Toyota Tacoma collision warning problems

Filed Oct 11, 2026 · Acceleration, Engine · NC

2026 Toyota Tacoma (i-FORCE 2.4L turbo, 8-speed automatic), purchased new, 2,051 miles. On the morning of XXX, I noticed a delay when the transmission shifted gears and shortly after while driving on the highway at approximately 55–57 mph, multiple warnings appeared at once: Check Engine, "Drive-Start Control Malfunction," "System Malfunction" (pre-collision and lane assist), and "Secondary Collision Brake System Malfunction." Shortly after, the transmission stopped engaging. When I pressed the accelerator, engine RPM rose but the vehicle did not accelerate, a loss of drive power at highway speed with traffic around me. This created a serious crash risk. The collision-avoidance systems were disabled at the same time. Photos of the warning messages are attached. The vehicle is being taken to a Toyota dealer in [XXX] by AAA for diagnosis. Similar reports from other 2024–2026 Tacoma owners suggest this may not be an isolated issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 8, 2026 · Driver assistance, Engine · CA

Having two issues major issues that’s causing me a $10,000 bill. The timing cover is leaking and there is a coolant bypass hose that is leaking. I have spend a lot of maintenance on this truck on maintaining it to have to remove the engine. As for the forward collision warning ive had it go off multiple times witout a vehicle there. While in cruise control ive had it unexpectedly break on me when there was no visible vehicle infront or next to me.

Filed Jul 22, 2026 · NV

Vehicle hits a bump in the road and the check engine light comes on, followed by the gas pedal being non-responsive and an error code on the instrument panel saying “Brake Override System Malfunction. Check with dealer.” and “Pre-collision System Malfunction. Visit your dealer. ” When this occurs, have to coast the vehicle to a safe place, turn off and wiggle the Radar Control piece attached to the front grill sometimes multiple times before the truck will clear the code and accelerate. Been an ongoing issue for several months. Have replaced the front grill sensor and plate and the issue persists.

Filed Apr 5, 2026 · Driver assistance · VT · crash

My 2025 Toyota Tacoma engaged the emergency braking/pre-collision system system while my vehicle was going under 10 mph on a steep road in winter conditions. My vehicle was completely under control before the system engaged and there was no risk of a collision with any vehicles in front of me. The emergency braking system engaged and rendered my vehicle completely out of control. I tried desperately to pump the brakes in hopes I could regain control of the vehicle, but the brakes were fully locked. Had the brakes dis-engaged, I could have easily avoided the collision. The car not only did not decelerate, it accelerated down the hill while the brakes were locked for several seconds. My vehicle eventually slid into another vehicle that had been parked on the side of the road. From doing extensive research I believe a perfect storm of events caused this malfunction. Previously on this day, several inches of snow had fallen. The road had not been plowed and cars were parked on the side of the road. There was also a curve in the road near my vehicle's collision where the other vehicle was parked. My windshield was also still defrosting in the uppermost section near the rear view mirror. It is also possible the radar block on the front of the vehicle had snow or ice on it. It was also actively snowing. From what I have read, any of the above factors can cause a malfunction in the emergency braking pre-collision system. I had never been in an accident in over 20 years of driving and my vehicle did the least safe maneuver it could have in the given situation. There is no circumstance where one would purposefully slam the brakes on a snowy/icy down hill road if they know how to drive in the snow (even if you were going under 10mph as I was). At the most basic level of failure, I can't imagine this system should ever engage if going as slow as I was. Also, the system is designed to decelerate (was accelerating) and I was pumping brakes in effort to disengage

Filed Jan 29, 2026 · Airbags, Driver assistance · 4,000 miles · CA · crash · 4 injuries

