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Toyota Preliminary Evaluation PE08041: STEERING INTERMEDIATE SHAFT BINDING
2004 Toyota Sienna
STEERING INTERMEDIATE SHAFT BINDING
- The Office Of Defects Investigation (ODI) opened a preliminary evaluation, PE08-041, to investigate allegations of steering binding or increased steering effort caused by corrosion of steering intermediate universal joints in model year (MY) 2004 Toyota Sienna vehicles.Toyota's response to ODI's request for information in PE08-041 indicated that Toyota has been investigating reports of increased steering effort in MY 2004 through 2006 Sienna vehicles since 2005. Toyota determined that a combination of thermal damage and subsequent water intrusion could lead to corrosion of the lowermost universal joint installed on the steering intermediate shaft of the subject vehicles. Toyota has made production changes since September 2006 to address these concerns and has issued two technical service bulletins to its dealerships to provide instructions on diagnosing and repairing complaints related to corrosion of the intermediate shaft. Toyota has not determined that a safety defect exists in the steering system of the Toyota Sienna vehicles and provided test data showing that the effect on steering effort is minimal, even for parts with relatively severe corrosion. ODI analyzed complaint and warranty data relating to the following symptoms: (1) steering intermediate shaft binding or locking; (2) corrosion of the steering intermediate shaft universal joint; (3) complaints of increased effort to turn the steering wheel from neutral or return to neutral after turning (e.g., hard steering or steering binding); or (4) noise while steering.these analyses revealed that the subject vehicles have experienced a total complaint rate of 81.0 per 100,000 vehicles and a total warranty claim rate of 3.0 percent.ODI's analysis found that approximately two-thirds of complaints were for noise only.similar analysis of the warranty data showed that 91 percent were related to noise concerns. ODI has upgraded this investigation to an engineering analysis (EA08-024) to conduct testing to assess the effect of the alleged defect on steering effort in the subject vehicles.
- Documents (9)
- OCC 1/16/2009 TO TOYOTA GRANT CONFIDENTIAL TREATMENT TO TOYOTA 9/16/2008 LETTER TO OCC
- OCC 12/16/2008 LETTER TO TOYOTA GRANT CONFIDENTIA TREATMENT TO TOYOTA 9/30/2008
- TOYOTA 9/30/2008 LETTER TO OCC REQUEST CONFIDENTIA TREATMENT
- CLOSING RESUME APPROVED * 10/28/08 * p
- TOYOTA 9/30/2008 ATTACHMENT 2, RESPONSE 8 & 9 (THIS WAS ON A CD)
- TOYOTA 9/16/2008 LETTER TO OCC REQUEST CONFIDENTIAL TREATMENT
- TOYOTA 9/30/2008 LETTER TO ODI
- IR TO MFR * 07/24/098 * p - Information Request to Toyota re: Allegations of Steering Binding.
- OPENING RESUME APPROVED * 07/10/08 * p
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