Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
28,063 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.

2004 Toyota Sienna transmission problems

transmission problem

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2004 Toyota Sienna Owner Comments (Page 3 of 3)

« Read the previous 20 complaints

problem #2

Nov 282003

Sienna 6-cyl

  • Automatic transmission
  • 1,000 miles


2004, Toyota Sienna xle limited. Very sluggish throttle response when cruising, apparently due to very sluggish automatic transmission down shift. No problem when accelerating from a stop. Problem is bad enough to cause an accident when the driver expects reasonable throttle response to avoid a collision, such as crossing an intersection.

- Phoenix, AZ, USA

problem #1

Sep 022003


  • miles
While driving automatic transmission did not shift properly from the "lower to higher gear. Dealer has inspected vehicle and stated it was running under Toyota specifications.

- Coral Springs, FL, USA

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