Three problems related to battery dead have been reported for the 2011 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Toyota Sienna based on all problems reported for the 2011 Sienna.
Takata recall. The contact owns a 2011 Toyota Sienna. The contact received notification of NHTSA campaign number: 16v340000 (air bags). The part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The vehicle was taken to summit Toyota of akron (1535 vernon odom blvd, akron, OH 44320) in July of 2016 who stated that they would hold the vehicle and provide a loaner. The repair would take three months. In July of 2017, the dealer stated that parts were available, but the recall repair could not be performed because the brakes were rusted and the battery failed. The dealer stated that the failures occurred due to the vehicle being left parked outside the dealer without being moved for an extended period of time. The dealer refused to assist with the repairs. The vehicle was not repaired. The manufacturer was not made aware of the issue. The failure mileage was unknown.
The contact owns 2011 Toyota Sienna. The contact stated that while driving 70 mph, the engine stalled without warning. The vehicle was towed to the dealer, who performed a diagnostic and determined that the battery failed and caused the vehicle to stall. The battery was replaced however the dealer could not explain the cause of the battery failure. Additionally, the contact stated that the engine was previously replaced due to failed springs which caused the valves to also fail. The manufacturer was made aware of the failure. The failure mileage was 31,312 and the current mileage was, 31,800.
In the morning car did not start, battery was dead. I charged battery overnight . After 2 hr of driving ( 120 miles) car was parked for 2 hr , when I tried to start it battery is dead again ( had to jump start it) after driving ~ 7 miles I parked car and battery was disconnected. After 4 hr I connected again and no problem with starting. Dealer (schaumburg Toyota) kept my car for 3 days . They replaced sliding door switch and integration relay . They told me that everything is fixed . I parked car in garage and in the morning I could not start it again . Had to go back to dealer . Car is still at the dealership lets hope they will fix this problem this time.