As I was driving my check engine light turned and also another message saying -??Drive-Start control malfunction-??. A few second after another light came one showing -??Engine coolant Temp high. On 11/24/24 I experienced this mechanical failure as I was driving. I was driving behind another car, where my car suddenly lost power and randomly accelerated almost causing me to crash behind the car in front of me. Thankfully I had time to press on the brakes to prevent me from crashing. I also did some research to see if other drivers also experienced this fault and seems that a lot of people with these Toyota Corolla and RAV4 models. I also found that an active lawsuit is ongoing against Toyota regarding this same issue. This definitely should be something that needs to be recalled as it puts our lives at risks to either crash or even catch on fire due to overheating. My vehicle gets serviced regularly.

- Orlando, FL, USA

I got a -??Engine Maintenance Required-?? warning message. I check with the dealer and upon diagnosis told me about a faulty coolant bypass valve which is a common problem for Toyota RAV4 and Corolla. The Toyota Mechanic mentioned that this should have been a recall issue. The cost to repair was unbelievable considering it will take only a short time to do. BOught the parts and will have it installed somewhere where the labor is cheaper. Since it is a common problem, the manufacturer should recall this issue, replace the faulty part and pay the cost of everything.

- Fullerton, CA, USA

The coolant bypass valve failed in my car causing -??engine maintenance required-?? message but no CEL code. Took it to the dealership where they determined failed component and replaced it. The car only had about 71,000 miles and with a engine cooling system failure it could potentially cause further damage.

- Dublin, CA, USA

The alert for the Bypass Coolant Valve came on and cost $800 to replace. As this is a common issue across multiple Toyota models, this should be a recall.

- College Station, TX, USA

My car has warning light of the engine maintenance required and I had to change my electrical water pump when I first got the car and the dealership doesn-??t cover the issues

- Garden Grove , CA, USA

Coolant bypass valve failed

- Memphis, TN, USA

Engine coolant bypass valve

- Spartanburg, SC, USA

At around 36,500 miles, my Toyota Corolla began experiencing issues with the coolant bypass valve, leading to engine overheating. This malfunction has significantly impacted my ability to drive safely, as the vehicle displays a notification every five seconds, obstructing my view of the digital speedometer and making it difficult to accurately monitor my speed. The issue was not indicated by a check engine light but a persistent "Engine Maintenance Required" message. This defect poses a serious safety risk, and there's a potential class-action lawsuit in progress regarding this very issue, suggesting Toyota might have known about the defect but failed to disclose it. The faulty component is not available for inspection upon request. As more people began to experience similar circumstances, it could lead to fatalities. Other participants to the forums says the issues start when their covered warranty expires. Within these forums there's a inconstancy of service centers honoring fixes, with no cost, knowing that there is an issue. I took the car to both a third-party mechanic and an authorized dealership, and both confirmed the problem. I was quoted $732.85 for the parts and labor within my area. I also called Toyota Global which I was told "a low mileage car shouldn't be having this issue", however, there are countless of forums saying otherwise. **Toyota Models Affected** 2019 Toyota RAV4 2020 Toyota RAV4 2021 Toyota RAV4 2022 Toyota RAV4 2023 Toyota RAV4 2019 Toyota Corolla 2020 Toyota Corolla 2021 Toyota Corolla 2022 Toyota Corolla 2023 Toyota Corolla [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- San Mateo, CA, USA

I am up to date with all my maintenance but at 67k miles I had a message stating -??Engine Maintenance Required-?? message on my dashboard. I took it to the dealership and they identified the cooler bypass valve needed to be replace, apparently this is a common issue and has not been addressed by Toyota. Plus it-??s difficult to find the part that needs to be replaced. There was no check engine light, and everytime I turned on the AC the engine maintenance required message would pop back up. If this is a known issue Toyota needs to make this issue public and parts available.

- Montclair , VA, USA

I got a -??Engine Maintenance Required-?? warning message. I check with the dealer, the dealer inspected and told me about a faulty coolant bypass valve which the dealership told us a common problem for Toyota RAV4 and Corolla. The dealer did a diagnostic and found that engine coolant bypass valve circuit short to battery - (P268115). They asked me to order the part. A faulty coolant bypass valve risked my vehicle of a failure of the cooling system and so the engine. I had to pay $113.40 for the diagnostic and $331.75 for repair. Since it is a common problem, the manufacturer has to recall and replace the faulty part and pay the cost of the part and labor for replacing the faulty part.

- Clinton, SC, USA

Coolant bypass valve is faulty and a lot of people have had this issue. Toyota is well aware of the faulty part and it affects many models and years of cars. They want to charge 800 bucks for an easy fix. It is robbery and could be a big safety hazard if it causes engine to stall while driving

- Vero Beach, FL, USA

All of sudden the Engine Maintenance Required sign popped up on the screen during when I was driving. The sign popped up every time I turn on the car. I took the car to Toyota service immediately and diagnostic showed it was Engine coolant bypass valve circuit short to battery or open.

- Huntington Beach, CA, USA

* What failed was engine coolant bypass valve. * Safety was at risk as the failure can lead to engine overheating over time. * it has been reproduced by countless others after their vehicle hits 30k to 70k. *there was a message on the dash about -??engine issues and to take to dealer-??

- Fort Myers, FL, USA

Engine Coolant Bypass Valve faulty. Charged $176.95 for the dealer to diagnose what is already known issue. The dealer wanted $663 to replace the part. Toyota knows about this issue yet acts like they had to perform $176 diagnose. The car never blew any codes CIL and they say that this particular part doesnt cause a code but had to use a " special" diagnose tool.

- Oxford, GA, USA

My service engine came on took to dealership they said my coolant bypass valve no good and iam always have to change out my brake pads on the front

- Warrenton , GA, USA

Engine coolant bypass valve circuit short to battery or open - code P268115 Engine maintenance alert light appeared after (a day after, and then would not be on, and sometimes turn on, erratic maintenance message) I brought car in for scheduled engine maintenance per Toyota. The Toyota technician advised me to immediately take care of it but does not have the part in stock. This is the Toyota Dealer service in Manhattan Beach, CA.

- Santa Monica, CA, USA

Engine maintenance came on, took it to dealership and was told the diagnostic test showed coolant bypass valve. Apparently this is a recurring issue and if not taking care of, it could cause major problems. I was told the part is $200 plus and labor is $500 plus. This should be a recall issue and fixed free of charge by Toyota. In doing a google search, several complaints are listed regarding this issue. The gentleman at the dealership where I took my car stated he has done several vehicles recently with this issue. I don't think use as a customer should have to pay for this known issue by Toyota. I'm also still waiting to get the recall fixed on my mother's Toyota rav4 recall which I received notification on back in early 2023. Their excuse is not parts available. So in the mean time, if the vehicle catches fire, they say oh well. I am over Toyota getting away with this.

- Seffner , FL, USA

4 years after production with approx 44k miles the car began displaying the message -??engine maintained required visit dealer-?? after investigating discovered coolant valve was the issue. Problem seems to be a common occurrence with the model car for other owners.

- Lakeland, FL, USA

The vehicle began to go up and down in revolutions per minute (RPM) while at a traffic light or stop sign.

- Panorama City , CA, USA

Coolant bypass valve failed prior to car driving 50,000, confirmed by dealership. Failure can cause electrical issues. Car indicated engine maintenance required

- Long Beach, CA, USA