Owners of 2010-2011 Range Rover Sport LS vehicles may complain about an erratic, inoperative or fluctuating fuel gauge, or a gauge intermittently switching on/off.
These issues may be caused by a poor harness connection or backed-out terminals inside the fuel tank, fuel pump module or flange assembly.
NOTE: If the fault is intermittent and cannot be verified during diagnosis, all of the checks in this TSB should be carried out and repaired as required. If a failure to the harness or individual fuel sender cannot be verified at any point during the diagnostic stage, both fuel level senders and the fuel pump module assembly should be replaced to avoid the possibility of a repeat repair.
PARTS TO BE USED ONLY IF NO WIRING FAULT IS FOUND
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
IDS with latest IDS-DVD and calibration file
Land Rover-approved Midtronics Vehicle Power Supply
Refer to workshop manual for any required special tools
- If the fuel gauge drops to “0” (empty), turn the ignition OFF, remove the connector and verify pin connections.
- After repairing harness/connector pins, perform steps 2 and 3 again.
- If the concern is verified to be in the flange area and all connections are secure, replace the flange assembly.
- After replacing the flange assembly, perform steps 2 and 3 again.
- If no fault was found, continue to Fuel Tank Diagnosis and Testing.
FUEL TANK DIAGNOSIS AND TESTING
- Backed out pin/wire could be any of the wires on the connector assembly(s). All must be checked (Figure 2).