Bad fuel gauge

About 4 weeks ago my the fuel gauge in my '05 became unusable. About half-way through the tank it drops to one blinking bar and says add fuel. The first time it happened at about 240 miles, and since that fillup it's happened at 275 and 283 miles. The MFD has been reading about 42 MPG (accurate), and it's been taking about 6 gallons to top-off. Has anyone else had this problem? So far this week the add fuel blink has been on for over 120 miles and I'm still driving based on MFD read-out.
Bryan

 

Exactly what I was looking for... how do I perform the fuel gauge inclination reset? Today I disconnected the 12V battery in hopes that would reset something.
Bryan

 

Where can I find the TSB?

 

Just to throw it out there I found the link to the fuel gauge inlcination meter reset. It worked perfectly, but the first step said to initiate the reset from the ODO - INCORRECT. It should be inititiated with Trip A displayed in Ready mode.

 

So far I've driven 200 miles, and it's at 1/2 tank... looks like the problem is solved.

 

Fuel Inclination meter reset:
A. Start car in Ready Mode
B. Go to "Trip A"
C. Power down
D. Make sure your foot is off of the
brake pedal.
E. Push in and hold the
“ODO/TRIP†button.
F. Turn the power switch ON
(push the “POWER†button twice).
G. Turn the “ODO/TRIP†button OFF,
then ON 3 times within 5 seconds.
H. Continue to hold the “ODO/TRIPâ€
button until the “ODO†indicator in
the display turns off and a 6–digit
code (######) is displayed.
I. Release the“ODO/TRIP†button.
J. Push and hold the “ODO/TRIPâ€
button for 5 seconds or more
again. The 6–digit code (######)
will then change to a 5–digit
code (#####).
K. After “1†is displayed at the 3rd
digit of the 5–digit code, release
the “ODO/TRIP†button.
L. Approximately 5 seconds after “1â€
is displayed at the 3rd digit, the
“TRIP A†indicators are displayed,
and the odometer returns to the
normal operation.[/i]

NOTE:
The “TRIP A†mileage will revert to
0.0 miles in this procedure.
Do not drive the vehicle before the
reset procedure has been completed.
HINT:
If a write error occurs, start the
procedure again from the beginning.

the 5 digits you see will be

X = first two digits
Y = middle digit
Z = last

X: Values Written Into Meter
(Longitudinal Direction)
Y: Write Status and Result
Z: Values Written Into Meter
(Lateral Direction)
Write Status and Result:
0: Writing
1: Write Completetd
2: Write Error
3: Write Canceled

 

Also, make sure you are on a level surface, like a garage floor. Otherwise you will screw things up worse than before.