CarComplaints.com Notes: Toyota says the 2015 Sienna has been redesigned with "more swagger." Let's hope it's also been redesigned with less seat noise.

4.4

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
25,340 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.

2015 Toyota Sienna drivetrain problems

drivetrain problem

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2015 Toyota Sienna Owner Comments

problem #6

Aug 232021

Sienna

  • miles

A D V E R T I S E M E N T S

I have a 2015 Toyota Sienna LE that I purchased new from the dealer. The original Michelin tires had excessive wear after less than 2yrs and ~28K miles. I replaced these with Continental tires(rated for 70K miles) and after 2years and at ~63K on the vehicle miles I had to replace those with General Altimax (rated for 75K miles). Each time tires were replaced it received and alignment. I now need to replace the third set of tires at ~88k for set number four. Additionally I had to replace the Rank and Pinion (Complete unit), both tie rods and both suspension control arms and ball joint assembly and a wheel alignment. Can is adult driven mostly in town but has one long road trip on it (6K miles). This will be the fourth set of tires on a vehicle with less than 100K miles along with 5-6 alignments. All tires have been maintained and rotated. This has to be a vehicle defect as I have multiple tire manufactures, all rated for more than double the tire life I'm getting. I have $2000 in tires so far (not counting the originals) $1250 in replacing the front end components noted and now have to spend another $1k on tires.

- Saint Petersburg, FL, USA

problem #5

Oct 092019

Sienna

  • 48,000 miles
My Sienna van sometimes responds very late to acceleration. This becomes a problem on highways specifically during the merging. Acceleration paddle has to be pressed very hard, for first few seconds there is no response from engine then latter it suddenly accelerates. This makes you miss judge the time required to merge on highways and can cause accidents. This has been happening since few months. I am providing tentative date below.

- Lowell, MA, USA

problem #4

Feb 042019

Sienna

  • 72,043 miles
The contact owns a 2015 Toyota Sienna. After the contact placed the gear in park, she could not shift out of the park position. The contact shut off the vehicle and it would not restart. In addition, the brake override malfunction indicator illuminated and "visit your dealer" appeared on the instrument panel. The vehicle was towed to poway Toyota (13631 poway rd, poway, ca 92064, (858) 486-2900) to be diagnosed, but the results were pending. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 72,043.

- Ramona, CA, USA

problem #3

Jan 022015

Sienna

  • 7,000 miles

A D V E R T I S E M E N T S

I have a 2015 Toyota Sienna xle with 35,800 miles. - (no specific conditions or driving styles) it is on it's third transmission (second replacement was at 29,800 miles) - newest recall on the side doors opening randomly. - (no specific conditions or driving styles. Happens completely randomly) cruise control lever light flickering. It was replaced three times now. It was just replaced the third time recently, so I'll see if it happens again. - (no specific conditions or driving styles. Happens completely randomly) dash randomly freezes for about 5 minutes and then resets to the default settings (it has happened seven times and continuing) and Toyota still cannot figure out the problem. - (while driving on a clear day on a city street) climate control shut off completely by itself without touching any buttons while driving. I was able to turn it back on, but it should not shut off without any action. - bad support bearing for axle on front passenger side (22,900 miles)

- Bristol, IN, USA

problem #2

Dec 012016

Sienna

  • 18,000 miles
When ambient temp is below freezing and vehicle is cold the engine revs up from below 1000 RPM to nearly 1500 RPM when coming to a stop and the vehicle wants to lurch forward. I must be on the brake to prevent lurching forward. It revs up as the transmission is downshifting. Dealer says it is normal. This is nonsense.

- Canton, MI, USA

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problem #1

Jan 302016

Sienna

  • 7,000 miles
The contact owns a 2015 Toyota Sienna. The contact stated that the vehicle was not driving normally and it felt as if the transmission were failing. The vehicle was taken to the dealer where it was diagnosed that the transmission failed due to a minor crash in which the contact was involved. The transmission would need to be replaced. The vehicle was repaired. The manufacturer was informed of the failure. The approximate failure mileage was 7,000. The VIN was not available.

- Spring Valley, NY, USA

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