2010-2011 LR4 Fuel leak investigation - FYI

Troy A

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https://www.nhtsa.gov/vehicle/2010/LAND ROVER/LR4#investigations

1 Investigationsfor 2010 LAND ROVER LR4
FILTER INVESTIGATIONS BY AFFECTED COMPONENTS

All (1)FUEL SYSTEM, GASOLINE (1)
November 5, 2020 NHTSA ACTION NUMBER: PE20018OPEN INVESTIGATION
Fuel Tank Flange Leak

NHTSA Action Number: PE20018

Components FUEL SYSTEM, GASOLINE

Opened From: November 5, 2020–Present

Summary

The subject vehicles are model year (MY) 2010 through 2011 Land Rover LR4 (L319) and Range Rover Sport (L320) vehicles equipped with fuel tank flange part number AH229039AB. The Office of Defects Investigation (ODI) has received six consumer complaints (VOQs) alleging fuel leakage from cracked tank flanges in the subject vehicles. In addition, ODI identified 5 field reports and 200 warranty claims related to the alleged defect in the subject vehicles as part of the peer vehicle field data analysis in Recall Query RQ19-004 regarding tank flange leaks in MY 2010 through 2012 Jaguar XF vehicles. In 2013 Jaguar Land Rover LLC (JLR) submitted a foreign recall report related to the alleged defect in the subject vehicles (Foreign Recall 13F-098). The foreign recall was conducted in eight Middle East countries (Bahrain, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, United Arab Emirates, and Yemen).

In response to ODI's information request letter for RQ19-004, JLR indicated that a modified fuel tank flange was implemented as a running change in MY 2011 production of the subject vehicles. Internal ribbing was added to the modified flanges, which increased the strength and creep resistance of the parts in the areas were cracking had been observed. Tank flanges with internal ribbing are identified by part numbers AH229039AC and AH229039AD. The modified flanges were used in approximately 27,882 MY 2011 through 2015 LR4 vehicles and 32,822 MY 2011 through 2013 Range Rover Sport vehicles (peer vehicles). A Preliminary Evaluation has been opened to assess the failure rate and severity of the fuel tank flange cracking condition in subject and peer vehicles sold in the United States.

The following VOQ numbers are associated with this opening resume: 11280630, 11220260, 11155570, 11139276, 11132102, 11098107.
 

Awitt1134

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My 2012 still suffered the problem, so guessing the "modified" part is still a bit hinky.
Did your check engine light pop up? And if so what were the codes? I smelled gas a few months ago when I was driving for work and it was there all night. Didn’t smell it after that but had some issues with mileage and my sensor, I thought my sensor/gauge was broken. Smelled it recently again every time I drive and had CEL and hissing, no vacuum leaks though…. Pretty sure it’s this, so jw. I have a 2012 also. &thanks in advance if you reply!
 

LB Bill

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Pretty sure it’s this, so jw. I have a 2012 also. &thanks in advance if you reply!
This is an old thread. Search and view the more recent threads on this issue. There's a massive official recall of LR4's and RRS's due to the leaking flange. Most of us are receiving notification letters, got mine two days ago (there's a copy of one already posted on here). Almost certain your truck is involved. Whatever (if) JLR might have attempted as a fix in the past, apparently did not work.
 

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