2018 Toyota Tacoma: adaptive cruise control problems

Filed Feb 28, 2022 · Driver assistance · WV

While driving on 3 lane interstate, with the adaptive cruise control on, while passing a semi truck the front collision brake system activated. I was doing 72 miles an hour when it happened. The result was almost got rear-ended by another vehicle when my truck applied the brakes unexpectedly. The semi did not cross into my lane. My lane was clear. 0

Filed Aug 10, 2021 · Driver assistance · UT

2018 Toyota Tacoma problem. I purchased the truck in October of 2018. On July 31, 2021 @ 3:50 pm While driving home I was in cruise control @ 82 mph when the display showed malfunction. The truck went from 82 mph to 60 within seconds again. A car behind me was able to change lanes to avoid an accident. The trucks display readings were Malfunction of headlight, radar cruise control unavailable & Lane departure alert malfunction and visit the dealer. After getting home I shut the truck off and restarted it. The malfunctions had cleared again. I made an appointment with the dealership for August 5, 2021.They worked with Toyota representatives to trying to solve the problem but couldn’t identify it. The conclusion was when it happens again bring it to the dealership (if possible) before shutting it off so they can do a diagnostic test while the truck is still running and showing the malfunction display. Luckily, when it occurred I was on a road with every little traffic. My problem now is that I don’t trust driving it using cruise control in normal traffic or at night not knowing if the headlights will shut off or the cruise control will shut down. This is the second time this has occur. The first time was in Aug 2019. I took to the dealer but they couldn’t identify the problem. My thought at the time was it may have been a one time event but it was not. I have pictures of the truck’s displaying the malfunctions on both events.

Filed Jul 25, 2020 · Transmission · 8,000 miles · FL

In august 2018, I purchased new, a 2018 toyota tacoma sr5, 4 door, 2 wheel drive, automatic transmission. The transmission jerks/delays/staggers at speeds of mid-30's, mid-40's, and around 65 MPH. This started around 8000 miles. Occurs with or without cruise control on. It has been to the dealer for 8 assessments or repairs for this issue. Recently, the transmission did not change gears until 4000 rpms while I was pulling a small utility trailer. We had to travel at less than safe highway speeds until pulling over. This almost resulted in an accident. The problem is constant and reproducible. The service manager at the local dealership claims this happens in some, but not all 2018 tacomas. This is a safety issue.

Filed Jan 30, 2020 · Acceleration, Fuel system · 48,000 miles · AL

My 2018 tacoma had a check engine light come on, then the trac light came on. Cruise control quit working and engine runs rough. When driving, vehicle begins to lose acceleration and check engine light begins flashing. When idling, engine runs with with a miss, and when driving, at lower speeds the vehicle shudders as if its losing power.

Filed Dec 13, 2019 · Transmission · MD

My transmission isn't working properly. It doesn't shift when it should or it downshifts when it shouldn't. When I am using cruise control it's stays in low gears way to long and reeves the engine very high. Once I take it off cruise control it gets better but still isn't right. This has happened since I purchased the vehicle in 2018.

Filed Sep 17, 2019 · Acceleration, Driver assistance · 12,957 miles · GA

Tl* the contact owns a 2018 toyota tacoma. While driving 72 MPH with the cruise control activated, the speed erroneously increased to more than 90 MPH. Also, the collision avoidance system malfunctioned and did not slow down or stop the vehicle when approaching a second vehicle. In addition, while the cruise control was activated, the vehicle would suddenly decelerate after the cruise control erroneously deactivated. The cause of the failures was not determined. The local dealer (chatham parkway toyota, 7 park of commerce way, savannah, ga) was contacted. The manufacturer was not notified. The contact indicated that the vehicle was previously serviced to repair a wave radar sensor. The failure mileage was 12,957.

Filed Jul 11, 2019 · Acceleration, Brakes · 6,500 miles · NV

With laser cruise control on, vehicle will suddenly slam on the brakes and release with no other vehicles in front of it. This has happened 8 or 9 times in the time I have owned the truck. I have taken it back to the dealer 4 times for this problem, only to be told that they cannot duplicate it and nothing was done to repair the problem. The next day I received a recall notice to bring the truck to toyota to repair a front sensor for this problem. I brought the truck in to the dealer and they said that water was getting into the front grill sensor and they glued a piece of rubber/foam over the sensor. A few days later the same thing happened again. My wife and I are afraid to even drive the truck and toyota has said everything is ok. The second problem is with laser cruise on and set at 75 miles an hour traveling up a grade, the vehicle will downshift into third gear running the tach to 300 RPM's over the redline. Toyota says that this is fine and the truck has a governer to keep the truck from over revving 300 RPM's above redline at 5800 RPM. I explained that in the owners manual it says to never run the engine to redline. Again toyota says this is normal and that they will not fix the problem. Redline is 5500 RPM.

Filed Apr 18, 2019 · Acceleration · 19,500 miles · MI

Tl* the contact owns a 2018 toyota tacoma. While driving approximately 65 MPH with the cruise control activated, the vehicle suddenly accelerated to over 100 MPH. The vehicle was taken to suburban toyota (35200 gran river ave, farmington hills, mi) where it was diagnosed that the failure was due to a faulty sensor. The vehicle was not repaired. The contact indicated that the failure occurred on multiple occasions. The manufacturer was not notified of the failure. The failure mileage was 19,500.

Filed Nov 6, 2018 · Acceleration, Engine · 500 miles · LA

Transmission locks out in 4th gear, mid speed surge, surge at idle when turning the wheels. Cruise control doesn't function it will increase RPM's on a flat road.