2009 Toyota Prius: adaptive cruise control problems

5 of the 502 complaints about the 2009 Toyota Prius describe adaptive cruise control problems.

owner complaints: 5
of this car's complaints: 1%
typical mileage: 7,000
recalls: 0

Is there a fix? 1 service bulletin covers this area of the car. See below

Adaptive cruise control problems by model year

2025
2
2022
2
2021
1
2020
1
2017
4
2016
5
2015
3
2014
4
2013
4
2012
2
2011
5
2010
50
2009
5
2008
20
2007
22
2006
19
2005
18
2004
6
2003
2
2002
2
2001
2

What owners say

Filed Mar 11, 2010 · Acceleration · 10,000 miles · DC

While in 'cruise control' with no use of the gas pedal, the car started to increase speed beyond the set speed. When I realized what was happening, I stepped on the brake which overrode speed control and began slowing down as it normally would if the car was not accelerating but at steady speed, note: date below is approximate. Event happened twice during summer of 2009 at high speed (setting at 70mph).

Filed Mar 10, 2010 · Acceleration · 6,200 miles · FL

Tl*the contact owns a 2009 toyota prius. While driving 70 MPH with the cruise control engaged the contact applied the brakes and noticed that the cruise control would not disengage.the contact had to apply the brakes three times in order for the cruise control to disengage. The manufacturer was called and informed the contact to take the vehicle to the dealership. The contact stated that the failure with the cruise control was directly related to the sudden acceleration with his toyota vehicle. The current and failure mileages were 6,200.

Filed Mar 3, 2010 · Acceleration · 9,350 miles · OH · crash

1. After turning off cruise control, vehicle accelerated on its own up to 95m.p.h. Until I was finally able to get it stopped by pressing the brakes to the floor. After getting the vehicle pulled over to the side of the interstate, there was a lot of smoke coming from the front brake pads. I restarted the vehicle in an attempt to get it off the interstate for further inspection. As I exited the highway, I turned the vehicle onto the off ramp but the vehicle did not turn and drove us directly into the guard rail. I contacted toyota and they have denied there was anything wrong with the vehicle and dismissed my complaint.

Filed Feb 12, 2010 · Acceleration · 4,000 miles · MN

I have a 2009 prius and on at least 4 occasions in cruise control my car has accelerated without my doing so. All of the times I was able to brake and bring down my speed. We tried to report this to toyota but they were not concerned. We then reported this to the dealership and the mechanic told my husband that " that sometimes happens". No report was filed or action taken.

Filed Dec 4, 2009 · Transmission · 7,000 miles · WI

Tl*the contact owns a 2009 toyota prius. While driving approximately 55 MPH on normal road conditions. The cruise control selector was activated. The driver's hand slightly hit the gear shifter in which the shifter moved out of gear. The contact had concern of the safety risk regarding the poor manufacturer design. Immediately, the gear shifter was moved into the proper gear. The failure mileage was 7,000. The current mileage was 8,000.