Problems with 2005 Toyota Sienna ENGINE AND ENGINE COOLING

A/c went out april 2012. blows hot air. according to online forums this happens a lot in sienna's - 2004 to 2006 models. we have 5 children in the vehicle and cannot take them very far even with the windows down or they could possibly get heatstroke. they are sweated wet by the time we get from point a to point b. we open all windows and the rear ones that only open 2 inches as well. forum link where i found this info (same issue as our sienna) is http://www.toyotafans.net/2004-sienna-ac-problems-t2523-st20.htm -the seat belts in our sienna lock up, found the recall on this site so will be taking it to the dealer for that. not just the middle row seat belts though. it is rear seatbelts as well as front driver and passenger seat belts. -the tail light works when it decides to. sometimes it is off so we get pulled over - until the police officer taps it, and it decides to come back on. on a side note - the left speaker system ...

Tl* the contact owns a 2005 toyota sienna. the contact stated that while having the vehicle serviced, the mechanic noticed that the radiator was leaking. the radiator caused the vehicle to stall and overheat due to loss of fluid. the contact took the vehicle to a dealer and the dealer stated that the radiator needed to be replaced. the radiator was replaced at the contact's expense. the failure mileage was 67,000.

Tl* the contact owns a 2005 toyota sienna. the contact stated that noises were heard from the dashboard. the noise had not caused any problems with the vehicle. the vehicle was taken to the dealer, but the dealer was unable to determine what caused the noise. the failure mileage was 112,000 and the current mileage was 136,420. updated 4/2/12 *cn

The radiator on my 2005 sienna developed a crack on the plastic end cap at 54,00 miles. a three inch crack. i had no indication of a problem developing it happened quickly and left my wife stranded. i was informed by the dealer that it was not under warranty because it is not part of the drive train. therefore the 60,000 mile warranty did not apply. a friend told me that his 2005 sienna was covered by and extended warranty because toyota identified a problem with radiators cracking. i sent my comments/complaint to toyota who, as usual denied my claim. they said the extension only applied to 2005 siennas manufactured before september and guess my toyota was manufacturer's after that date. i guess they did not fix problem for vehicles after september like they thought. i completed the repair myself. *tr

2005 toyota sienna xle awd - slow leak in radiator consistent with tsb regarding cracking of plastic in cold weather conditions lead to overheating of vehicle. radiator was replaced ($600+) as well as heads needed to be removed and milled ($2000+). *tr

A/c compressor failure on 2005 toyota sienna le minivan. *tr

The a/c in my 2005 toyota sienna started blowing hot air out of the driver side vents. the compressor kept kicking on and off. this occurred everytime i used the a/c. after replacing the compressor twice, we still have problems with hot air coming out of the vent while the a/c is on. now the van today 4/5/2010 has completely stopped blowing cold air and only blows hot air when the a/c is turned on. we took it to the dealer and were told the a/c pulley has not burned up. there was a technical service bulletin on this issue. toyota technical service bulletin ac003-05 but it only covers vehicles until 36,000. since the problem occurred after that mileage, we are not covered. this is the third major issue i have had with this 2005 van. i have had the back door gas shocks replaced under a recall and the entire front driver's door replaced under a recall. the fix for the a/c is estimated at $4,000! *tr

Radiator on 2005 sienna sprung a leak and drained the coolant dry within a half day. engine overheated and vehicle had to be stopped on roadside. water was poured to replace missing coolant allowing owner to get home. brought to toyota service center the next day. owner opted for a non-toyota replacement radiator (owner was told the old radiator was beyond repair) since a toyota part would have taken days to procure. two such replacements were attempted to be installed. neither one fit. not only was a toyota radiator unavailable immediately, it cost $200 more. owner had to be without transportation for at least 4 days at his expense (a rental). extended warranty expired at 100,000 miles; incident happened at 104,000 miles. *tr

Tl*the contact owns a 2005 toyota sienna. the contact stated that both the driver and passenger side doors were inoperable. the keyless entry would not operate and she could only enter the vehicle manually. the contact had to manipulate the lock entry in order to enter and exit the vehicle by holding the manual lock in place while closing and/or opening the door. the radiator was also in need of repair. no repairs have been performed. the vin was unknown. the failure and current mileages were over 100,000.

Vehicle caught fire spontaneously during normal use. fire started in the area of exhaust muffler and quickly spread into the cabin. *tr

On december 5, 2007, i came out of costco to find the fire department had already put out the engine fire on my 2005 toyota sienna - absolutely no warning. it happened after i had gone in to shop so the engine was completely off with no person in it. *tr

Dt*: the contact stated the vehicle had difficulty switching gears and caused acceleration issues. the service dealer stated the computer system adjusted to the driver and this was a normal function. however, the contact stated the gears did not shift properly. updated 10/18/2006 - the vehicle would hesitate when picking up speed. the check engine light illuminated. the dealer found code for evap purge valve. the technician found the vacuum lines off at intake. *nm

Vehicle has excessive spark knock at low speeds, starting from a stop and at normal driving speed when engine is under a load. spark knock worse when engine is warmed up and during warm weather. changing octane level does not help spark knock. this has been happening since vehicle was bought in april 2005. vehicle has been back to the dealer several times to try to fix the issue to no avail. *jb

Tl* the contact owns a 2005 toyota sienna. the contact stated that the check engine and battery warning lamp was illuminated. he also stated that the engine temperature rose and caused the vehicle to overheat. the vehicle was taken to the dealer who diagnosed that the air conditioner compressor was defective and needed to be replace yet the remedy failed to repair the problem. the manufacturer was made aware of the failure who did not offer any assistance becuase the vehicle was repaired four times prior under factory warranty. the vehicle was not further repaired. the failure mileage was 10,834 and the current mileage was 83,113. updated 07/20/11*lj

Coolant dripping under the muffler when the brand new van was driven 955 miles and the dealer still fixing it. this is the third time the van is in the dealer for the same problem and totoally they has spent 15 days. they said it was becasue something was wrong with the rear heater core.*ak