really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
106,462 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Toyota Sienna drivetrain problems

drivetrain problem

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2006 Toyota Sienna Owner Comments

problem #16

Nov 012016


  • 161,000 miles


Currently there is a recall out for the shift lock solenoid assembly in certain Toyota Sienna van models from 2004-2005 and 2007 to 2009. I own a 2005 Sienna le and have no problem with my shift lock solenoid. However, I have a 2006 Sienna le and upon shutting off the car after driving, I can move the automatic transmission selector out of park when the key is out of the ignition and the brake pedal is not depressed. This condition can happen 50 percent of the time and is quite reproducible on my van. I will be contacting Toyota usa today, but I thought it pertinent that your Agency is aware of the problem as well. I have 3 small children, 2 of whom could easily take the car out of gear from a parked position. Thank you.

- Fort Collins, CO, USA

problem #15

Aug 202016


  • 163,064 miles
On August 20th, 2016 my Toyota Sienna 2006 experienced a failure of the anti-sway controls which resulted in sudden deceleration and severe damage to the power steering, as well as the suspension system. This incident occurred while decelerating into a turn. Attached is a narrative description of the incident and the estimate provided by the servicing dealership to repair.

- Davis, CA, USA

problem #14

Jun 202016


  • miles
The contact owns a 2006 Toyota Sienna. While attempting to change gears, the shift lever became inoperable without warning. The vehicle was taken to a dealer where it was diagnosed that the shifter cable failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was not available.

- Okatie, SC, USA

problem #13

Jul 252015


  • 121,000 miles


The contact owns a 2006 Toyota Sienna. The contact stated that while parked, the shift lever failed to shift out of the park position unless the brake pedal was depressed. The anti- brake system warning light illuminated. The failure recurred intermittently. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 121,000.

- Poughkeepsie, NY, USA

problem #12

May 312015


  • 185,000 miles
I was traveling at 65mph on interstate 90 East. The car while driving when I was giving gas it didnt run forward and it just stopped on the middle of the road with my kids in it. I took it to the dealer and dealer told me that the radiator pipe got corroded so the cooling oil from the transmission didnt flow properly and the transmission failed during the car running.the Toyota has safety recall of excessive corrosion for the spare tire then same thing applies as the corrosion part is underneath of the engine.

- Oshkosh, WI, USA

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problem #11

Mar 242015

Sienna 6-cyl

  • 71,274 miles
All four alloy wheels on this vehicle have the paint bubbling and chipping off leaving the wheel exterior exposed to weather and further corrosion. Underneath the chipped paint the alloy is corroding, potentially compromising the strength and overall integraty of the wheels. I have experienced air loss in both front tires over the course of just a few days. My local tire shop checked both front tires for punctures but found nothing. They then removed the tires from the rims and indicated the rims had corroded around the outer diameter of the rim where the tire bead is supposed to seal. They cleaned the corrosion from the rim interior and applied a bead sealing compound that fills in the corroded and pitted bead area of the rim allowing the tire bead to seal and hold air. When it comes time to rotate the tires the tech person indicated that I should also have them seal the tires placed on the front of the vehicle as they would probably start loosing air as well with the added weight of the front wheel drive engine and transmission. This seems to be a common issue with this year model of the Toyota Sienna. Thus far, Toyota will not do anything to correct this issue which seems to me to be a serious safety hazard.

- Olathe, KS, USA

problem #10

Nov 272014

Sienna 6-cyl

  • 169,600 miles


Will driving I came to a stop sign and proceeded to slow down but the car continued to rev a high rate and lunged forward into the four way cross before finally coming to a stop.

