TECHNICAL BULLETIN
LTB00304NAS7
20-DEC-12
ISSUE ‘7’ CHANGES ARE HIGHLIGHTED IN GRAY
SECTION: 310

Fuel Gauge Operation / DTC U0128-00 Stored
AFFECTED VEHICLE RANGE:
LR4 (L319)
Range Rover Sport (L320)

VIN:
Model Year:

AA510742-DA656034
2010-2013

VIN:

AA212147-BA299999
BA700000-DA790997
2010-2013

Model Year:

CONDITION SUMMARY:
Situation: The fuel gauge may experience one or more of the following issues:
•

Fuel Gauge Erratic.

•

Fuel Gauge Not Working.

•

Fuel Gauge Fluctuating.

• Fuel Gauge Switches On/Off Intermittently.
If DTC U0128-00 is present, download the revised software to the Instrument Cluster. SDD must be loaded
with DVD 130 Patch 2 Calibration File 108 or later. If the problem remains after carrying out the download or
DTC U0128-00 is not stored continue with the Bulletin.
If the symptoms detailed above are present on the vehicle, please carry out the fuel gauge diagnostics
detailed in TOPIx section 310-01: Fuel Tank and Lines Diagnosis and Testing.
NOTE: SDD will be required to ascertain the fuel sender voltage readings.
If a failure to the harness or individual fuel sender cannot be verified at any point during the diagnostic stage,
then both fuel level senders and the flange should be replaced to avoid the possibility of a repeat repair.
For vehicles where DTC U0128 is not stored please monitor from the following VINs. From these VINs several
actions have been implemented including increased cross sectional area of the pump wires and a larger prepump filter: LR4 – CA626864; Range Rover Sport – CA752995.
Gold pin terminals for the fuel senders were introduced from production from the following VINs:
LR4 – BA595923; Range Rover Sport – BA712004.
NOTE: All current fuel sender service stock is gold pins.
Cause: 1) Software issue within the instrument cluster (DTC U0128-00); 2) Fretting corrosion across the fuel
sender harness pins inside the fuel tank (black connectors) or possible backed out pins in any of the following
areas, internal to the fuel tank (sender wiring), fuel pump module and/or flange assembly.
Action: Should a customer express concern, check if DTC U0128-00 is stored and carry out the download to
the instrument cluster if required. If DTC U0128-00 is not stored the first area to check before commencing
any further work is the vehicle harness to fuel tank flange connection. Also check all connections for backed
out pins.

NOTE: The information in Technical Bulletins is intended for use by trained, professional Technicians with the knowledge, tools, and
equipment required to do the job properly and safely. It informs these Technicians of conditions that may occur on some vehicles, or
provides information that could assist in proper vehicle service. The procedures should not be performed by 'do-it-yourselfers'. If you are
not a Retailer, do not assume that a condition described affects your vehicle. Contact an authorized Land Rover service facility to
determine whether this bulletin applies to a specific vehicle.
© Jaguar Land Rover North America, LLC

555 MacArthur Boulevard

Mahwah, NJ 07430

PARTS:
NOTE: Parts to be used only if no wiring fault is found.
CN100509 .............. Clip
LR000966 ............... Gasket
LR028456 ............... Flange
LR014999 ............... Rear (active) float sender - LR4
LR015940 ............... Front (passive) float sender - LR4
LR015377 ............... Front (passive) float sender - Range Rover Sport
LR021911 ............... Rear (active) float sender - Range Rover Sport

Qty:
Qty:
Qty:
Qty:
Qty:
Qty:
Qty:

1
1
1
1
1
1
1

TOOLS:
IDS with latest IDS-DVD and Calibration File; software first available on IDS-DVD130.02 v.108
Land Rover-approved Midtronics Vehicle Power Supply
Refer to Workshop Manual for any required special tools

WARRANTY:
NOTE: Repair procedures are under constant review, and therefore times are subject to change;
those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair
time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a
quantity of zero.

DESCRIPTION

SRO

TIME
(HOURS)

CONDITION
CODE

CAUSAL
PART

Fuel gauge inaccurate – Diagnostics only

19.90.89.30

0.60

X2

LR021911

Sender units – Fuel tank gauge – Front and rear– Renew

88.25.41

1.20

X2

LR021911

Update Instrument cluster software

88.90.04

0.20

X2

LR021911

Normal Warranty policies and procedures apply
REPAIR PROCEDURE
CAUTION: Ensure all ignition 'ON' / ignition 'OFF'
requests are carried out; failure to perform these steps
may cause damage to control modules in the vehicle.
CAUTION: A Land Rover-approved Midtronics Vehicle
Power Supply must be connected to the vehicle battery
during IDS diagnosis / module programming.
1. Connect the Land Rover-approved Midtronics Vehicle Power
Supply to the vehicle battery.
2. Turn ignition 'ON' (engine not running).
NOTE: IDS must be loaded with IDS-DVD130.02 v.108 or
later.
3. Connect the IDS to the vehicle and begin a new Symptom
Driven Diagnostics (SDD) session.
4. Follow the on-screen prompts, allowing SDD to read the VIN
and identify the vehicle.
5. From the Session Type selection screen, choose 'Diagnosis'.
6. Select the 'Selected Symptoms' tab, and then select:
• Electrical > Instruments > Gauges > Fuel gauge
7. Select 'Related' DTC view tab and view any stored DTCs.

• If DTC U0128-00 is stored in the Instrument Cluster,
continue to step 8.
• If DTC U0128-00 is not stored in the Instrument Cluster,
continue to step 13.
8. Select the 'Recommendations' tab.
9. From the Recommendations tab, select 'Run' to perform the
‘Configure existing module – Instrument cluster control
module' option.
• Follow all on-screen instructions to complete this task.
10. Exit the current session.
11. Disconnect the IDS and the Midtronics Vehicle Power Supply
from the vehicle.
12. Check for fuel gauge issue:
• If the issue is repaired, no further action is required.
• If the issue is not repaired, continue to step 13.
13. Refer to Workshop Manual section 310-01 and use a suitable
transmission jack to lower the fuel tank only enough to access
the top of the fuel tank.
14. The first area to check before commencing any further work is
the vehicle harness to fuel tank connection. A poor
connection may exist where the harness plugs into the flange
(see E135061). To test, with the ignition turned off and
connector in place, pull the connector upwards to give a worst
case scenario connection situation. Turn on the ignition, does
the gauge drop to zero, repeat several times. If fault is found,
remove connector and ensure pin connections are not loose
and that they are correctly retained in the connector housing.
If no fault can be found confirm the connector is fitted and
pushed fully home and continue with further diagnostics as
detailed TOPIx section 310-01.
15. Refer to Workshop Manual section 310-01 and perform the
appropriate diagnostic and repair procedure(s).
NOTE: Not all derivatives will have the same number of
connectors. Fuel tank module / sender components
removed from fuel tank for clarity.
•

Backed out pin / wire could be any of the wires on the
connector assembly(s); all must be checked.

16. If a failure to the harness or individual fuel sender cannot be
verified at any point during the diagnostic stage, then both
fuel level senders and the flange should be replaced to avoid
the possibility of a repeat repair.