Three problems related to radiator hose have been reported for the 2007 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Sienna based on all problems reported for the 2007 Sienna.
Oil cooling hose broke and all engine oil leaked from engine. Vehicle was in motion but made to parking spot. No warning of event and no dash/engine light signaling problem. Only oil on ground under van signaled problem. Van was subjected to recall in 2011 which replaced hose. Dealer replaced parts as repair with a complete redesigned part removing rubber hosed all together. This was not a recall but owners expense. Manufacturer never notified owner of this defective part or event possibility.
The contact owns a 2007 Toyota Sienna. While driving 60 mph, the contact noticed smoke coming from the rear of the vehicle without warning. The contact pulled the vehicle over to a nearby fuel station. The vehicle was towed to the dealer where it was diagnosed that the engine oil cooling hose needed to be replaced. The vehicle was repaired. While driving 25 mph, the steering wheel failed to turn left or right without warning. The vehicle was taken to the dealer where it was diagnosed that the drive belts in the tensioning system needed to be replaced. The vehicle was not repaired. The manufacturer stated that they extended a warranty, but would not pay for the repair. The failure mileage was 100,600.
Oil cooling hose ruptured while driving the car at approx. 60 mph on the highway. Black smoke began to pour out the back of the car. Oil sprayed over the engine and underside of the car and rendered the car undrivable. Damage also sustained to the drive belt tensioner system.