Toyota Highlander lane assist problems

Filed Mar 31, 2026 · Driver assistance, Electrical · FL

The vehicle experiences intermittent power steering malfunction while driving. Warning messages including “Power Steering Malfunction” and “Low Voltage Abnormality” appear, and the steering wheel becomes stiff and difficult to turn. This has occurred multiple times during normal driving conditions, including at low speeds and while turning. When the issue occurs, it requires increased effort to steer, creating a risk of loss of control. Additional warning messages have included AWD malfunction, pre-collision system malfunction, and lane tracing assist malfunction. These alerts appear simultaneously with the steering issue. The problem began shortly after purchase and has continued intermittently. The vehicle has been inspected, but the issue has not been resolved. This condition creates a safety risk, especially when driving with passengers.

Filed Jul 8, 2024 · Driver assistance · NY

On a trip to NC on June 27 2024, then on to Hilton Head SC on 6/29, multiple system warning lights suddenly appeared on the dash including ABS, Lane Departure Warning, BSM, notifying me that those safety features were not available on the vehicle. Sometimes the the lights would disappear, especially if the vehicle was stopped and the engine was turned off at a rest area. Because the check engine light was not lit, I continued to our NC destination. We continued our trip on 6/29 to Hilton Head, and the lights continued to appear, sometimes staying on for an hour or more. I called my Binghamton NY Toyota dealer who advised me to have the problem looked. I was able to have the car seen at Savannah Toyota (GA) where they diagnosed the problem as an issue with rust and debris on the left front speed sensor. I had the recommended service performed. The service report says that I requested replacing the ABS sensor, which is totally false, because I had no idea what the problem was, I just wanted it fixed. The part was ordered and replaced the next morning. All the lights were back on the next day when I drove back from Savannah to Hilton Head. I did not have time to go back to the dealer, but did notify the service manager of the situation. I drove the vehicle back to NY with the warning lights on (most of the time). I now have a service appt with my local dealer on 7/9/24 to determine the next step.

Filed Oct 27, 2023 · Driver assistance · MD

The lane assist will not stay turned off, even when it is done manually each time I get in the car. The steering pulls me back when I'm trying to change lanes, making it unsafe.

Filed Mar 19, 2023 · Brakes, Driver assistance · WI

When I am using the brakes an a medium rate the vehicle will loose its brakes for a second causing a loss of control on the vehicle. This happens randomly and caused us to almost go off a culvert of a driveway once. It has scared us many times to thinking we were going to hit the car in front of us. It makes my wife sick every time it happens. Smart motors and regional techs from Toyota have looked into this issue and determined this to be a “feeling” and not a safety hazard. This is not the case and needs to be fixed before someone gets hurt. Lane Keeping assist is unusable. When it is turned on it fights with the driver. It will swerve back in forth in its lane and sometimes so bad it feels like the car would roll if it was not turned off and got worse. Every once in a while it will try to take an exit on the highway by itself. Date of incident in questionnaire is approx to the last time it happened. It has happened too many times to count. Vehicle mileage is when we first started really having issues with the brakes. Lane assist is an always thing.

Filed Jan 3, 2023 · Driver assistance, Electrical · TX

The door locks will not unlock or lock. Had to replace two so far and now the other side is doing the same. Pre collision, Lane departure, cruise control and traction have malfunction. Unknown as to why at this moment.

