fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
9,750 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 engine problems

engine problem

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2004 Toyota Sienna Owner Comments

problem #4

May 152005

Sienna 6-cyl

  • Automatic transmission
  • 6,000 miles


Referring to our 2004 Toyota Sienna purchased in Aug, 2004, three times, when using the cruise control and engaging the "resume" function, the vehicle accelerated at full throttle and continued doing so past the set speed until stepping on the brake to disengage the cruise control. This resulted in the speed increasing to 5 to 10 miles over the set speed. This is very dangerous and could result in a crash if another vehicle suddenly pulled out in front of my vehicle.

- St. Louis, MO, USA

problem #3

Nov 012004

Sienna 6-cyl

  • Automatic transmission
  • 24,000 miles
Cruise control will not work manually if the laser system is not functioning. Laser system cruise control is broke. You can not turn on the manual cruise control unless you stop the van and turn it off and set the control to noral. The laser was broke from car wash or road haz.ard.

- Guilford, IN, USA

problem #2

Feb 182005

Sienna 6-cyl

  • Automatic transmission
  • 9,000 miles
Laser cruise control sensor lens is road level mounted and a small stone chipped the plastic lens causing system shut down in daylight. System wil not function except in darkness. Repair cost is estimated to be $2000.

- Alsip, IL, USA

problem #1

Sep 162003

(reported on)


  • miles
When cruise control is engaged while driving uphill vehicle runs out of control, brake pedal needs to be depressed to stop vehicle.

- Rochester, NY, USA

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