2026 Toyota RAV4 Plug-In Hybrid: check engine light

Filed Nov 6, 2026 · Electrical, Transmission · MA

On November 5, 2026, my 2026 Toyota RAV4 Plug-in Hybrid XSE, with approximately 1,484 miles, experienced a sudden reduction in acceleration capability while merging onto a highway at approximately 30–40 mph. When attempting to accelerate, the vehicle felt as though engine braking was occurring, and multiple warning indicators appeared on the dashboard, including the check-engine light and a “System Malfunction — Visit Your Dealer” message. Several driver-assistance system warnings were also displayed. The vehicle was able to maintain speed, but acceleration was noticeably reduced. I deliberately maintained a steady speed and avoided further acceleration out of concern for potentially damaging the vehicle. This created a significant safety risk because the vehicle could not accelerate normally while merging into highway traffic, potentially exposing me and surrounding motorists to a collision. On October 8, 2026, the vehicle underwent a Toyota recall-related ECU software update. Less than one month later, the vehicle experienced this loss of acceleration capability. I am concerned that the malfunction may be related to the condition addressed by the recall, although the underlying cause has not yet been determined. The vehicle was driven directly to a Toyota dealership and dropped off on November 5, 2026, at approximately 5:30 PM. The vehicle remains at the dealership awaiting diagnosis and is available for inspection. As of November 6, the dealership has not provided diagnostic findings or confirmed the cause of the malfunction. The specific failed component is currently UNKNOWN. I am submitting this complaint because unexpected loss of acceleration during highway merging presents a serious safety hazard, particularly in a nearly new vehicle that recently received a recall-related software update.

Filed Nov 6, 2026 · Electrical · 6,000 miles · NC · crash · 1 injury

The contact owns a 2026 Toyota Rav4 Plug-In Hybrid. The contact stated that while driving at an undisclosed speed, the vehicle shut off unexpectedly. The vehicle was restarted. The failure recurred while turning to the right on another occasion. The contact was able to maintain control of the vehicle, and the vehicle was restarted. The contact stated that while driving out of the driveway, the failure recurred. The failure became constant. The manufacturer was notified of the failure and dispatched a tow truck to transport the vehicle for an inspection. The dealer reached out to the contact and stated that a system was reprogrammed, and a recall repair was performed. However, days later, the failure reoccurred, and the check engine warning light illuminated. While driving on the highway, the vehicle shut off and was towed to a dealer, and the contact was informed that an oil change was needed. The contact stated that the vehicle turned off again on another occasion before crashing into another vehicle. The vehicle was taken back to the dealer, and a diagnostic test was pending. The contact sustained whiplash and back pain. Medical attention was required. The failure mileage was 6,000.

Filed Aug 10, 2026 · Engine, Fuel system · VA

On XXX, my wife, who is [XXX] pregnant, was driving our brand new 2026 Toyota RAV4 Plug-In Hybrid (approximately 20 miles on the odometer) at 45 mph on a highway when the vehicle experienced a sudden loss of propulsion. What failed: The hybrid powertrain system shut down while the vehicle was in motion. The instrument cluster displayed "Hybrid System Malfunction Do Not Tow This Vehicle" along with check engine light / a multitude of other warnings. The vehicle lost all propulsion and would not restart. The vehicle is available for inspection upon request and is currently at a Toyota dealership. Safety risk: The vehicle lost motive power in active traffic on a 45 mph roadway. My wife was forced to coast to the shoulder with traffic approaching from behind. Sudden loss of propulsion at highway speed created a substantial risk of a rear-end collision and serious injury to my pregnant wife and our unborn child. Reproduction/confirmation: The vehicle was flatbed towed by Toyota Roadside Assistance to an authorized Toyota dealership, where it is being diagnosed. Other inspections: A case has been opened with the Toyota Brand Engagement Center. Police and insurance have not inspected the vehicle. Prior warnings: There were no warning lamps or symptoms prior to the failure; the warnings appeared simultaneously with the loss of propulsion. I am aware of at least two other publicly reported incidents of 2026 RAV4 Plug-In Hybrid vehicles displaying hybrid system malfunction warnings or losing power at under 2,000 miles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 2, 2026 · Electrical, Engine · NY

Purchased brand new vehicle. At the time of incident vehicle had 168 miles. I was driving approximately 20 miles per hour on a parkway entrance ramp with no vehicle in front of me and no vehicles approaching from behind. I accelerated gradually to merge onto the parkway. The engine kicked and the dashboard lit up with several warning indicator lights including the check engine light (see attached images). The dashboard also had the following messages displayed “ system malfunction visit your dealer, drive start control malfunction visit your dealer, AWD malfunction 2WD Mode engaged visit your dealer, check engine visit your dealer, hybrid system malfunction visit your dealer, hybrid system malfunction output power reduced, visit your dealer”. I was able to drive the vehicle home about 1 mile. Called pickup truck and had vehicle towed to dealer. Dealer kept vehicle for 6 days. In that time dealer was in communication with Toyota headquarters. On the 6th day, a mechanic from the service department called and said the vehicle was ready for pick up. When I asked why this occurred, the only thing they could attribute the incident to was the brand new battery was slightly low.

