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.

- Belleville, WI, USA

We purchased the highlander a few days ago from a Toyota dealership. There are currently no recalls that have not been addressed and the car seemed to be in great condition. Driving the last few days there have been times that the brakes just don't function properly. I went online to see if this was an issue that had been reported. I found this description below and it is exactly my experience as well. This site has the other complaints that match my experience. Feeling like you don't have brakes for a few seconds is going to lead to accidents. I have a 2005 Highlander and I am sad I spent so much money and would feel safer driving my old car. It has not been confirmed by a dealer, or inspected, and there are no lights on the vehicle. I don't know where to go for an honest assessment. https://m.carcomplaints.com/Toyota/Highlander/2020/brakes/service_brakes.shtml I have experienced brake issues, on any slight decline where the braking system will let up as if the braking is not working for a moment, and also, a jerk forward once stopped. This will lead to an accident and potentially, a pedestrian getting hurt if not addressed. I took it to the dealer and they stated they could not replicate the issue, therefore, did not run diagnostics on the vehicle and will do nothing else for me. I have great concern this will lead to an accident and after 30 years of driving, I'm having to constantly think of leaving enough room between myself and other cars to avoid an accident, and adequate room for a brake malfunction. I have another 2020 hybrid Toyota that does not have this issue. So, it is not an issue with all hybrids. - Berkley, MI, USA

- Columbia, SC, USA

On several occasions the brakes will get very weak and you have to apply normal than normal pressure. There-€™s a second where it feels like the brakes have failed. All occasions have been on dry flat roads. This last occasion I was turning into a grocery store driveway and in the turn the brakes failed and I had to press hard and turn harder or I would have ran into the car leaving the driveway. It-€™s not the hybrid system. I-€™ve owned prior Toyota hybrid and the brakes don-€™t give out like this. Sometimes it-€™s less that 5MPh but it-€™s also done it at 10-15mph. Both times the batteries are not fully charged so there isn-€™t any reason why the regenerative breaking should be suddenly shutting off causing the breaks to feel soft.

- Palo Alto, CA, USA

ECU system failure. Dealer ship is stating ECU system was damage from soda or coffee which is not accurate found a recall on this vehicles with the same issue our vehicle is having.

- San Francisco , CA, USA

I have experienced brake issues, on any slight decline where the braking system will let up as if the braking is not working for a moment, and also, a jerk forward once stopped. This will lead to an accident and potentially, a pedestrian getting hurt if not addressed. I took it to the dealer and they stated they could not replicate the issue, therefore, did not run diagnostics on the vehicle and will do nothing else for me. I have great concern this will lead to an accident and after 30 years of driving, I'm having to constantly think of leaving enough room between myself and other cars to avoid an accident, and adequate room for a brake malfunction. I have another 2020 hybrid Toyota that does not have this issue. So, it is not an issue with all hybrids.

- Berkley, MI, USA

Several times while applying the brake, particularly when braking slowly and often either downhill or turning a corner, there seems to be a gap in the braking. It feels like I have let my foot of the brake, but I have not. It is very brief. I have taken this to the dealer and they indicated they were able to replicate it and tried to fix it, but the problem has continued. For the approximate date asked about below, it has probably happened at least 50 times and it's happened with our two household drivers.

- Springfield, MO, USA

When going downhill and applying the brakes slightly. You keep your foot constant on the brake pedal. Braking some. The car would suddenly release the brakes for a second or two at speed about 35-40 mph. Then it catches up the brakes again. This looks really dangerous when you drive. I don't like this at all. It happens regularly to me. Maybe once a week or so. I started noticing it a while ago.

- Foothill Ranch, CA, USA

The contact owns a 2020 Toyota Highlander. The contact stated that upon the depression of the brake pedal, the vehicle would intermittently surge forward without warning. The contact stated that he would shift the vehicle into neutral to stop the vehicle from surging. The contact also stated that the blind spot monitor's unavailable warning message would intermittently appear on the instrument panel. The contact had taken the vehicle to Bayside Toyota and Waldorf Toyota and each dealer was unable to duplicate or diagnose the cause of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 21,000.

