2021 Subaru Outback: adaptive cruise control problems

Filed Aug 7, 2025 · Acceleration, Electrical · MD · crash

While slowly backing out of a parking space, the vehicle suddenly accelerated on it's own - I do not recall pressing on the accelerator but the engine surged and the vehicle rapidly reversed and struck 4 other parked cars. It felt as if the accelerator became stuck and would not respond to braking. No warning light or dashboard alerts appeared. Subaru eyesight and adaptive cruise control were not engaged at the time. There was no known obstruction under the petals. This felt like a serious malfunction and could have caused serious injury. I am reporting this in case it is part of a wider issue affecting this model and because i see that there are multiple complaints to you about sudden unintended acceleration, especially during low speed maneuvers like backing out a parking space.

Filed Apr 2, 2025 · Driver assistance, Electrical · NM

Thermo Control Valve. Check engine light on. Eyesight Adaptive Cruise Control Automatic Emergency Braking Blind Spot Warning Forward Collision Warning Lane Departure Warning Lane Keeping Assistance X mode Dealership would not honor repair even though there is recall it does not cover vin 63400 miles Vehicle inspected by manufacturer code P2682 Check engine light is on and eyesight warning

Filed Dec 27, 2024 · Acceleration · 25 miles · TN

The contact owns a 2021 Subaru Outback. The contact stated that while driving 60-75 MPH, the vehicle experienced unintended acceleration. There was no warning light illuminated. The contact stated that the failure recurred while driving downhill with adaptive cruise mode activated. The contact stated that the failure recurred several times while driving. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 25.

Filed Dec 1, 2023 · Acceleration, Driver assistance · NY · 1 injury

My vehicle is equipped with EYESIGHT. I was driving to my home after work at night and suddenly the infotainment system screen went blank; including Braking Assist, Adaptive Cruise control, Lane assist, Emergency Braking etc including Navigation, also the HVAC shut off and EYESIGHT that controls these as well, shut off. It was suffocating in the car due to no A/C and thusf I tried to pull over at a remote text-stop place and tried restarting the car but in vain. All screens were dark, no warm air, I couldn’t see what direction I was driving to, as well as I solely relied on navigation. I brought this car for it’s safety features and warmth in this cold temperature in UPSTATE NY and this happened. I waited for 20 mins, charged my phone for only 4-5% with a fellow citizen who was waiting there as well and checked online just to see a lot of people reported the same issue with 2021 Subarus with EYESIGHT. And there is NO way one can fix it. I tried contacting the dealer but in vain. I am afraid that if this would happen again, I wouldn’t be in a situation to face this scary experience.

Filed Oct 25, 2023 · Acceleration, Driver assistance · NE

while i am driving my cruise control will just stop working causing the auto braking feature to stop also

Filed Sep 6, 2023 · Acceleration, Engine · FL

I was driving and suddenly 13 flashing lights and codes from check engine to loss of cruise control and RAB -dealer says it needs a new thermo control valve (thermostat). This failed part has been common on Subarus for 3 years-reported on internet and even to the point where a guy sitting next to me today with same car and year and same $1800 bill and diagnosis. Should be a recall. Part was redesigned in 2022 I read.

Filed Feb 3, 2023 · Driver assistance · 14,000 miles · CT

The contact owns a 2021 Subaru Outback. The contact stated that while driving approximately 68 MPH with the cruise control activated, the vehicle suddenly lost motive power. No warning lights were illuminated. The contact stated that it was difficult while attempting to shift the gear lever out of drive(D). The contact stated that once she was able to shift the gear shifter, she shifted into park(P) to turn off the vehicle. The vehicle was restarted after multiple attempts. The contact then noticed that the parking brake had engaged independently. The vehicle was taken to a local dealer, where the failure could not be duplicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 14,000. The contact stated while driving on Mass Pike the Adaptive Cruise control was engaged, in the middle lane and no problems the vehicle lost power. After five minutes and traffic moving, the vehicle was trying to reboot but the emergency brake was on without anyone applying it. And the contact had a difficult time putting the vehicle into to park to restart the engine.

