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2005 Lexus SC400
Problem for Lexus 2005 SC400

Lexus SC400 fuel gauge problem




By kcw573 - usenet poster

" "
I have a Lexus SC400 that has had a wonky fuel gauge ever since I bought
the car. On filling the tank with gas to the pump cut-off, the needle
registers full but slides down to a 3/4 tank reading within about 15 miles.

If I continue to fill the car after the pump-shut off, I can still fill
more than a gallon without the tank overflowing, and the gauge behaves
like a normal car (stays at full for the next 50 miles).

Unfortunately, the gauge has completely ceased to operate and constantly
registers at empty right now. I'm guessing the problem is with the
fuel-sending unit but will have to take it for an unscheduled trip to the
dealer to confirm. The car has about 25,000 miles on it. Does anyone
know if this is a common problem with Toyota/Lexus?

Ryan

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Same Problem

Apr 21, 2009

-   I am driving a Lexus 92 sc400, I filled up the gas tank and drove about 20 miles, the fuel gauge needle went down to Half, after turning on the air conditioning, the needles would go down to a Quoter. The needle would go up to the Half after turning off the air conditioning. The needle would go up to 3/4 gauge while parking without turning on the air conditioning. I check the wire in the trunk, the wire was not loosened. Please advise what might be the problem. -   allenchangbi

Mar 24, 2009

-   my fuel gauge shows its empty on my lexus soarer,even if i fill it up,still shows empty.can any one help me on this,is it the fuel gauge in fuel tank thats faulty.do i need to get a fuel gauge relaced in fuel tank.is dia a problem on all soarers,mines a 2.5 twin turbo.-   reh786

Solution #1

posted on Nov 22, 2008
Not Rated)

Duddles
Duddles

Rank: Apprentice 
Rating: 0%, 0 votes
Any ideas on the same issue with a RX300? The tank is full, but the guage is reading MT?

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Solution #2

posted on May 14, 2008
Not Rated)

kcw573
kcw573 - usenet poster

Rank: Apprentice 
Rating: 0%, 0 votes
go to the trunk and remove the back panel which is very easy and check the
wiring to the top of the gas tank where the sender unit is, you never know
it just might be a loose wire or connection, mick from england
...
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Solution #3

posted on May 14, 2008
Not Rated)

kcw573
kcw573 - usenet poster

Rank: Apprentice 
Rating: 0%, 0 votes
: go to the trunk and remove the back panel which is very easy and check the
: wiring to the top of the gas tank where the sender unit is, you never know
: it just might be a loose wire or connection, mick from england

Thanks for the advice Mick. My gas gauge is suddenly working again (just
as I was driving to the dealer.) Hmmmm.

Rgds,

Ryan
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Solution #4

posted on May 14, 2008
Not Rated)

kcw573
kcw573 - usenet poster

Rank: Apprentice 
Rating: 0%, 0 votes
G'day

A mate of mine has a Soarer (SC400) with a similar problem, only it affects
most of his dashboard (e.g. for the first 20KM or so half the dashboard
doesn't even come up, and sometimes with a full tank of fuel, going around a
left hand corner hard results in the fuel warning coming up
Says there is a crowd in Australia who can fix it, so I will enquire and let
you know what the answer is.

Later

Chris
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This Problem Also Relates To: 2000 Lexus RX 300 1990 Lexus LS 400 1997 Lexus ES 300 2002 Lexus ES 300 2002 Lexus RX 300 2004 Lexus LS 430 2000 Lexus ES 300

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