Was insinuating engine was over heating even in -4? weather has no hot air plenty of coolant. This is causing the vehicle to "buck" amd having to have to pull over and waiting several minutes to let the engine "cool off" I can make it about 3 miles in-between pull overs. After some research I feel like the issue falls under a current lawsuit against Toyota regarding the coolant valve based on reading other issues and what my rav is doing. It is a several thousand dollar fix through a dealership and one my family can not afford especially if it is a poorly manufactured part of the car. It is one of two vehicles we have and need to daily living especially having a child and no means yo offered another safe vehicle at this time. The coolant pump itself

- Springfield, VT, USA

My 2019 Toyota RAV4 Hybrid (VIN: [XXX] ) suffered sudden engine failure due to coolant intrusion. On Nov 20, 2025, Johnstons Toyota in Harriman, NY (RO#XXX) diagnosed the issue and recorded DTCs P26CA31 and P26CB, which indicate failure of the coolant flow control/bypass valve. The dealer confirmed heavy white smoke from the exhaust with a strong coolant smell and advised the engine had failed, recommending a replacement. This vehicle is part of the early 2019 Japan-built batch widely known for premature electric water pump and coolant-flow system failures. Internal impeller swelling, seal leakage, and bearing seizure can cause coolant pressure spikes and ultimately head-gasket failure with coolant entering the cylinders. This defect has been reported by thousands of RAV4 Hybrid owners (2019-?"2021). Toyota has addressed it quietly through internal TSBs such as XXX and XXX but no public recall has been issued. The safety risk is severe: the engine began emitting thick white smoke and ran roughly, risking sudden power loss, overheating, or engine seizure while driving. A stall at highway speed could easily cause a collision. Toyota USA opened Case #XXX but declined assistance despite the defect being well documented. This failure was sudden, with no warning lights prior to the incident. Given the widespread nature of this defect and its clear safety implications, I request that NHTSA open a formal investigation into the electric water pump/coolant system failures in 2019-?"2021 Toyota RAV4 Hybrids and consider requiring a safety recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Middletown, NY, USA

Stopped for gas on 11/6/2025 immediately after getting gas the truck shook twice, the power steering light and engine shut down light came on and the truck turned off. Waited for a few minutes to turn the engine again it wouldn-??t start. Got it towed to my nearest dealership who kept it for a day. Said there was nothing wrong with the truck, there was no code showing and they couldn-??t determine the cause of the problem.

- Bartlett, TN, USA

I stopped for gas; my car would not start. The power steering fluid light came on. I went inside to purchase some but when I returned to the car, there was no place to pour it. After a few minutes the car started. About a month later, my husband stopped for gas and the car killed right after he left the gas station, about 10 minutes later, it started. Took it to a mechanic, they couldn't find anything wrong with it because the check engine light wasn't on and the car wasn't giving any problem codes. About two weeks ago, I stopped for gas, the car wouldn't start. Finally got it started, and the check engine light came on. However, it's still not reading any codes.

- Venus, TX, USA

The car transmission hesitates to accelerate at slow speeds and jerks or lurches forwards in a uncontrollable way. Dangerous at stop signs or on slow or hilly roads. Dealership does not directly acknowledge this issue, despite mechanic mentioning very clearly it is related to T-SB-0107-19 which Toyota dealerships charge to repair. No warning messages. Issue has existed as long as I have owned the vehicle 1.5 years from 61,000 miles to 71,000 miles.

- San Clemente, CA, USA

Vehicle states engine maintenance required. Is a consistent reoccurring problem according to dealer. System failure due to manufacturer always puts the user at risk.

- Statham, GA, USA

Cooling System over Temperature. Message kept displaying and check engine lit up again since the first service was done by Tech at the dealership on July 15, 2025.

- Springfield, VA, USA

Got brand new transmission put in then right after the Coolant leak started into cylinder number 2

- Coraopolis, PA, USA

2019-2023 model year Toyota RAV4s and Toyota Corollas are equipped with defective coolant bypass valves prone to premature failure which can cause coolant to leak out of a vehicle-??s closed-loop coolant system, harming its ability to properly regulate engine temperature. This can cause overheating, stalling, increased emissions, and total engine failure and also allows coolant to leak into and damage surrounding engine components, including a vehicle-??s electrical system, the complaint relays. The warning message that common appears for this issue is "Engine maintenance required Visit your dealer "

- Colorado Springs, CO, USA

The engine maintenance light came on and I took the car to my independent mechanic. The "soft code" indicates that the coolant system valve/hose (engine coolant bypass valve) is showing in the closed position when it should be open. My mechanic has tried to order a replacement part, but is having trouble finding one. After my personal research, I see that there is a Class Action Lawsuit regarding this part from 2024 indicating that it can cause the car to overheat, stall, and potentially severe engine damage. Toyota has no formal recalls on this, but it has been indicated that some owners have received support from Toyota on models built up to 2021.

