BZ4X召回快2周了，無任何回應，跟我說是4個螺絲問題我不信
附上toyota給美國高速公路安全局的事故招回報告
總共全球有三輛,台灣一輛美國兩輛,左前輪螺栓全部鬆脫連帶左前輪脫落
美國是六月三號及八號報上去,六月十八決定全球招回,共661輛
當時檢視這三輛生產歷程及當時產線,查不出原因。
到現在又過一個月
報告簡述問題的原文
5. Description of Problem:
The subject vehicles are equipped with wheels attached to the vehicle with hub bolts. After low-mileage use, all of the hub bolts on a wheel can loosen to the point where the wheel can detach from the vehicle. The cause of the issue and the driving patterns under which this issue could occur are still under investigation. If a wheel detaches from the vehicle while driving, itcould result in a loss of vehicle control, increasing the risk of a crash.
6. Chronology of Principal Events:
Mid-May 2022 – Late June 2022
Toyota received a field technical report from the Taiwan market indicating separation of the front left wheel from the vehicle. Toyota recovered the wheels and hub bolts from this vehicle for investigation.
Toyota then received two field technical reports from the U.S. market. One of the reports indicated loose hub bolts of the front left wheel and the other indicated a separation of the front left wheel from the vehicle. Toyota reviewed the production process at the vehicle assembly plant and did not identify any abnormalities on the hub bolt tightening history of these three vehicles. Toyota also reviewed the assembly process of the wheel and hub bolts at the assembly plant and did not identify any abnormalities. In addition, although damage was observed on the wheel recovered from the vehicle in the Taiwan market, the damage was believed to be a result of the wheel separating from the vehicle and the cause of the loosening of the hub bolts was not able to be identified. Toyota continued to investigate and conducted a driving test using mass production wheels and hub bolts that were tightened to specification. The testing showed that the hub bolts loosened under certain severe driving patterns.
June 20, 2022
While the cause of the issue and the driving patterns under which this issue could occur are still under investigation, the current information indicates that all of the hub bolts on a wheel on the subject vehicles can loosen to the point where the wheel can detach from the vehicle after lowmileage use. Thus, Toyota decided to conduct a voluntary safety recall campaign and will instruct the owners of the subject vehicles not to drive their vehicles. Toyota will continue to investigate the issue and develop a remedy.
As of June 18, 2022, based on a diligent review of records, Toyota’s best engineering judgment is that there are two Toyota Field Technical Reports (received between June 3, 2022 and June 8, 2022) and zero warranty claims that have been received from U.S. sources that relate or may relate to this condition and which were considered in the decision to submit this report.
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