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Vehicle speed controlPart report

2009 Lexus IS Vehicle speed control Problems

Complaints
10about this part
Share
25%of 40 total for the year
Median mileage
10,750miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 10 complaints about the vehicle speed control of the 2009 Lexus IS, 25% of the 40 complaints for this model year. Where a mileage was given, the median is 10,750 miles. 3 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“At approximately 85k total miles, is250 automatic began dropping from 5-6k RPM to 2-3k RPM whenever changing road grade to an incline or decline, usually above 50 MPH, dropping to 35 MPH on the highway. To maintain proper speed, I would have to downshift from d to s and floor the accelerator. Traction control, parking brake, and ABS lights would sometimes coincide with this problem. This continued until I sold the is250 at 88k miles.”

NHTSA complaint #11414566, filed 2021-04, 85,000 miles

“This was a loaner car. The gas pedal stuck on the floor. The heavy rubber mat caught the edge of the gas pedal and held it down on the floor. I was able to shift to neutral (don't know how the engine didn't blow up), brake the car to a stop, shift to park and shut engine off. I saw this morning on tv that there have been fatalities reported on toyota vehicles related to this issue.”

NHTSA complaint #10284260, filed 2009-09, 14,000 miles

“Four incidents of unintended acceleration. On four occasions the 2000 Lexus is250 I purchased on september 3, 2009 had unintended acceleration of up to 5000 RPM.. Three times this occurred when starting the car in park; the fourth time was when the car was stopped and idling. Twice I had the dealer, thousand oaks, ca Lexus, examine the problem and was told no defect could be found. On the fourth occurrence I noticed my foot was on the edge of the brake pedal and depressing the accelerator simultaneously. …”

NHTSA complaint #10292715, filed 2009-11, 900 miles

“Mar. 3/4/10 - as I was pulling into a parking space, my 2009 is250 accelerated and lunged with a high pitched screaming noise. I stepped hard on the brakes but it wouldn't stop it. A large pickup truck was parked with his rear bumper in front of me and it stopped the car. Shaken up, I drove home slowly, called Lexus to tow my car in to check it out. Next day Lexus said they couldn't find anything wrong. I was offered phone # of Lexus corp. Office to file my complaint. I called and they took my statement and said we'd hear from them. On 3/25/10, corp. …”

NHTSA complaint #10324839, filed 2010-04, 1,458 miles

“Rapid acceleration, 2009, IS 250, Lexus. Pulling into a parking space with the foot on the brake. Car accelerated, jumped a curb, over a 6 foot wide grass separation and totaled a parked car in front of the parking space. Car was serviced that very day for it's 5,000 mile check. First time we drove the car after being serviced. Had our car repaired for front end damage. Contacted Lexus on their hot line, reported the incident, was instructed to write them with all the details. Have not heard one thing from Lexus corporate since we sent the letter on 12/30/09 no one has checked the car. …”

NHTSA complaint #10303814, filed 2010-02, 4,800 miles

Related recalls

Related service bulletins

Vehicle speed control: other model years

YearComplaintsShare of year
2012211%
2010615%
20091025%
200844%
200711%
200621%
200518%

Other parts of the 2009 Lexus IS

Other or unknown
10 complaints
Visibility (wipers, defrost, mirrors)
7 complaints
Air bags
4 complaints
Body and structure
4 complaints
Electrical system
3 complaints
Engine
3 complaints
Exterior lighting
3 complaints
Brakes
2 complaints
Equipment
2 complaints
Electronic stability control
1 complaints
Fuel system
1 complaints
Seats
1 complaints

← All problems reported for the 2009 Lexus IS

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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