- Riverside, CA, USA

problem #9

May 232014

Sienna 6-cyl

  • 133,295 miles
At first, I have the tire pressure indicator light continuing to lit up. Then one morning, the van was slow to response to shifting gear and acceleration. After stopping, it won't start and move into gear at all. There was no engine light being lit or warning sign. Towed to shore Toyota at mays landing, NJ. They told me that the transmission oil had all leaked out due to the burst of abrupt failure on the inlet to the radiator. They asked me to replace the radiator at a cost of $1,150.26! after repaired, they then told me that the transmission is bad and difficult to move into gear. They quoted another $3,780 to replace the transmission. I was furious. Since that the dealer told me that the van can be driven. I was prepared to trade it in and weighing my options. The van has 133,279 miles. I drove it ok initially, however, I experienced that it was difficult to accelerate twice. After 15 miles when I stopped at a traffic light, the van just stuck- it cannot move in any of the gears at all. I towed back home. After cooling down, it was able to drive again. The new transmission fluid smelled burnt. I am wondering why: "why the engine light was not lit up at all when the coolant temperature was so high before spoiling the whole transmission? ?why was that not even any dtc codes stored on the obdii systems at all after all these defects? ?this seemed the same problem as the sticky transmission that other customers have been complaining about, yet Toyota has not informing the customer of any actions need to be take. I have been receiving notices about the various recalls and the potential of monetary compensation, however, nothing has been realized yet. "this seemed to be a very dangerous situations, if the van can be slowed down or stopped so drastically, the people in the vehicle could be bumped over.

- Hammonton, NJ, USA

problem #8

Aug 072013

Sienna 6-cyl

  • 118,000 miles
The contact owns a 2006 Toyota Sienna. The contact stated that while driving 40 mph, the vehicle stalled. The vehicle was towed to an independent mechanic where the technician diagnosed that the transmission needed to be replaced. The vehicle was repaired but the failure recurred. The vehicle was taken back to the dealer. The technician diagnosed that the ECM needed to be replaced. The manufacturer was made aware of the failure. The vehicle was repaired. The failure mileage was 118,000 and the current mileage was 119,000. Updated 06/10/14

- Harpers Ferry, WV, USA

problem #7

Jun 142013

Sienna 6-cyl

  • 171,000 miles
The car was in park in the driveway with the engine running. Without putting the car in drive, the car rolled forward after I exited the vehicle. I quickly turned to get back in the car to stop the vehicle, as it was rolling towards my other car in the driveway. In doing so, I suffered a knee injury, fell to the ground I injured my knee and was unable to stop the vehicle before it made contact with my other car. The injury to my knee was significant, required surgery, and I have still not returned to work.

- Coronado, CA, USA

problem #6

May 132009

Sienna 6-cyl

  • 42,000 miles


The dash start cracking up for no apparent reason and the car is mostly park inside a garage day and night. I have called dealers and nothing has been done so far and I have been told that's a manufacturer defect and it should be corrected by dealer. The transmission some times does not change the gears and others stop to work and I could cause a rear end collision.

- Aguadilla, PR, USA

problem #5

Dec 312012


  • 75,800 miles
I have a 2006 Toyota Sienna le with automatic transmission that is currently at 76256 miles. I had bought it new. (delivery date 1-Jan-2007) on 20-Dec-2012, at 75800 miles, I noticed a whirring sound (like a turbo whine) when I lifted my foot off the gas (no load) around 45 mph. The grinding/whirring noise would be most apparent between 25 mph to 45 mph. I took it to my nearest Toyota dealership on 31-Dec-2012 for checkup ( 76257 miles at the time) and they diagnosed that the transmission was going bad and will need to be replaced. The exact diagnosis was that the "side carrier bearing inside of the differential is making the noise. Need new transmission - $5700". the estimated cost is $5700 this looks like a design flaw in the transmission, I am the original owner and have driven the van with lot of care. It is unacceptable that the Toyota transmission would start to fail at less that 76000 miles. I had bought a Toyota van assuming that their vehicles are reliable. I believe there are many 2006 Toyota Siennas on the road that will start having this problem. This can cause a hazardous situation if the transmission fails on a highway causing an accident. Toyota should provide extended warranty for the Sienna transmission just like they did for rav4 2001-2003 model when they extended that warranty to 10 years or 150,000 miles.