Filed Jan 2, 2023 · Driver assistance · OR

The system designed to prevent lane departure has a particular issue with the dashed road markings that denote the entrance to tapered deceleration lanes or right-hand exit ramps on Oregon freeways. I have not noticed an issue when similar markings are on the driver's side. In particular, the in section 360, figure 360-A of the ODOT Traffic Line Manual (https://www.oregon.gov/odot/Engineering/Documents_TrafficStandards/Traffic-Line-Manual.pdf) the line marked "WD" is consistently able to fool the lane departure system and allow the vehicle to drift or steer toward the "Physical Gore Point" as shown in the figure. On November 11th, 2022, I very briefly took my hands off the steering wheel to unscrew the cap on my water bottle while lane centering was activated on the lane departure avoidance system and the vehicle steered to the right without warning while passing an exit lane having the "WD" markings. This nearly resulted in my Highlander leaving the road at freeway speeds. Now, I understand this is not responsible behavior on my part, but these things occur, and it may result in accident or death in the future if it hasn't already. The system is otherwise quite reliable. However, I was previously aware of the issue as it has happened for as long as I've owned the vehicle. This is the first time it nearly caused an incident because I normally do not remove my hands from the steering wheel completely and can correct the steering manually. No warning lamps or messages were observed, but the lane departure warning may have sounded after passing the "WD" markings. The issue has not been reproduced by any service center on my vehicle, nor has it been inspected by another party. On carcomplaints.com another Oregon resident mentioned a similar issue as an additional note about an unrelated braking issue: https://www.carcomplaints.com/Toyota/Highlander/2022/brakes/service_brakes.shtml I would be willing to make the vehicle available for testing/inspection.

Filed Jul 5, 2022 · Brakes, Driver assistance · OR

When braking, and going down a slight grade, and when there is a slight bump in the road, the brakes seem to cut out for a second or surge. This will only last for a second and then the brakes will engage again. This could cause an accident if the car in front of me stops suddenly. On the lane departure warning, if an on ramp is merging into lanes (truck by passenger lanes on I-5 in Portland), the lane departure gets confused by the merging lane markings and alters the steering. This could cause a crash

Filed Aug 31, 2021 · Steering, Suspension · NY

I was forced to change lanes quickly from the left lane to the left shoulder of an interstate when a double tandem tractor trailer moved into my lane of traffic. The interstate was dry and the left shoulder was in excellent condition and wide enough to accommodate my vehicle easily. All lane assist options were turned off, the driving mode was set to “economy” and the cruise control was turned to “off”. A few seconds after entering the left shoulder of the interstate, I felt the rear end of my vehicle sway from side to side for a few seconds. After the swaying ended, I thought there was a brief loss of vehicle control after which the vehicle returned completely to my control. My vehicle is a Toyota Highlander Limited AWD gas engine SUV with about 2700 miles when this occurred. I drove my vehicle without any emergency steering maneuvers 2700 miles prior to and 500 miles after this incident without any problems. I had my Toyota dealer examine the suspension, steering and event recorder of the vehicle and test drive it. They found the vehicle to be performing within manufacturers specifications and without any defect in the steering or suspension and found no codes found in the event recorder.

Filed Jul 24, 2021 · Driver assistance · SC

The lane keeping assist does not work properly on my vehicle. The lane keeping assist does not keep my car in the center of the lane as intended. For instance, it very forcefully makes the car drift to the left and right of the lane and frequently pulls it into the other lane. I have reported this to my local dealership - Sparks Toyota in Myrtle Beach, SC and Toyota Corporate. Sparks Toyota service has admitted that there are many customer complaints about this issue. They have stated that there is a software download "fix" in the works, but not yet available. I did not take their word for this and called Toyota Corporate. The only "solution" I have been offered is an offer to show me how to turn the feature off. This is totally unacceptable as the is an important safety feature that does not work properly and in fact, creates an unsafe situation while driving. Since my report of the issue, I have been made aware of an owners Facebook forum that other owners state they are having the same issue and seems to be a widespread problem.

Filed Jun 9, 2021 · Driver assistance · CA

I consider this a vehicle safety issue. Was on the freeway, center lane of a 3 lane highway. The vehicle to my left began to move into my lane. I had to quickly move to my right, activating my lane departure and steering assist. This caused my vehicle to attempt to move me back into my lane (where the other driver was now trying to occupy!). I was shown how to disable this feature if desired but what I wasn't told by the dealer, is that this feature can no longer be set to default to off. I just finished a lease of a 2018 Toyota Rav4 which also had this feature but once I disabled it, it was disabled unless I re-enabled it. With this new vehicle, when you disable this feature, it's only disabled until you turn off the vehicle. When the vehicle is turned on again, this feature is set back to active. I checked with the dealers service department and they said that this is how this feature will work moving forward, that you can no longer set it to off as the default setting.