Table 1 shows nine common engine and engine cooling related problems of the 2005 Toyota Sienna. The number one most common problem is related to the engine and engine cooling (14 problems). The second most common problem is related to the engine cooling system (seven problems).
The contact owns a 2005 Toyota Sienna. The contact stated while driving 65 mph, the oil warning light illuminated. The contact pulled over, opened the hood, and added additional oil. The vehicle was towed to an independent mechanic, who informed him that the engine needed to be replaced. Read details...
The contact owns a 2005 Toyota Sienna. The contact stated that while driving at various speeds, there was an abnormal smoke odor emitting from the front of the vehicle. The vehicle was not diagnosed or repaired. Read details...
Under Toyota's customer support program, a technical service bulletin was put out saying that 2005 Toyota Siennas had faulty radiators that cracked in cold weather and could lead to coolant leakage and subsequent engine seizure (safety report #0506). Read details...