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Old 12-30-2021, 11:07 PM #1
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Exclamation URGENT PLEASE HELP! 2000 Toyota 4Runner

So I was doing a LED Light conversion on my dash today. Got everything buttoned up and it looks great. But then I noticed that my gas gauge was at 0 and my gas light was on! took It back apart and everything looked good. (I have a full tank but its still reading as 0). What should I do???Im not very inclined when it comes to car electronics.

PLEASE HELP!!!
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Old 12-30-2021, 11:10 PM #2
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Did you disconnect the negative battery terminal while you were doing this LED light upgrade?
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Old 12-31-2021, 12:45 AM #3
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I'm willing to put money down the gas light has a current bleed, causing the LED to be constantly lit. As for the gauge, I'd suspect the plug in the back may not be seated fully or been forgotten. Unless you were less than gentle and possibly damaged the ribbon wire. At any rate, swapping in an LED won't cause the gas gauge to stop functioning so I wouldn't suspect these two issues to have a common denominator - unless perhaps Toyota made the gas light go off if the gauge stops being responsive? That doesn't sound familiar to me, but I wouldn't be surprised either. I'm almost positive the low fuel light is one of the common positions with a current bleed, causing many to stick with incandescent bulbs
Disconnecting the battery terminal would not have made a lick of difference; there is zero reason to have it disconnected when replacing a bulb and similarly no reason why failing to do so would have this result
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Old 12-31-2021, 11:25 PM #4
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If the above doesn't work, maybe try this fix? Toyota 4Runner Gas/Fuel Gauge Fix - YouTube

This involves splicing a wire to fix the original ground and having a fresh one under the seat. I had to do this to my 4Runner a while back because my gas gauge was acting erratic and then later discovered my cars VIN match the TSB EL010-00 bulletin (see: http://ww2.justanswer.com/uploads/sk...00_runner3.pdf). This fixed my gauge and have not had any issues since but i'm not sure this will fix your issue because you were messing with your gauge cluster. Nothing to lose with this fix and its very cheap in supplies.
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Old 01-01-2022, 01:41 AM #5
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Not sure about the gauge, but for what ever reason the LED doesn't work in the low fuel light and it will be constantly on with an LED. So you need to just use a regular bulb on that light
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Old 01-01-2022, 05:27 PM #6
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I remember someone else reported this issue a couple months ago, don't remember the thread though. Basically its what was mentioned above about the gas light being an LED. It requires significantly less power to light up an LED vs the stock bulb which is why its on all the time. You need to change it back to the original style bulb. No benefit or point to having it as an LED. As far as the gas gauge im not 100% sure on that as mine is pretty wonky as well
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