- Baltimore, MD, USA

The water pump failed at 49000 miles left me with a repair of $1500 at Kendall Toyota dealership

- Miami, FL, USA

I am submitting this complaint regarding a recurring issue in the coolant bypass valve of my 2019 Toyota RAV4 XLE Premium. Although there was no check engine light, the vehicle displayed a persistent warning: -??Engine Maintenance Required -?" Visit Dealership.-?? This message repeatedly appears on the instrument cluster and blocks critical driving information, including the speedometer, fuel economy, and other key displays. Even when the driver manually cancels the message, it returns within minutes. This creates a constant distraction and obstructs visibility, which poses a safety risk during driving. I took the vehicle to the dealership, where they diagnosed the issue as an internal short circuit in the coolant bypass valve and retrieved diagnostic trouble code P268115. This code relates to a malfunction in the valve-??s electrical control system, which affects the engine-??s ability to regulate temperature effectively. Toyota currently offers a Customer Support Program (CSP) for the coolant bypass valve, but only if the valve is leaking coolant. However, my vehicle's failure was due to an electrical defect, and Toyota does not cover this under the same program. This creates an unfair burden on owners and fails to address the full scope of the issue, even though the results-?"loss of proper cooling function-?"are the same. Many RAV4 owners have reported similar problems online, but no recall or technical service bulletin has been issued for this kind of failure. I believe this defect raises genuine safety concerns, including: Driver distraction due to persistent warning messages Obstruction of critical dashboard information Potential for engine overheating or reduced performance I respectfully request that NHTSA investigate this issue as a potential safety-related defect and determine whether Toyota should be required to expand support or issue a recall for this component, regardless of whether the failure is due to coolant leakage or internal electrical malfunction.

- Brooklyn, NY, USA

7/16/2025 Engine Maintenance Required Visit Dealer" message on a 2019 Toyota RAV4 LE came on and will not go off. Upon further research and inspection coolant bypass valve is faulty.

- Milwaukee, WI, USA

Scan Report done ! odometer 25266.Engine coolant bypass valve "A" control circuit failed test. Engine Control Module Code P2681-15. Message: factory service require !

- Toa Baja ,Puerto Rico, PR, USA

The vehicle began displaying intermittent warning messages and slipping into "Mud & Sand" mode without cause. Later, multiple dash lights illuminated, including 4WD malfunction, check engine, and coolant system warnings. The vehicle became undrivable due to overheating. Dealership diagnostics indicated a failure in the coolant bypass valve actuator the electronic water pump was receiving a signal but not responding, resulting in loss of coolant circulation and overheating. There may also be a shorted control panel causing related system failures. This problem has been confirmed by a Toyota dealer, and the vehicle remains at the service center pending resolution. The issue appears related to a known Customer Support Program (CSP 24TE04), which covers the coolant bypass valve actuator. There was no prior accident or abuse of the vehicle, and the vehicle only has 52,000 miles. Safety was compromised due to unexpected power loss and overheating while in motion. The issue has not yet been resolved. The vehicle has also experienced prior water intrusion through the roof rails, which may have contributed to electrical damage.

- Philadelphia, PA, USA

Started normally, but had a message on the screen saying -??Check Fuel Cap.-?? I needed gas anyways, drove about 3 minutes to the gas station, turned engine off, put gas. Turned engine back on and within 3 seconds it shut off. The screen displayed -??engine stopped- Power steering low.-?? I tried a handful of times to start, it did not. After 20 minutes and some rest, it started. With no more messages. Battery and alternator were tested, both were good.

- Church Point, LA, USA

Faulty coolant bypass valve at 115,000 miles. Seems to be a repeat issue for many Toyota owners. Not covered by the powertrain warranty, but a known issue by the manufacturer.

- Jacksonville, FL, USA

The Engine Maintenance required light comes on when I use the air conditioner. I suspect the coolant bypass hose is not working properly.

- Palmetto, FL, USA

Check engine light came on and code P268115 was shown for coolant bypass valve internal failure. Valve was replaced by dealership and I was told it would not be covered under the Toyota Customer Support Program because that only covers valves that leak externally, not internal failures.

- New River, AZ, USA

Coolant bypass failure

- Albuquerque, NM, USA