2011 Freightliner Business Class M2 Recalls

The Office of Defects Investigation (ODI) received Early Warning Reporting (EWR) data from the manufacturer that indicated some number of subject vehicles had allegedly experienced a fracture of one or more support brackets resulting in an unsecured air brake reservoir.This could result in a loss of air pressure necessary for proper service brake application and a potential road hazard if the reservoir separates from the vehicle in operation.By letter dated August 15, 2012, Daimler Trucks North America LLC (DTNA) has notified ODI that it has initiated a safety recall (identified by NTHSA Recall No. 12V-405 and DTNA Recall No. FL-631) to address a safety defect in approximately 1,663 model year (MY) 2009 through 2012 Freightliner 114SD, Business Class M2, Cascadia, Coronado, Sterling 9500 and Western Star 4700 trucks manufactured from July 7, 2008 through December 15, 2011, originally equipped with a specific perpendicular oriented air brake reservoir support bracket (P/N 12-22981-000).To date ODI is unaware of any bracket failures that resulted in a complete separation of the reservoir from the vehicle.Affected owners will be notified by DTNA beginning October 15, 2012 and affected vehicles will have the subject air brake reservoir support brackets replaced with a more robust bracket.Repairs will be performed by DTNA authorized service facilities.Copies of DTNA's reimbursement plan for pre-notification remedies will be submitted to ODI as a supplemental report when available.Accordingly, this investigation is closed.

On August 29th 2011 the Office of Defects Investigations (ODI) opened this Preliminary Evaluation (PE11-028) on Daimler Trucks North America (DTNA) for output shaft failures located in the forward-rear axle carrier of certain class 8 vehicles equipped with Arvin Meritor RT series output shaft assemblies.At the time of this (PE) opening, ODI was aware of a field campaign and two field reports thought to be related to this alleged safety concern.The DTNA campaign address a risk resulting from an incorrect heat treatment process of the output shaft (SF441AB); which was initially believed to be associated with the two field reports.On October 21st 2011 ODI received DTNA's PE Information Request (IR) letter response which indicated no additional complaints or field reports related to the alleged defect.ODI also learned that the two original field reports noted in the opening resume were U-joint failures and were unrelated to the service campaign. DTNA claimed a total of 96 warranty claims, all related to performing the service campaign but unrelated to any field failures. Upon receiving DTNA's PE-IR letter response ODI learned that even if a fracture were to occur in relation to the alleged defect, it would be located at the base of the splined section of the shaft opposite the output yoke and inside the axle housing.The Output shaft assembly is bolted into the axle housing and will remain secure in the event of a fracture. Based on the fact that there are no consumer complaints, injuries or field reports and the benign consequence of the alleged defect, ODI is closing this investigation.ODI will continue to monitor this field campaign.

This investigation was opened after ODI was contacted by a fleet alleging that in certain situations, such as a light brake peal application during a low speed operation, the brake lamps fail to illuminate on the rear of the bus.ODI confirmed the problem with two fleets.On April 29, 2010, Daimler filed a defect report concerning this issue. The stop lamps may be intermittent during light brake applications.They are still evaluating the remedial program and will furnish this information to ODI when it is available. This safety recallresolves the issue raised by this investigation. Hence, this investigation is closed.