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Other or unknownPart report

1999 Toyota Sienna Other or unknown Problems

Complaints
16about this part
Share
7%of 215 total for the year
Median mileage
122,000miles
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

NHTSA recorded 16 complaints about the other or unknown of the 1999 Toyota Sienna, 7% of the 215 complaints for this model year. Where a mileage was given, the median is 122,000 miles.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I am reporting another Toyota sticky accelerator pedal. Our 1999 Sienna minivan has had 3 incidents of stuck accelerator, the most recent was jan. 21, 2010. I believe it has become stuck between 40 and 45mph. Other incidents were in summer (cannot remember date) and october 2009. The 1st incident was brief and corrected quickly by pushing down on the pedal to free it , the 2nd incident required braking and putting the car in neutral and shoving the pedal with my foot to the left and right to free it up. …”

NHTSA complaint #10302973, filed 2010-01, 122,000 miles

“I want to report a scary incident occurred yesterday with my minivan. On 2/11/2011, at about 7 am, I started by Toyota Sienna to send my son to his high school, I heard strange noise. It sounds like not all the cylinders were runnung. The car was not powerful as usual. I tried to turn off my van, by turning the key to stop and taking key out. The can did not stop. I inserted the key to start again, it still had the noise. I drove my son to his high school any, which is less than a mile away. After dropping him off at the school, I drove back to home. …”

NHTSA complaint #10381692, filed 2011-02, 110,500 miles

“The van has sudden acceleration problem at times it is hard to slow it down even stop it. The problem mainly occurs from stop and go especially if it has been parked for few hours.”

NHTSA complaint #11383773, filed 2020-12, 173,000 miles

“All the above data is an estimate becuase we are waiting for copies of all maintenance and repair records from Toyota - - but we have had multiple problems with this vehicle including screeching brakes, left veer when driving, bad transmission (replaced twice),smog check failure due to oxygen sensor and/or engine problems, clunking noises in engine, a shuddering of vehicle when driving or braking. The car has been at dealers for as long as 3 weeks; dealer admits not knowing what is wrong. Failed”

NHTSA complaint #10068983, filed 2004-01

“When I noticed that the horn did not work, I went to my nearest Toyota service agency. However, they told me that the horn was functional and that the problem was a wear in the system. This worn out part is supposedly between the rod of the wheel and the horn, which no longer makes the proper connection. And yet, this connection is suitably rendered from this worn out part when the steering wheel is completely turned to either side. They estimated a $1000 charge to fix this matter. Their conclusion was based on the fact that this issue could not be simply replaced. …”

NHTSA complaint #10129809, filed 2005-07

Other or unknown: other model years

YearComplaintsShare of year
2022119%
20212918%
2020616%
2019920%
20181419%
20172717%
20161418%
20154821%
20142817%
20133318%
20122811%
20116410%
20102716%
20093718%
2008389%
2007349%
2006596%
2005585%
20041075%
200322%
200232%
200184%
2000134%
1999167%
199862%

Other parts of the 1999 Toyota Sienna

Engine cooling
39 complaints
Body and structure
36 complaints
Tires
28 complaints
Steering
21 complaints
Latches, locks and linkages
19 complaints
Brakes
15 complaints
Suspension
14 complaints
Transmission and drivetrain
11 complaints
Electrical system
10 complaints
Air bags
7 complaints
Fuel system
6 complaints
Seat belts
6 complaints

← All problems reported for the 1999 Toyota Sienna

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology