2021 Toyota Highlander

On July 19, the car was parked and refused to start. Tried Jump start and the gas was at more than half a tank. The car would operate for 30 seconds, stutter and then stop. On July 20, took the car to ED MARTIN TOYOTA in Noblesville, IN. They could not diagnose the issue. Replaced Fuel Pump system. Evaluated all electrical and no issues observed. Escalated to TOYOTA Regional Engineering to teoubleshoot. The car is still in the shop with no root-cause. If the car was in motion and this issue would have occured, could have resulted in a serious accident.

Vehicle was driving at highway speed, transitioning to off ramp. Warning lights came on stating Braking Power low. Brakes proceeded to fail. Stepping on brakes did nothing but initiate a stuttering response. Vehicle would not slow down. Rolled into dealership that was luckily .5 miles away. It was diagnosed to be a wheel speed sensor. A sensor failing should not cause a vehicle to be unable to brake. Shocked and traumatized over the incident.

When braking approaching a stop light or braking while having curved into a designated turn lane the car lurches forward even though the brake peddle is properly engaged. This causes one to react by pressing harder on the brake pedal and the brakes thankfully stop the surge . I could describe it as an acceleration during the middle of braking. This could easily cause me to hit the car in front of me, a pedestrian or fail to stop at the stop sign or stop light. This is very dangerous. The dealership has been unable to reproduce the problem. It has occurred 3 times in 10 weeks (as I just purchased the vehicle). There were no warning lamps or messages prior to all three incidents. I input the most recent date that it occurred even though the dealership was unable to see the third incident on their computer readout. They did find the prior 2 incidents IN ADDITION to one in 2020 prior to my owning the vehicle. I have noticed on an internet forum others have experienced the same issue. One case has this number associated with NHTSA 220314000811. PLEASE help!!!

Forward Collision Warning and Automatic Emergency Braking isn't functioning as stated in the Toyota Highlander 2021 Owner's Manual. Dealer stated that software tests were conducted and the vehicle's radar and optical sensors are performing in accordance with the test results. However, there is only intermittent warning lights and alarms that are functioning. The dashboard audio and visual alarms only function in rare encounters on approaching a vehicle. The service manager rode with me and when I was approaching a vehicle where an alarm should have sounded or illuminated inside the vehicle, that did not occur. However, the software tests showed that the vehicle was approaching on a collision event that was recorded on the system, but failed to alert the driver. After additional testing, the service manager stated that the vehicle reads stop lights from the vehicle ahead to execute the safety functions of the forward collision warning and automatic emergency braking safety feature. The Owner's Manual doesn't make that claim. In addition, another service manager stated that the system uses artificial intelligence to learn the driver' habits and the system adapts to the driver. The Owner's manual doesn't state that claim either. Lastly, the invoice stated that the owner should read pages 257 and 260 of the Owner's Manual to understand how the system operates. This describes the Dynamic Radar Cruise Control functions and not the Forward Collision Warning or Automatic Braking functions. This information is found on pages 235-238. They missed the problem. My suggestion was that their test only looked at a single variable that may have covered the external sensor operation and didn't test the dashboard internal warning system of the audio/visual alerts inside the vehicle. My recommendation was to seek assistance from the supplier that manufactured this system and seek guidance from their engineering staff. I complained to the Toyota Corporate Customer Servi

When bringing my 2021 Toyota Highlander Hybrid AWD with ~18,000 miles on the odometer to the Toyota dealership for a flat tire and recall, they performed a routine multi point inspection. They found the inverter radiator was punctured and was leaking coolant. They said to fix it would be $1,640. The service representative text me “the technician also noticed that the inverter radiator is leaking coolant, which is a very important and vital part of the hybrid system. It looks to be that a rock from the road was the source of the damage, which since moving down here [AZ] I’ve seen happen quite often….I would strongly advise against driving the vehicle that far (~200 mi) for fear of it overheating and causing more damage. The technician said will end up happening is…the vehicle will overheat and shut down to save the inverter from further damage. This is a very, very important part of the hybrid system. “ When I asked the technician how a rock could cause the puncture and cause the coolant to leak without my knowledge, she said “it sits right behind the front grill and it’s pretty easy to get hit by a rock when you’re driving.” I told her that sounds like a design flaw and asked if there’s a part that can protect this from occurring again. She didn’t know of any Toyota parts to reduce this reoccurrence, but suggested I could look online to buy an aftermarket part. What’s alarming are the photos of the damage and the coolant spraying out from the leak all over the inverter radiator, how much coolant was lost due to this damage, and that I never had a warning light or notification. The car was driving fine and had no warning lights until I got a flat tire the day before the Toyota dealer found the inverter puncture.

When slowing down, It doesn’t happen all the time, but it’s as if the brakes disengage and the car feels like it is accelerating . After a second or two it will engage after I applied a lot harder because I’m freaking out because it feels like I have complete brake failure. I took the vehicle to Toyota and they told me it is normal to experience this because the breaking system is switching between the electric motors and the break calipers. I have been driving for over 40 years and there is NOTHING normal about this! I have gone into intersections at stop signs and almost rear ended vehicles in front of me as a result of this. Just because Toyota has a problem that they acknowledge, but claim that it isn't a problem, doesn't make it right and it is downright dangerous. This issue has been present since purchasing the vehicle.

The rear cross traffic avoidance does not detect a person on a bicycle or motorcycle. The safety sense 2.5 + was advertised and demoed to detect even a pedestrian walking behind the vehicle. The system on my vehicle does not work as advertised and after taking my vehicle to the Dealer was informed by the service manager that the system is "intermittent at best". This is not what Toyota advertises. Dealerships apparently have no signal strength detection equipment to verify proper operation of this system. I have reviewed multiple videos of this system in operation and there were no indications of intermittent failures. I have contacted Toyota Customer support and am being ignored.

I have a 2021 Toyota Highlander XLE with a panoramic sunroof. on 5/11/2022 I was driving on the road when I heard an extremely loud explosion. I looked around and didn't see any damage, then I pulled off the road to discover that the sunroof had exploded. I called the dealership and they referred me to Safelite. Safelite took my information and called me back 2 days later to inform me that they don't stock the part I have to go to the dealer. I booked an appointment with the dealer (Sheehy), I took the vehicle in, they inspected, and I was told by Sheehy that "they've never heard of such a thing" and they were going to call the manufacturer to see if they will approve my repair under warranty. They called me back about a week later to say my claim for repair costs was denied due to, in their words "outside influences". There were no rocks, debris, etc. found that could have contributed to the moonroof shattering. Fortunately, I had the shades pulled otherwise I would have been covered in broken glass. There was no damage to the shade to indicate an object fell on it. After a quick google search, I saw that other SUV owners had experienced this same phenomenon and were told the same thing- outside influences caused this. Toyota should inform consumers about this issue and fix it no questions asked when this happens rather than try to brush it under the carpet especially when the vehicle is still under warranty. This presents a road safety issue as flying glass could get injure other people.