Filed Sep 16, 2022 · Acceleration, Driver assistance · VA

I purchased the car new in January 2021. During the first several months there were no issues. After that, the "Infotainment" system which controls the sound, nav, hvac, etc. systems would suddenly go black and those functions would stop working. It would seem to reboot as a computer does when you restart it. That was distracting but mostly just annoying, lasting less than 30 seconds. I will call that a "soft reboot." That happened many times over the next few months. On two occasions, the screen would black out and not only those systems would cease to function, it would shut down cruise control and Eyesight. Call that a "hard reboot." This was very dangerous. In traffic at 70-75 mph when the cruise control suddenly stops working, the car decelerates immediately and quickly. There are no warning signs or messages; it just goes black and shuts down those systems. Cars following would quickly be within a dangerous proximity. Not a safety issue but a hard reboot also wipes clear some settings including the nav destinations. During that period I spoke with service managers at two Subaru dealerships who said that it was a common problem and Subaru had issued a "patch" that was supposed to fix it. I live approximately an hour from the nearest dealership and had some difficulty finding a time to take it in for the upload. Finally I took it in to Scenic Subaru in Mt. Airy, NC on September 9, 2022 to get the update, with around 22,500 miles into a 36,000 mile warranty. I left the dealership at approximately 4 p.m. headed for Winston Salem, NC, approximately an hour drive. Within 5 miles from the dealership it did a soft reboot. That happened two more times. I called the dealership to advise them but it was too late to return. Then, still within an hour from the dealership, it did a hard reboot, shutting down everything as I described above. It functioned properly until it did a soft reboot today, 220 miles after the update.

Filed Jun 3, 2022 · Acceleration, Driver assistance · NC

The Navigation system will randomly go blank and then restart while driving. This not only affects any navigation which is currently in progress, but also disables the Cruise Control, Eye Sight, Lane Departure and other Safety devices. This has occurred numerous times while driving on an interstate highway and is dangerous and life threatening.

Filed May 16, 2022 · Electrical · OH

vehicle about 14 months old, I purchased new Tried to start vehicle battery dead, no lights or other acc. had been left on. two weeks later battery would not start car, I jump started car according to directions in owners manual. After jump start several check engine lights came on, cruise control did not work. lane control and "EYESIGHT" failure warning light was on. Subaru dealer replaced battery under warranty

Filed Feb 24, 2022 · Driver assistance · MD

The main computer system that controls the eyesight system, cruise control, lane departure, all HVAC controls, navigation, etc. Shuts down (goes black), and reboots randomly. When this occurs, all of the functions and controls associated with the computer system are lost. Cruise control drops out and the built in safety features are disabled. It is distracting to the driver and requires the driver's attention to reset features that were lost. It is a known problem by subaru and has not been fixed on my vehicle for over a year now. This complete computer blackout event occurs almost every time I drive the vehicle.

Filed Nov 7, 2021 · Driver assistance, Electrical · MD

2021 outback purchased Feb 2021. Within 2 weeks the touch screen, which controls the cruise control, heating, all eyesight controls went blank. This causes cruise control at highway speed to quit, causing sudden deceleration at highways speeds. Sometime the screen reboots, most times it requires driver to pull car over to reset. This also controls GPS and Heating/Air. There have been times when I have working canines in the car and loss of air conditioner in summer months has been extremely problematic requiring pulling car off road to open windows to ventilate. Multiple trips to dealer, and open case with SOA results in no resolution, as there apparently is no fix. Recently 11/1/21 instructed when this happens to push my front defroster button five times after reboot to record codes. How distracting while driving is this? Feel like this is severely underreported as owners frustrated. Receiving dealer instruction to look at touchscreen while driving causes the cars alert function to activate saying “keep eyes on road”. Why are they advising this unsafe action? Recent software updates as late as last week of October installed and does not fix issue, verified by dealer service manager. Multiple incidents, recorded on my phone video, last incident occurred 7/12/2021.