- Naples, FL, USA

problem #4

Aug 242011


  • 72,000 miles
I was driving approximate 25-30 mph on a dry, level street. A car stopped in front of me to make a left hand turn. I applied the brakes and nothing happened. I released and reapplied the brakes again and again no response. I was able to swerve to the right into an empty parking lot to avoid hitting the car or another collision. After swerving and reapplying the brakes a 3rd or 4th time I was able to come to a stop. My kids and I were severely shaken, but not injured. We decided this problem was due to the master cylinder. We replaced it and have had 3 more incidents since replacing the master cylinder. 1 was in reverse leaving my drive way. I wound up hitting and embankment across the street to stop me. This was a slight down hill roll in reverse. I went from parked to out of control. I never touched the accelerator and hit the brake multiple times and even tried shifting back into park (knowing that's bad for the transmission), nothing worked. After getting stopped and pulling forward everything seemed normal again. My husband was driving in traffic and we were approaching a turn and had to merge in to perpendicular traffic. Approx speed 25-35 mph. The brakes again completely failed and we had to swerve through a traffic light in to a free lane of traffic to avoid a rear end collision with the cars infront of us. We ordered another master cylinder and were preparing to install it. Today the brakes failed again at a stop sign (approx speed 5-10 mph) I had been stopped and started to ease in to the main road when I saw a car coming from the left.

- Arkadelphia, AR, USA

problem #3

Jul 042010


  • 45,000 miles
Driver upon shifting from neutral into drive, car accelerated at top speed, eventually colliding with an earthen embankment 80 yards beyond the exit from a car wash structure. Accelerator pedal was not pressed at anytime. Brakes were ineffective. No floor mats., experienced adult male driver with no history of accidents. No passengers. Car was totaled from collision. No injuries, driver avoided hitting a number of parked cars, by steering around them. Accident occurred at 10 am as driver emerged from a car wash structure. Driver not ticketed. Car was inspected by Toyota and deemed in perfect mechanical condition and that Toyota was not responsible. Driver's insurance company provided coverage.

- Cincinnati, OH, USA

problem #2

Jun 042010

Sienna 6-cyl

  • 48,000 miles
Topic: Toyota acceleration problem: On July 4th at 10:00 am, as my 2006 Sienna Toyota was emerging from the dryer-end of well known carwash, the signal at the terminal point indicated that I was to move my car out of the structure. I shifted out of neutral into drive. At the instant I put the car into drive, my vehicle accelerated out of the car wash structure, missing about 12 vehicles and drivers in the parked area drying their cars. The police and witness said I reach 60 mph when I hit an embankment, directly across from the exit to the carwash property at the exit point, the embankment was across the busy street leading out of the carwash area. I turned slightly to the left, in a vain hope to slow my vehicle down; tearing off the front right side and wheel, the vehicle continued on, sliding down onto a busy road. In trying to avoid a busy intersection, I pulled up over the embankment at a lower grade on to a flat grassy area where I could take my right hand off the wheel and pull the gear shift into neutral and turn off ignition. Thank god no one was hurt. The vehicle was inspected by Toyota subcontractors and is being repaired to be returned to us. It will be impossible for me to allow my family or anyone for that matter to drive that car in the future, the car is worth more to us than to others. The tone of the inspectors and other contacts with the Toyota company was one of skepticism. I did not have floor mats in the car and I know the difference and location of my brake, contrary to their suggestions. I think it is interesting that the customer service and inspectors continue to treat their loyal car owners with such disdain and disbelief as if we are all liars. It is strange that the complaints are only coming from Toyota owners, but as one reporter noted Toyota drivers are an aging group and it has not happened to Scion drivers. I hope that this problem is taken seriously by Toyota.

- Cincinnati, OH, USA

problem #1

May 072010


  • 127,358 miles
I was driving on a straight, level dry road with cruise control set at 58mph. Suddenly car began to downshift. Assuming transmission problem I disengaged cruise control and car almost came to a stop. I pushed gas pedal and drove in low gear to nearest pull-off. Discovered left front brake was smoking. After things cooled off I drove car in low gear about 6 miles to local service station. Mechanic found all brakes locked and removed all wheels. He inspected all rotors, calipers brake lines, etc and found no problems. (I had new brakes installed at dealership about 4 months earlier.) when mechanic manipulated left front caliper all brakes disengaged. Mechanic found brake fluid level was normal. I've driven car about 500 miles since problem occurred with no problems. I don't use cruise control often - and haven't used it since problem occurred. I'm wondering if problem is with cruise control rather than brakes?? this could have been a disaster if it happened on a freeway at higher speeds!

- Dryden, NY, USA

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