Toyota 4RUNNER adaptive cruise problems

Filed Jan 13, 2026 · Acceleration, Driver assistance · WA

This had happened a year ago. I was driving and my anti collision brake just started to make a beeping noise and was telling me to call a toyota dealer. And before that the anti collision brake would go off when there was nothing in front of me. A few months later my cruise control and lane assist also stopped working. I took it in for a diagnostic and they couldn't tell me the real problem and that it would be 1500 to actually know what the issue is. I have never been in an accident in this car and its annoying that I bought it because of the safety features that I now cant use.

Filed Feb 4, 2023 · Acceleration, Brakes · NJ · crash · 1 injury

was going to work on rt 80 east had cruise control on and was getting off exit 45 in new jersey to get bus into manhattan at approx 430 amwhile getting off highway stepped on brakes pedal went to floor tried pumping nothing happened nor did criuise control disengage or collision warning come on a total collapse of system had this car for approx 1 month purchased used at paramus mercedes benz took this vehicle to my mechanic for a full inpection everything was good vehicle had approx 22000 miles on it at purchase lost all control and crashed going off roadway and sliding down bridge abuttment car is a total loss rushed to hospital car was hauled off abutment by wrecker company police fire and ambulance showed up had to break sunroof to get me out no one could belive i survived this happened yesterday feb 3 2023 called toyota corporate and they issued me a claim number as well as my insurance comp looking on line this problem seemed to happen to quite a few people can you please address this issue before more people get injured or worse its only by the grace of god that i am writing this to you this vehicle is now in storage at powder mill collision thankyou

Filed Aug 16, 2022 · Acceleration, Brakes · WA

On numerous occasions, while driving in a straight line with our adaptive cruise control on, our 2022 Toyota 4Runner will automatically actuate the vehicle's brakes when approaching a slower or stationary vehicle that is either to the left or right, but not directly in front of our vehicle. This sudden speed reduction has almost caused any following vehicles to almost collide with the back of our 4Runner. It has happened to us at speeds between 30 MPH and 65 MPH. When it happens, one has to quickly tap the brakes to deactivate the adaptive cruise control then get on the accelerator pedal to avoid a collision with any following vehicle. We have taken our 4Runner into two separate Toyota dealerships on three separate occasions to have this problem diagnosed and repaired. The first dealership told us repeatedly that there is no issue. The second dealership pulled data from our vehicle and made an adjustment to the 4Runner's forward camera system. Unfortunately, the day after this adjustment was made our 4Runner irrationally applied the brakes when we were driving 35 MPH on a straight road with no other vehicle in front of us. The problem is not fixed. We are now waiting for a response from Toyota Corporate.

Filed Nov 9, 2021 · Acceleration · 240,000 miles · OH

The contact owns a 2003 Toyota 4Runner. The contact stated while his wife driving 60 MPH with the cruise control activated, the accelerator pedal was depressed, and the vehicle rapidly started to accelerate. The contact stated no warning light was illuminated. The driver depressed the brake pedal to stop the vehicle and parked on the side of the road. The driver was able to restart the vehicle and drive to her destination. The contact stated that in October 2021 his wife experienced a similar failure. The contact also stated that on 11/8/2021 while his wife driving 55 MPH and depressing the accelerator pedal, the vehicle accelerated quickly. The contact stated no warning light was illuminated. The driver depressed on the brake pedal with both feet and shifted gear to neutral to slow the vehicle. The driver stated she saw smoke coming from both front brakes. The drive was able to park on the side of the road. The driver stated that the brake pedal was seized on the floorboard. The driver stated she applied the parking brake to release the brake pedal. The driver was able to drive to her residence. The contact stated that his wife had experienced the failure on 3 different occasions. The vehicle was not diagnosed or repaired. A dealer was not contacted. The VIN was associated to the federal safety agency Campaign Number: 11V113000 (Vehicle Speed Control) and the federal safety agency Campaign Number: 03V146000 (Fuel System, Gasoline). The manufacturer had not been informed of the failure. The failure mileage was approximately 240,000.

