Suspension noise, struts or alignment

On July 29, 2019, the Office of Defects Investigation (ODI) opened EA19002 to investigate instances of alleged rear lower control arm failures in 2013-2018 Nissan Altima and 2016-2018 Nissan Maxima vehicles. At the time the investigation was opened ODI had 91 consumer complaints alleging rear lower control arm failures in the subject vehicles.ODI was concerned about these complaints because many of them alleged an increased steering effort or loss of vehicle control.At the time these complaints were received, ODI was also aware of a proactive service campaign addressing 2013 Nissan Altima in salt-belt states for a similar concern. Since opening the investigation, ODI has confirmed, based on consumer complaints, warranty data, and testing conducted by Nissan and ODI, that owners of the subject vehicles are experiencing a corroded bushing at one of three mounting points of the control arm to the rear subframe.ODI has also confirmed that drivers become aware of the problem because of sound and abnormal vibrations. In addition, the failure mileage is typically over 113,000 miles at the time of failure.In conjunction with Nissan and VRTC, ODI participated in testing to assess the potential safety consequence of a bushing failure.It was found the Vehicle Dynamic Control system allows the driver to maintain vehicle control in the event of a bushing failure.With between 7 to 13 years of field exposure, ODI is aware of only one low speed crash allegation describing minor contact with

PE18-013 was opened on December 1, 2018, with 4 complaints to ODI alleging incidents of the lower control arm fracturing at a connection point to the vehicle chassis due to corrosion. ODI has received an additional 87 complaints since the PE was opened. During PE18-013, Nissan indicated model years 2013-2018 shared a common rear lower control arm design. Nissan provided complaint and warranty data regarding 48 incidents of the subject failure. The majority of the complaints are from vehicles registered in salt belt states. There have been no crashes, injuries, or fatalities confirmed as of this date. Nissan advised that it has conducted testing to assess safety risk. Nissan states that due to low incident rate, high detectability, and low risk of adverse vehicle dynamics, it does not believe the subject lower control arm failure poses an unreasonable risk to motor vehicle safety.This preliminary evaluation has been upgraded to Engineering Analysis (EA) 19-002. During the EA, ODI will continue to collect and analyze complaint and field data in its efforts to fully assess the scope and frequency of the alleged defect. More importantly, ODI will also seek additional information and data regarding the potential safety consequences of rear lower control arm failure, both from evidence collected from field failures and through more rigorous and comprehensive vehicle testing to be conducted by either Nissan and/or NHTSA.The ODI reports (VOQs) cited above can be viewed at NHTSA.gov u