay connected/plugged in?

Soo noob, I know...

Shiv@Openflash · 12-05-2014, 06:58 PM

Quote:

Originally Posted by ap5512

Noob OFT question...does the OFT NEED to be plugged in all the time? More specifically, if i were to buy a OFT, connect it and flash it...does it need to stay connected/plugged in?

Soo noob, I know...

Nope. It only needs to be plugged in when flashing the ECU, datalogging or when using the realtime data displays/alerts.

Cheers,
shiv

BuBlake · 12-06-2014, 09:01 PM

I keep my car garaged as well. After the recent update I no longer leave it plugged in due to thinking it was causing battery drain. I noticed that it seems to not exit the real time data display mode automatically anymore. I thought it was great at first until I went to start my car after it sat for about 24-36hours. May or may not have been the OFT, but either way I no longer leave it plugged in. No battery problems since then and car has been parked for 3+ days.

Tenchi · 12-08-2014, 09:14 PM

Same thing happened to me. I Unplug it at night and it no longer happens. I freaked out when it first happened.

themajesticone · 12-08-2014, 10:46 PM

lollllllllllllllllllll

ssyed · 12-09-2014, 07:53 PM

UPDATE:
This week, I've had it unplugged and never had any issues with starting the car after parking for a few days.

Well, I am glad to know, I wasn't the only one with this issue. Simply because its reassuring that it couldn't have been anything other than OFT. Last week when my car wouldn't start, I am sure nothing else could have been consuming power other than the OFT. Anyway, just for precaution, I keep jumper cables in my car now.

connorlug · 12-11-2014, 01:17 PM

Somebody with an OFT just needs to check parasitic draw with it plugged in. Take your multimeter, put one end on the negative battery post and one on the negative battery terminal and lift the terminal off, keeping the 2 meter ends on their respective spots. Obviously make sure the car is locked and has been so for more than a few minutes. The draw should be less than 40-50mA.

s2d4 · 12-11-2014, 01:33 PM

Quote:

Originally Posted by connorlug

Somebody with an OFT just needs to check parasitic draw with it plugged in. Take your multimeter, put one end on the negative battery post and one on the negative battery terminal and lift the terminal off, keeping the 2 meter ends on their respective spots. Obviously make sure the car is locked and has been so for more than a few minutes. The draw should be less than 40-50mA.

That would just be the total draw.

12-04-2014, 10:28 PM	#32
Andrew025 Senior Member Join Date: Jul 2013 Drives: Neptune GR86 Location: Portland Posts: 3,862 Thanks: 1,438 Thanked 3,505 Times in 1,806 Posts Mentioned: 60 Post(s) Tagged: 2 Thread(s)	I was planning on adding a switch to the extension for leaving it on all the time but just unplugging the extension and using the original OFT cable for flashing just to prevent any issues. __________________

12-05-2014, 06:19 PM	#35
ap5512 Senior Member Join Date: Nov 2011 Drives: 2013 SWP BRZ Location: NoVA Posts: 532 Thanks: 241 Thanked 142 Times in 97 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Noob OFT question...does the OFT NEED to be plugged in all the time? More specifically, if i were to buy a OFT, connect it and flash it...does it need to stay connected/plugged in? Soo noob, I know... __________________ "Don't be a don'ter, do be a doer" - Johnny Wu

12-08-2014, 09:14 PM	#38
Tenchi Senior Member Join Date: Feb 2014 Drives: Silver Ignition 6MT 10 series FR-S Location: Rochester NY Posts: 162 Thanks: 95 Thanked 66 Times in 36 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	OFT - Left it plugged in (3wks) and now car wont start Same thing happened to me. I Unplug it at night and it no longer happens. I freaked out when it first happened.

12-08-2014, 10:46 PM	#39
themajesticone Senior Member Join Date: Jun 2014 Drives: '13 UM86 Location: Bay Area, California Posts: 406 Thanks: 338 Thanked 176 Times in 112 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	lollllllllllllllllllll __________________ JRSC C30 91 oct \| JDL UEL Header \| Tomei Overpipe \| Milltek Front Pipe \| Milltek Catback \| SPL LCA v2 \| FA 500 v5 Coilovers 6k/7k \| SPC Front Camber Bolts \| Enkei RPF1 17x9 +35 \| 245/40 Michelin Pilot Super Sport

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12-04-2014, 03:57 PM	#29
JozhGoober Member Join Date: Oct 2013 Drives: 2020 718 GT4, 2013 FR-S (Turbo) Location: Spangdahlem, Germany Posts: 59 Thanks: 7 Thanked 37 Times in 21 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I don't think you want to do that, since the OFT wants to know when the ignition is off during a flash cycle. You'd dump the whole flash process.

12-09-2014, 07:53 PM	#40
ssyed Senior Member Join Date: May 2014 Drives: 2013 Frs Location: Toronto Posts: 166 Thanks: 77 Thanked 65 Times in 36 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	UPDATE: This week, I've had it unplugged and never had any issues with starting the car after parking for a few days. Well, I am glad to know, I wasn't the only one with this issue. Simply because its reassuring that it couldn't have been anything other than OFT. Last week when my car wouldn't start, I am sure nothing else could have been consuming power other than the OFT. Anyway, just for precaution, I keep jumper cables in my car now.

12-11-2014, 01:17 PM	#41
connorlug Member Join Date: Sep 2013 Drives: #1553 10 Series FRS Location: Long Island, NY Posts: 85 Thanks: 11 Thanked 39 Times in 23 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Somebody with an OFT just needs to check parasitic draw with it plugged in. Take your multimeter, put one end on the negative battery post and one on the negative battery terminal and lift the terminal off, keeping the 2 meter ends on their respective spots. Obviously make sure the car is locked and has been so for more than a few minutes. The draw should be less than 40-50mA.

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