The technical bulletin addresses an issue with fuel gauge operation inaccuracies in multiple Land Rover models, including the LR4, LR2, Range Rover Sport, and Range Rover, produced from 2010 to 2013. The cause of this issue is fretting corrosion across the fuel sender harness pins in the fuel tank.
Symptoms
The fuel gauge may be inoperative or inaccurate, causing customers to express concern.
Repair Procedure
The repair involves replacing the fuel sender harness modification, which requires special tool 418-116A/YRWSOOO1O. The procedure involves disconnecting and reconnecting the fuel sender harness, replacing the black two-pin connectors, and securing the splices with tie straps.
It is essential to follow the provided instructions carefully to avoid a poor repair and ensure the correct crimp location. A gentle pull test should be performed after crimping each connection to ensure a sufficiently strong bond.
Manual:
Download: Tech Bulletin: LRBOOS66NAS4 – Fuel Gauge Operation Inaccurate – Multiple Models (2010-2013)
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