2007 Toyota Sienna transmission problems

Filed Jun 25, 2026 · Engine, Transmission · 170,000 miles · NC

The contact owns a 2007 Toyota Sienna. While the contact’s wife was pulling into the parking space, the transmission shifter was shifted into park(P), and the vehicle suddenly rolled forward approximately four feet. The parking brake was activated, preventing the vehicle from crashing into a parked vehicle. The vehicle was towed to the residence. While examining the vehicle, the contact determined that the shifter cable bushing had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. Additionally, previously while driving there was smoke coming from the engine compartment and the vehicle stalled. The vehicle was towed to the local mechanic who diagnosed the vehicle and determined that the oil cooler line had failed causing engine oil to spill from the engine. The rubber oil cooler line was replaced with an updated improved oil cooler line, and the vehicle was repaired. The failure mileage was 170,000.

Filed Mar 31, 2023 · Engine, Transmission · OH

As a result of the transmission cooler being a part of the radiator system, the transmission cooler ruptured while driving causing immediate loss of power and the engine to overheat. This malfunction also caused coolant and transmission oil to contaminate the engine compartment as well as the transmission. This is a major iengineering flaw and safety issue as I was on the interstate when it happened and was stranded on the side of the highway until help could be obtained.

Filed Sep 22, 2020 · Engine, Transmission · 126,300 miles · MI

Tl* the contact owns a 2007 toyota sienna. The contact stated while stopped at traffic light, the vehicle stalled with the brake pedal depressed. Several warning lights illuminated on the instrument panel. The contact shifted the vehicle into neutral and coasted into a driveway. Upon inspection, the contact discovered that there was no oil in the engine. The contact refilled the oil however, the oil immediately leaked out the vehicle. A mechanic arrived on scene and replaced an oil hose. After the hose was replaced, the contact heard an abnormal knocking noise in the engine. The contact took the vehicle to several independent mechanics and was informed that the engine failed and needed to be replaced. The contact had the vehicle towed to suburban toyota of farmington hills (25000 haggerty rd, farmington hills, mi 48335) who confirmed there was an engine failure. The contact then had the vehicle towed to an independent mechanic where the engine was replaced. After the engine replacement, the contact experienced several transmission issues. The contact stated that while at a stop, the vehicle independently shifted in and out of gear without warning. Also, while in reverse, the vehicle coasted and jerked upon slight depression of the accelerator pedal. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 126,300.*dt

Filed Aug 3, 2020 · Engine, Transmission · 120,850 miles · TX

Driving 55mph on frwy, van started smoking in the rear and oil on back of van. Slowly drove short distance home and lights on dash came on upon arriving home. Oil leaked on street where we parked. Had mobile mechanic look at it. Oil cooler hose had burst. He replaced it, we drove the van 50 miles on short trips.when on frwy, it happened again about 3 wks later. Had towed home. Same hose busted again. Looked on internet sites & found same problem has occurred to many people with same van year. Longterm ongoing problem. Called tejas toyota in humble, tx and svc mgr said toyota offered an extended warranty (knew there was a problem), but it ended at 100,000 miles/10yrs (we have 120, 900) and is 2007 van. We've already had it towed and fixed twice. We're recovering from near death/covid afraid to drive it since we can't trust it. Based on internet stories by others with same problem, & svc mgr at toyota opinion, fear is warranted. Our van was repaired 2x w/ same type of inferior hose put on van when built by a mechanic not at toyota. None of us realized inferior part was the problem.now we need to repair it again with a "kit" that toyota specifically made because this is known problem after we spent many 100s of $s repairing it using same type part when built. Wouldn't fix it when I called in 2015. It had to break 1st per toyota when I checked on it in 2015 when got notice.toyota should repair it at no cost & reimburse me for the expenses I've already had. My husband had covid and almost died and it happened the day after he was released from a month long covid hospital stay and again when I was taking him to therapy for covid 3 wks later. We could have had a accident, been injured, when the van stops with no notice or warning lights.toyota corp. Takes no responsibility.it's our problem,not theirs. Can't drive van. Will happen again w/out warning. Help please!!!

Filed Feb 22, 2018 · Transmission · 53,000 miles · NC

Tl* the contact owns a 2007 toyota sienna. While driving at an unknown speed, the vehicle began to jerk and the transmission hesitated. The vehicle was taken to an independent mechanic where it was diagnosed that the transmission failed. The dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure and stated that the vehicle was out of warranty. The failure mileage was 53,000.

Filed Aug 18, 2017 · Transmission · 121,427 miles · ID

At my 120,000 service, the toyota dealer technician reported a leaking front differential. He said it would take 16 hours to repair. The technician also mentioned that he had 3 toyota cars currently in the shop for the same thing. This seems beyond coincidental. Clearly, toyota has a problem with leaking seals. The difficulty to fix this problem translated into a bill of $1,404.60 plus $31.79 for a rental car. The bill may have been more: the car's rack and pinion was also leaking, so some of the labor was shared with that job. This amount seems extreme and either toyota has faulty seals or, if this is a "normal" wear and tear item at 120,000 miles, toyota has made it way too difficult to fix. Either way, this amount of expense is inordinate.

Filed May 15, 2017 · Transmission · 122,000 miles · PA · crash

Vehicle was parked on slight incline in driveway (not running). Key was in ignition, but vehicle was not running and it was in the off position. Four year old child shifted vehicle out of park into neutral causing it to roll down a hill and impact several trees (no injuries). After the incident, we have found that the vehicle can occasionally be easily shifted out of park with no key in the ignition and without applying pressure to the brake pedal. Most of the time it functions as it supposed to (and won't let you take it out of park).

Filed Jul 26, 2016 · Transmission · 158,000 miles · CA

I was driving my husband to work, when we pulled into his work, all of a sudden I had smoke coming from under my hood. We shut the vehicle off, I had oil everywhere. We couldn't tell where the leak was. I had the vehicle towed home and then to elk grove toyota. Well it turns out that the oil cooler line broke. This is a design flaw in 2007 to 2010 toyota sienna's. There are technicial service bulletins but no recalls. I had to rent a vehicle before I could even get it to a dealership. That bill was $365. This is my only vehicle. The first time ever buying a toyota. I researched for 4 months before I bought this vehicle.

Filed Feb 8, 2016 · Transmission · 60,400 miles · NJ

Transmission had been hesitating at times, but mechanic couldn't find any problems. At 60,400 miles, the transmission died completely and we were stranded far from home. This occurred on a well-maintained vehicle. Because it was over the 60 months/60,000 miles warranty, toyota offered no assistance. Between towing and replacing transmission, it cost us $5900. Even the mechanic was surprised by the failure at such low mileage, as toyota sienna is what he normally recommended to his customers looking for a reliable family vehicle. We were lucky no one in our family was injured, but we are extremely disappointed with toyota not standing by its product. In hindsight, I wish we had purchased the honda odyssey.

Filed Jan 28, 2016 · Transmission · 65,987 miles · CA

Car started having problems approx 55,000 miles, left me stranded on the side of the road twice. First time check engine light came on and started to stall. Pulled off freeway, checked manual and it referenced electronic throttle control, shut off the car and restarted and was able to get on the road. Check engine light came on again, checked code ignition coils, had to replace #6. Another instance, car started to stall, check engine light flashed at me, pulled off the road. Was able to take it to dealer in which they stated they couldn't find a problem. Now within days my car's transmission completely went out, current millage 65, 987. Toyota will no absolutely nothing to assist because its "out of warranty". Absolutely unacceptable.