IS F (2008-2014) Discussion topics related to the IS F model

When Does the Gas Light Come On?

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Old 07-30-14, 08:45 PM
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daniel3ooo
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Default When Does the Gas Light Come On?

I'm at 1/8th tank and a range of 24 miles but the light hasn't come in yet...

I recently taped off the AFS to block it from blinking (2012 headlights)..hoping I didn't screw anything up
Old 07-30-14, 08:48 PM
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melbitoast
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Usually b/t 1/8 to 1/16. My friend and I have taken both ours Fs just below the actual E line, so you've got more than 24 miles.
Old 07-30-14, 09:15 PM
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v8sten
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well when m fuel light comes on i have to put 13.5 - 14 gallons in it to fill up. so lets say 13.75 gallons to be safe. now lets do some math.

16.9 - 13.75 = 3.15

3.15 x 17 mpg (roughly) = 53.55 miles to completely empty
Old 07-30-14, 09:45 PM
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daniel3ooo
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Does the 16.9 include the reserve? Or us there a way to check if the light works?
Old 07-31-14, 05:50 AM
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lobuxracer
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Originally Posted by v8sten
well when m fuel light comes on i have to put 13.5 - 14 gallons in it to fill up. so lets say 13.75 gallons to be safe. now lets do some math.

16.9 - 13.75 = 3.15

3.15 x 17 mpg (roughly) = 53.55 miles to completely empty
My car is exactly the same as this.

Originally Posted by daniel3ooo
Does the 16.9 include the reserve? Or us there a way to check if the light works?
16.9 is total capacity. There is no "reserve" there is only a low fuel level light. The countdown to zero miles still leaves a lot of room for the driver to get to a fuel source. I've driven over 50 freeway miles after I saw zero on the mileage countdown.
Old 07-31-14, 06:23 AM
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zen
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mine come on around 20-22 miles left on the odometer
Old 07-31-14, 07:45 AM
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scamsel
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hey, isn't it 'so bad' to drive on such empty tanks?
Old 07-31-14, 08:03 AM
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ACEtheOG
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For the Canadians around here, my light comes on when I drop below 35km range. The gauge still shows one block.

I've played chicken with the light a couple times and the lowest I got the range indicator was 2km lol.
Old 07-31-14, 09:18 AM
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cremaster
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Originally Posted by scamsel
hey, isn't it 'so bad' to drive on such empty tanks?
i've heard this, also. that at the very bottom of the tank are various deposits that accumulate (i'm assuming if you use different brand gas, since they all add their own additives/mixture, etc.) and that running your tank all the way down will circulate those deposits into the fuel system. maybe this applies more for older vehicles?
Old 07-31-14, 10:22 AM
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daniel3ooo
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Light came on, on my drive to work today at 19 miles. Whew, guess I didn't break anything after all
Old 07-31-14, 11:27 AM
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Originally Posted by lobuxracer
16.9 is total capacity. There is no "reserve" there is only a low fuel level light. The countdown to zero miles still leaves a lot of room for the driver to get to a fuel source. I've driven over 50 freeway miles after I saw zero on the mileage countdown.
And here I was in full panic mode when I was sitting on the freeway with 4 miles left to 0 and the light glaring in my face. Thanks for the info
Old 07-31-14, 05:32 PM
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lobuxracer
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Originally Posted by scamsel
hey, isn't it 'so bad' to drive on such empty tanks?
No. There is a subtank inside the gas tank to ensure the pump is continuously bathed in fuel.

Sediment in the tank would have to get through the sock on the fuel pump and the filter in the tank before it could possibly get to the fuel system. You would have to buy gas with sand in it to cause harm to this system. Toyota is VERY conservative with their fuel system designs.
Old 07-31-14, 10:47 PM
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kdm
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So GOOD to know this. I was in full panic mode when I had 3 miles left before I arrived at the nearest gas station


Originally Posted by lobuxracer
My car is exactly the same as this.



16.9 is total capacity. There is no "reserve" there is only a low fuel level light. The countdown to zero miles still leaves a lot of room for the driver to get to a fuel source. I've driven over 50 freeway miles after I saw zero on the mileage countdown.
Old 08-01-14, 06:41 AM
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scamsel
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Originally Posted by lobuxracer
No. There is a subtank inside the gas tank to ensure the pump is continuously bathed in fuel.

Sediment in the tank would have to get through the sock on the fuel pump and the filter in the tank before it could possibly get to the fuel system. You would have to buy gas with sand in it to cause harm to this system. Toyota is VERY conservative with their fuel system designs.
ha cool, good to know thx

out of curiousity, how accurate is everyones mpg calculator on the dash?
Old 08-01-14, 08:13 AM
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lobuxracer
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Originally Posted by scamsel
...out of curiousity, how accurate is everyones mpg calculator on the dash?
Ballpark OK. Depends a lot on how many key cycles. If you fill up and drive until the light comes on, it's very accurate. If you start and stop the engine a lot, it can be awfully bad.

I tracked this on a spreadsheet once with my IS350.
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