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Vehicle speed controlPart report

2015 Lexus RX350 Vehicle speed control Problems

Complaints
7about this part
Share
17%of 42 total for the year
Median mileage
16,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the vehicle speed control of the 2015 Lexus RX350, 17% of the 42 complaints for this model year. Where a mileage was given, the median is 16,000 miles. 3 of these say a crash was involved, according to the filers.

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.

“Dynamic speed control randomly (twice) has lost settings & control. Setting it at 60, car increased speed to 85, and ignored car in front of me, almost causing a crash. Lexus has not followed up with me on this. Voice recognition often functions incorrectly resulting in distracted driving, and has almost resulted in me driving out of my lane or off the road several times. Example: ask it for directions to palo alto medical foundation: result; gives me a list of south american restaurants. Contacted Lexus about this. Only response - take it to a dealer. I have an appt with one july 11. …”

NHTSA complaint #10876275, filed 2016-06, 5,600 miles

“The contact called on behalf of his spouse who owns a 2015 Lexus RX350. While attempting to park the vehicle, it accelerated independently and crashed into a light pole and two parked vehicles. There were no injuries sustained. A police report was filed. The vehicle was not taken to be diagnosed or repaired. A dealer was not contacted. The manufacturer was notified of the failure. The approximate failure mileage was 38,000.”

NHTSA complaint #11102764, filed 2018-06, 38,000 miles

“The contact owns a 2015 Lexus RX350. The contact stated that while driving at various speeds, the vehicle would hesitate to accelerate when pressing the accelerator pedal and on several occasions the odor of fuel was present inside the vehicle. The vehicle was taken to the local dealer Lexus of chattanooga (5800 lee hwy chattanooga tn) however the mechanic was unable to duplicate the failure. The manufacturer was not notified of the failure. The failure mileage was 3,000.”

NHTSA complaint #11299690, filed 2020-01, 3,000 miles

“The contact owns a 2015 Lexus RX350. The contact stated that while stationary, the vehicle accelerated without warning and crashed into the rear end of another vehicle. The contact shut the vehicle off immediately. The air bags failed to deploy. There was no medical attention required. There was no police report filed. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 20,000.”

NHTSA complaint #10871039, filed 2016-05, 20,000 miles

“The contact owns a 2015 Lexus RX350. While making a left turn, the contact crashed into the front driver side of another vehicle. The vehicle accelerated extremely fast. The brake pedal was depressed, but failed to stop the vehicle. The contact had to shift the vehicle into the park position in order for the vehicle to stop. The air bags did not deploy. A police report was filed and there were no injuries reported. The vehicle was towed to a dealer where it was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 5,000. …”

NHTSA complaint #10850385, filed 2016-03, 5,000 miles

Related service bulletins

Vehicle speed control: other model years

YearComplaintsShare of year
2019413%
2018317%
2017613%
201659%
2015717%
2013915%
20121030%
2011827%
20103840%
200966%
20081512%
20072213%

Other parts of the 2015 Lexus RX350

Other or unknown
10 complaints
Engine
9 complaints
Fuel system
7 complaints
Air bags
5 complaints
Body and structure
4 complaints
Electrical system
3 complaints
Brakes
2 complaints
Seat belts
2 complaints
Transmission and drivetrain
2 complaints
Visibility (wipers, defrost, mirrors)
2 complaints
Electronic stability control
1 complaints
Seats
1 complaints

← All problems reported for the 2015 Lexus RX350

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