- Pomfret, MD, USA

I have a 2020 Highlander hybrid. When I brake my stopping pauses a half second to a second then brakes normally. I am afraid that I can get into an accident due to this happening at the wrong time or if I loan my car to another driver that is not aware of the problem. I took it to the dealer and couldn't reproduce the fault with their computer connected. Though this has been happening about every other day or so. there were no warnings prior, it just happens randomly! Please go to the attached Toyotanation.com link to see other people having the same issues with their Highlander Hybrids. https://www.toyotanation.com/threads/2021-highlander-hybrid-platinum-not-braking-properly.1694783/

- Phenix City , AL, USA

My Toyota Highlander is a hybrid and there is an ongoing problem with the brakes under certain conditions. When you are slowing the vehicle down, with your foot on the the brakes, there is a point under 10 miles an hour, where the brakes appear to let go and you must quickly exert dramatically more pressure on the brakes to stop the car. Fortunately it has not resulted in an accident because my wife and I are aware of the potential danger. The danger is, this occurs when you are stopping at a stop sign or crosswalk, pulling into a parking space, or around pedestrians, even pulling into our garage. I have own previous Toyota Hybrids and this vehicle behaves very differently. In my opinion the route of the problem may be the regenerative braking. As you step on the brakes the regenerative braking supplies most of the braking power and then at a slower speed the regenerative braking abruptly dis engages. It seem there should be a way to smooth the erratic behavior of the brakes. I have filed my concerns with the Toyota customer experience center in November of 2020 under my name and file number #2011280027. The car is available anytime to demonstrate the problem, there are no open recalls for this VIN#, and I have been told there are no service bulletins for this problem. The problem has occurred the whole time I have owned the vehicle.

- Raleigh, NC, USA

I was at a stop sign in my 2020 Highlander waiting to turn left onto a busy road. Upon turning left onto pa state highway 999, the Highlander engine turned off and the steering wheel was "locked" into a left position. This caused the car to continue turning into the opposing left lane resulting in a head-on collision with an on-coming car. With the engine turned off there was no power steering, no brakes, and no way to unlock the steering wheel. The collision caused my car to bounce back and slowly free roll back to the stop sign as though I never entered the roadway.

- Lititz, PA, USA

We recently purchased our Highlander and it has a little over 4,000 miles. Today while driving down the road at about 45 mph, the car just lost power and the check engine light came on. 1. check engine - reduced engine power 2. secondary collision brake system malfunction we had to park and wait for the Toyota dealership to come and tow it to the service center. At this point I don't know what was wrong or why it just cut out while driving. I am very concerned and can only hope Toyota can address this or replace the car.

- Sparks, NV, USA

I have been having intermittent issues with the brakes when turning on my car and going in reverse. On one occasion, after turning on the vehicle and putting it in reverse, the vehicle did not move despite being on level ground. I had to apply pressure on the accelerator and heard the car strain a little before I heard a sound come from the brakes and the car suddenly jerked backwards. I did not have my foot on the brakes and I did not have the emergency brake on. After this the bakes appears to function as usual. Another time, I turned on the car and went in reverse but the car did not move. I applied the accelerator and heard the car strain a bit then it jerked back. I applied the brakes but the brakes were in responsive unless I pushed on them with significant force. I came to a stop and them took my foot off the brake to resume backward motion to exit my parking spot. Again I did not move forward and had to apply pressure to the accelerator which cause the car to initially strain then suddenly jet backwards. I again applied pressure on the brakes which again were initially unresponsive until I put significant pressure. This cycle happened a total of 4-5 consecutive times prior to the brakes resuming normal function. Brakes functioned normally between this incident and the one mentioned earlier in this complaint.

- Bloomington, MN, USA