The contact owned a 2025 Toyota Tacoma. The contact stated that while driving approximately 75 MPH, a Semi Truck attempting to merge onto the highway crashed into the passenger side of the vehicle, causing the driver to lose control of the steering and cross three lanes of traffic before crashing into the concrete median. During the crash, no air bags in the vehicle deployed, the collision avoidance systems did not operate, and twelve error messages were activated, including a brake error, a Four Wheel Drive error, and an ABS error. The driver sustained a concussion from the head contacting the steering wheel and lacerations from shards of glass entering the vehicle during the crash. The front seat passenger sustained lacerations to the legs and arms, the rear driver side passenger sustained fractured ribs and lacerations to the arms leg, and face. The rear passenger side occupant sustained lacerations to the arms and legs. All occupants in the vehicle were transported to the hospital with injuries, along with the semi-truck driver. No further information was available. A Police report was taken, and the vehicle was towed away. The manufacturer and local dealer were notified of the incident. A representative from the manufacturer was sent to inspect the vehicle and deemed no failure had occurred. The vehicle was destroyed. The failure mileage was 4,000.

Filed Dec 15, 2025 · Brakes, Electrical · AZ

On June 20, 2025, my 2023 Toyota Tacoma (VIN [XXX] ed a sudden loss of effective braking during normal driving conditions (dry roadway, clear weather). The vehicle was being driven by my adult son. While slowing for a turn, the instrument cluster displayed a Pre-Collision System (PCS) malfunction warning and a Vehicle Stability Control (VSC) warning. The Driver applied the brake pedal continuously, but the vehicle did no decelerate as expected. ABS did not activate, and braking effectiveness was insufficient. During braking, the driver experienced reduced steering responsiveness. In order to avoid entering a busy roadway without adequate braking capability, the driver applied maximum steering input, fully loading the left side of the steering wheel with as much force as possible in an attempt to redirect the vehicle. Any reduction in speed occurred primarily due to the change in direction and tire to road friction, not effective braking. The vehicle was towed to a Toyota dealership. Dealer intake records document a PCS warning and no brakes upon arrival. Event Data Recorder (EDR/CDR) data shows continuous brake pedal application for approximately 5 seconds prior to the event, accelerator at 0%, and brake system hydraulic pressure reaching approximately 12.14 MPa (maximum recorded). Despite this, the vehicle did not stop as expected. No frontal crash pulse recorded. Toyota Motor North America later denied responsibility, asserting incorrect vehicle speed and stating that a CARFAX report indicated prior front-end damage. The CARFAX vehicle history report, dealer purchase disclosures, and service records show no reported accidents or damage. Toyota declined to provide brake system ECU logs (ABS/VSC/brake control modules). This incident raises concerns regarding a potential safety defect involving electronically controlled braking and its interaction with PCS stability control systems. Supporting documentation available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5

Filed Oct 20, 2025 · Driver assistance · MT · crash

While driving on a dry, clearly marked two-lane highway in Montana, I had Lane Tracing Assist and Active Lane Keep/Track Assist turned on. My hands were on the steering wheel, speed was within the limit, and visibility was clear. The truck unexpectedly steered itself out of the lane toward the right-side guard rail. There were no audible or visual lane-departure alerts, no “steering assist canceled” message, and the Pre-Collision System did not apply braking before impact. The vehicle struck the guard rail. The system failed on multiple safety layers — no lane warning, no steering correction, and no automatic braking — under normal conditions (dry pavement, well-painted lane lines, daylight). I believe this represents a malfunction or defect in the driver-assist software or sensor calibration for Toyota Safety Sense 3.0. I request the federal safety agency investigate similar incidents for 2024–2025 Toyota Tacoma models equipped with LTA/LDA and Pre-Collision System to determine whether a systemic defect exists.

Filed Sep 27, 2024 · Driver assistance · CA

i notice that every time i pass a tunel or under pass the automatic braking assist activate it will make suden brake is that normal. some times the forward collision warning will triger alarm sound end it will brake by it self.

Filed Sep 12, 2024 · Driver assistance · 2,000 miles · FL

The contact owns a 2024 Toyota Tacoma. The contact stated while driving at an undisclosed speed, the Forward Collision Avoidance feature activated erroneously. The contact stated that the vehicle came to a complete stop. The contact stated that there were no vehicles nearby. The vehicle was taken to the dealer; however, the vehicle was not repaired. The contact was informed of a potential software update. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 2,000.

Filed Dec 14, 2023 · Driver assistance, Electrical · PR

Display a message in screen "Pre-Collision System Malfunction", lost power and start blinking light in cluster