Warning Problems of Toyota 4Runner

The lka system steers the vehicle into the oncoming lane of travel under specific and repeatable conditions. The defect occurs as follows: while the vehicle is traveling and the lka system is following the left lane marking, the vehicle approaches a marked left-hand turn lane or turnout where no fog line is present on the right-hand side of the road. In this situation, the system abruptly attempts to steer the vehicle toward the turn lane. Because the turn lane is positioned to the left of the driver’s actual lane of travel, this steering input pulls the vehicle toward and into the oncoming lane of traffic. This steering intervention happens without warning and without any input from the driver. Given that it moves the vehicle into a lane carrying oncoming traffic, it presents a direct risk of a head-on collision. Manufacturer response I contacted Toyota regarding this issue and was told that this behavior is normal, and that the system will use whatever lane marking is available to determine its steering path. Toyota did not indicate that a fix or software update was planned. I do not consider “the system follows whatever line it has” an acceptable explanation for a feature that actively steers a vehicle into oncoming traffic. Why this is a safety defect 1. The system takes an abrupt steering action with no driver input and no warning. 2. The result of that action is movement into a lane used by oncoming traffic, which is the most dangerous possible outcome of a lane keep assist malfunction. 3. The condition that triggers this behavior (a marked left turn lane with no right-side fog line) is common on ordinary two-lane roads and is not something a driver can always anticipate or avoid. 4. The manufacturer has acknowledged the behavior exists and has characterized it as expected operation rather than a defect.

See all problems of the 2025 Toyota 4Runner 🔎.

I was driving down the highway when suddenly I heard a loud noise that resembled a gunshot, and shattered glass started flying all around the front of my vehicle. It turned out my sunroof had unexpectedly exploded. It was like the car was under pressure and it was relieved through the sunroof. I had my air conditioner on and my windows up. My sunroof cover was open and broke glass managed to be scattered everywhere. This resulted in glass fragments coming into contact with my face and arms, leading to a painful burning feeling on my skin. Luckily, a Toyota dealership was 2 miles away. I immediately drove to the dealership so my vehicle could be repaired. The replacement part was not available for my vehicle so I had to stay in a hotel until my vehicle could be repaired. This incident caused me a great deal of anxiety and I don’t know if I can trust this will not happened again.

See all problems of the 2023 Toyota 4Runner 🔎.

Since an inspection oct 2021 the rust/corrosive on the frame has become. Dangerously close to rotting thru the entire frame! it’s not driven in the winter months when snow or ice melt (salt) is on the roads to prevent situations like this. With only 75,000 miles always garage kept and maintained like it’s brand new this vehicle might be able to be saved for a model in a shop class to practice welding. Something needs to be done because this ifvvjj.

See all problems of the 2006 Toyota 4Runner 🔎.

I purchased a 2022 Toyota 4runner and 9 days later the wiring harness was destroyed by rodents most like squirrels. Toyota switched to soy based wire insulation without taking precautions in the design to protect the wiring from rodents attracted to the insulation material. The resulting damage cost $8000 to repair and it will take months for the harness to be in stock. This failure caused all safety features to be disabled leaving the vehicle without standard safety functions.

See all problems of the 2022 Toyota 4Runner 🔎.