One problem related to engine knocking noise has been reported for the 2012 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Sienna based on all problems reported for the 2012 Sienna.
The contact owns a 2012 Toyota Sienna. While driving various speeds, a knocking noise was present coming from the engine. The cause of the failure was not determined. The manufacturer was not notified of the failure. The VIN was not available. The failure mileage was 70,000.
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