Filed Sep 30, 2020 · Fuel system · 125,700 miles · AZ

My children and I almost died twice! 4 runner almost caused serious injury or death. 9/24/20, 6:15 pmish, vehicle in motion for approximately over an hour, 70mph cruise control set, beginning to climb up a large mountain westbound interstate 8. Engine hesitates/stalls briefly, steering became difficult, car shuddered, was difficult to maintain control of vehicle, only lasted seconds. At a slower speed engine back up and all was fine, assumed it was not a major issue. Continued driving the vehicle for the next two days at same higher speeds and for long periods of time. 9/26/20, around 6:30 pm, vehicle in motion for over an hour, about 70mph flow of traffic, not in cruise control, flat road, eastbound interstate 8, left lane of 4 lanes of traffic. Engine stalls/hesitates for about 10 long seconds, loss of power steering, almost ran into barricade on left, almost ran into car on right, luckily no one behind us. Saw blackish smoke out rearview mirror. Loud sounds, shaking and grinding. After about 10 seconds and crying/screaming kids, engine no longer stalled and was able to control vehicle to turn on hazards. We are lucky to be alive! Safety exited, contacted toyota service to inform them. Vehicle towed 161 miles to dealership, they see nothing wrong with the vehicle and were ready to release it to us. Back story, most all service performed by toyota dealership and did what was suggested. 8/31/20 toyota poway installed fuel pump safety recall (prior to this I had no issue, this was preventative) a week later engine light on, alexander toyota, finds my safety recalled part was incorrectly secured/installed. They fixed it and returned the car. Since the fuel pump safety recall part was improperly installed we are now experiencing engine hesitation/stalls, our vehicle is unsafe can cause serious injury of death.

Filed Nov 10, 2018 · Acceleration, Airbags · 68,471 miles · NM

Needed to use my horn when someone drifted into my lane on the interstate. The horn did not work. I could not honk to inform that driver to stay in his/her lane. Afterwhich, I took it to my toyota dealer. They diagnosed and discovered the spiral cable had an open circuit. They replaced the spiral cable assembly. From what I remember they told me this cable assembly carried wiring for cruise control, air bags, horn and something else. I do not recall the fourth item.

Filed Aug 9, 2017 · Acceleration, Airbags · SC

Takata recall when cruise control is on and going up a hill, engine jolts and accelerates. Has been doing this since we bought it in 2012.

Filed Feb 25, 2017 · Acceleration, Engine · 230 miles · ME

This vehicle is junk. Has no power, excessive vibration, constant ticking, all over the road, cruise control speeds up uncontrollably, sits lopsided, extremely loud, brakes and steering lock up.,lacks heat, poor visibility . All these and more occurr while starting and driving vehicle.

Filed Jun 27, 2013 · Body · PA

While driving at highway speed on dry pavement I ran into a sudden rain bust. My cruise control was on and set at 65 MPH. My speed was slightly above that when I hit wet pavement. As I slowed down the cruise control engaged causing the vehicle to hydroplane out of control and crash into the median of the highway. I had no control over the vehicle at the time of the crash and could not have prevented it. I was only slightly injured but still have problems with my left shoulder from the crash.

Filed Mar 27, 2013 · Acceleration, Brakes · 50,850 miles · VT · crash

I experienced a terrifying "acceleration problem" this past week as I was parking my car at a local store. I'd already slowed down to almost a halt, but as I put my foot on the brake to come to a complete stop, it suddenly lurched forward with shocking speed. I instinctively threw the gear into park; it stopped as it crashed into the steps leading to the store entrance. The cause had nothing to do with a floor mat (I don't have any) nor "sticking" gas pedal (the car had already come almost to a halt before it suddenly accelerated). The brakes were useless and felt like they were disengaged; acceleration may have occurred after depressing the brake pedal (this is still cloudy in my mind). I bought the car new, in 2004. This is the first time I've had any problem. I wondered what I might have done to cause the problem after so many years without any. I realized I'd never used the cruise control feature, until recently, only in the past few months. I was not using the cruise control feature when the incident occurred, but the sudden forward surge felt exactly like what happens when the car is on cruise control and drops beneath the speed at which it's set; it surges forward, on "its own." I believe there's a causal relationship. My concern is two-fold: fixing a potentially deadly problem in my own toyota, and helping identify the cause of the problem so it can be fixed by toyota before another tragedy.