Filed Jul 20, 2026 · Electrical, Fuel system · LA

On 7/7/2026, while driving on a local road at under 600 miles from purchase (590 on odometer), the dashboard displayed a warning that something was critically wrong and instructed the driver to pull over immediately. Once pulled over, the vehicle lost the ability to shift and became fully inoperable. Multiple alerts triggered simultaneously: Drive-Start Control System, AWD System, Check Engine, Integrated System Warning (TSS malfunction), and Hybrid System. The vehicle would not power on for 15-20 minutes, after which it powered on with some functionality restored (possibly an internal reboot), though alerts remained present. It came to rest partially obstructing a live traffic lane with no ability to move further off the road, creating a collision risk. Vehicle was flatbed towed to the dealership. Dealership held the vehicle one week (7/7-7/14). Technician confirmed alerts were genuine but could not reproduce the fault after ~38 miles of test driving. Only historical communication codes detected; no active diagnostic trouble codes (DTCs) present. Vehicle was returned with no repair and no identified cause. Unsure if dealer service center contacted Toyota engineering for help. This is the second distinct electrical/software anomaly in ~5 weeks. On 6/18/2026, the traction battery dropped to 0% overnight despite being securely plugged in at 63%; the rear liftgate was also found open unexpectedly. This resolved on its own; vehicle was not serviced. Vehicle is available for inspection.

Filed Jun 19, 2026 · Transmission · CA

I purchased this 2026 Toyota RAV4 Plug-In Hybrid about two weeks before this incident. It had approximately 170 miles at the time. While driving at approximately 50 mph, it suddenly decelerated as though braking (without me pressing the brake pedal) and would not accelerate when I pressed the accelerator. At the same time, these warnings appeared: “Hybrid Startup Malfunction,” “Hybrid System Malfunction,” “AWD Malfunction,” “System Malfunction,” and “Check Engine.” I stopped safely and powered the vehicle off and on. After the first restart, the display did not show the odometer reading or battery percentage, although the battery charge bar remained displayed. After a second power cycle, both reappeared. The vehicle then drove normally, but the Hybrid System, System Malfunction, and Check Engine warnings remained. The Hybrid Startup and AWD warnings had cleared. The vehicle had not been repaired or serviced since purchase. I have never boosted or jump-started its 12-volt battery. An authorized Toyota dealer performed initial checks, found no error codes, and could not duplicate the failure. The dealer said another customer’s 2026 RAV4 reportedly had a similar issue weeks earlier. They test-drove that vehicle about 150 miles without reproducing it and ultimately reset its warnings. This was sudden, uncommanded deceleration and loss of acceleration while moving. Loss of propulsion in traffic, especially at speed, creates a risk of a rear-end collision or inability to maneuver to safety. The vehicle is available for inspection, and dealer records are available. In the days before this event, once or twice daily during normal driving, the vehicle displayed a blue message stating “Accident detected, recording started,” despite no collision or driver input. The vehicle has never been in an accident. I do not know whether this is related, but it may be relevant to an electronic, sensor, or control-system fault.

Filed Jun 19, 2026 · Transmission · CA

I purchased this 2026 Toyota RAV4 Plug-In Hybrid brand new, about two weeks before this incident. At the time of the incident the odometer read approximately 170 miles. While driving at about 50 mph, the vehicle suddenly decelerated as though braking (without me pressing the brake pedal) and would not accelerate when I pressed the accelerator. At the same time, these warnings appeared: "Hybrid Startup Malfunction," "Hybrid System Malfunction," "AWD Malfunction," "System Malfunction," and "Check Engine." I stopped safely and powered the vehicle off and on. After the first restart, the display did not show the odometer reading or battery percentage, although the battery charge bar remained displayed. After a second power cycle, both reappeared. The vehicle then drove normally, but the Hybrid System, System Malfunction, and Check Engine warnings remained; the Hybrid Startup and AWD warnings had cleared. The vehicle had not been repaired or serviced since purchase. I have never boosted or jump-started its 12-volt battery. An authorized Toyota dealer performed initial checks, found no error codes, and could not duplicate the failure. The dealer said another customer's 2026 RAV4 reportedly had a similar issue weeks earlier; they test-drove that vehicle about 150 miles without reproducing it and ultimately reset its warnings. This was a sudden, uncommanded deceleration and loss of acceleration while moving at highway speed. Loss of propulsion in traffic, especially at 50 mph, creates a risk of a rear-end collision or inability to maneuver to safety. The vehicle is available for inspection, and dealer records are available. In the days before this event, once or twice daily during normal driving, the vehicle displayed a blue message stating "Accident detected, recording started," despite no collision or driver input. The vehicle has never been in an accident. I do not know whether this is related, but it may be relevant to an electronic, sensor, or control-system fault.