Fuel gauge all over the place?

[Goggo Member Find all posts View Profile Close Goggo]

Hi guys, I have a 2010 Prado 150 D4D and have just noticed the fuel gauge doing strange things. I filled it up the other day and after driving for sometime the fuel gauge got down to 3/4 full and then lower as I drove further, all good so far. It was just above 1/2 full when I stopped driving for the day and when I got back in I noticed it was back at 3/4 full again, I then drove a couple of hours and it when down to nearly 1/2 again. Today I drove it again and it was on 3/4 full. It's only done 114,000 kms surely it can't be too much. Has anyone else heard of this happening? Cheers

[carl1965 Lurker Find all posts View Profile Close carl1965]

Mine does that occasionally haven't been able to figure it out. Would be good to find an answer. It only ever happens when its between 1/2 and 3/4 tank but only occasionally.

[Goggo Member Find all posts View Profile Close Goggo]

yeah mine has only just started doing it that I've noticed. Thanks for that. Cheers

[JimmyC Advanced Member Find all posts View Profile Close JimmyC]

I've found that with mine too and from what I can figure out it has to do with the fuel transfer between the two tanks. I get it fairly extreme with a long range tank. Doesn't seem to effect anything and the car functions as normal. As with most cars the gauge is just a general 'guide'.

[cbm8880 Senior Member Find all posts View Profile Close cbm8880]

Diesels are pretty consistent with fuel usage (towing aside). I tend to use my odometer/trip meter to decide when I fill up. I have done so ever since my old 80 series got stuck at 1/4 tank and I ran out of fuel.

[Goggo Member Find all posts View Profile Close Goggo]

yeah that makes sense.

[topic97 Senior Member Find all posts View Profile Close topic97]

I have the same issues with my 120 petrol.
Had heard that apparently there may be software updates from Toyota that may fix the issue, but I haven't bothered to chase it up yet.

I just watch the odometer & go on distance to empty.

[Goggo Member Find all posts View Profile Close Goggo]

I just filled up and the gauge was just above half full and it took 60 litres which seems normal and everything seems to be back to normal.

[Ningy92 Lurker Find all posts View Profile Close Ningy92]

hi all I am new to this forum and have had this problem. I first noticed it when I change the exhaust over on my 09 Kakadu. for shits and giggles when I filled up next I tried rocking the car once I had filled the tank and noticed that there was a big air lock and I have a feeling this is what was causing the fuel gauge to play silly buggers. I didn't have any problems with the fuel gauge dropping and rising after that

[yowie Advanced Member Find all posts View Profile Close yowie]

Same happens to my petrol 150, a bit of variation up and down even for short trips. Does not do it when nearing low.

[gxllouie Member Find all posts View Profile Close gxllouie]

Mine has been doing this for the last 100,000km. The gauge works for the first 1/4 and then drops to 1/2. It then works again when 1/2 fuel used. Sometimes it bounces a bit between the 2 points.

I have had both senders and cluster replaced. Still no joy.

The regional rep has looked at it (in December) and I am still waiting for Toyota to book it in to do something about it.