2009 Toyota Sienna. Consumer writes in regards to engine overheating. The consumer stated he replaced the fan relay and thermostat. However, the vehicle continued to overheat. The dealer replaced the radiator and water pump, but the overheating continued. The dealer informed the consumer they looked into the cylinders with a borescope and saw marks on the cylinder wall which lead them to the conclusion that the head gaskets were bad and they would have to be removed and sent to a machine shop to see if they were warped and the cylinders and engine block would have to be inspected to see if there was an issue.

- Ringtown, PA, USA

2009 Toyota Sienna minivan developed corroded rear air-conditioning lines after only 4 years. Corrosion caused complete loss of A/C coolant. It cost me $118 to have the A/C system tested only to find out that it will cost me another $1578 to repair the problem...and there's no guarantee that this won't happen again in another 4 years. Dealership won't help. Toyota corporate won't help. It is a scam that they use untreated aluminum A/C lines that they admit are prone to corrosion in northern climates where salt is used on the roads. Easy fix: Paint the A/C lines! Toyota won't offer any help whatsoever! I have found an emotional state beyond rage.

- Plover, WI, USA

The contact owns a 2009 Toyota Sienna. The contact started the vehicle and there was an excessively loud rattling noise in the engine compartment. In addition, an odor of anti-freeze circulated inside of the vehicle. The failure only occurred when the vehicle was started. The vehicle was taken to an authorized dealer. The vehicle was not inspected or repaired for the malfunction. The failure mileage was 3,000.

- Mccoll, SC, USA