![]() Volkswagen decided to also recall all vehicles that may have received parts from production batch “JD254” in addition to the previous decision to recall production batch JD253. January 20, 2021: New findings were presented to Volkswagen Product Safety committee. Durability testing of a pre-cracked part (JD254) with 5 times the minimum required amount of load cycles (according to VW specification) showed no failure. Ongoing analysis conducted to better understand failure mode and evaluate potential consequences. Identification of potentially affected vehicles started and risk evaluation initiated. The sub-supplier incorrectly believed that all JD254 parts had been successfully quarantined however, it was later determined that not all parts had been quarantined, and that parts from JD254 have been found on vehicles. This resulted in machining of some parts with JD253 that was out of specification. Parts with casting date JD254 are affected by this failure however, certain parts from JD253 that were machined together with the JD254 parts are also affected due to the extreme machine tooling wear caused by the JD254 parts. Two batches (JD253 and JD254) were affected by this failure. ![]() November 2020 – January 2021: Further investigation revealed an additional failure that had occurred previously (inconsistencies in the material properties of JD254). Volkswagen decided to recall all vehicles that may have received parts out of the production batch “JD253”. November 11, 2020: Topic was presented to Volkswagen Product Safety committee. Determining the full scope of potentially affected vehicles started and determining which vehicles may be equipped with parts from JD253. November 02, 2020: During the inspection a fractured part is found with Julian Date (JD) 253. October 27, 2020: Yard vehicle inspection and test drive initiated in order to understand behaviour of potential mis-build parts. October 06-26, 2020: Ongoing investigation, durability tests continue. Identification of potentially affected vehicles started. Crack inspection, material strength, and durability tests are also initiated on parts produced in the same lot and timeframe as the failed parts, in order to determine if the parts pose a risk to customers in possession of vehicles produced with the parts. Several tests are performed in order to duplicate the failure, without success. October 5-9, 2020: Investigation shows that the Versatec parts have been produced without the necessary engineering release and that the failed part is out of specification with regards to the machining in the failed area. ![]() Chattanooga begins daily emergency meetings, analysis started. October 03, 2020: Supplier Thyssen-Krupp informs Chattanooga about two (2) parts which failed in succession during tightening in the area of the strut mount. ![]()
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