"Engine maintenance required. Visit dealer" message appeared about 2 years ago. The message appears when I turn on the A/C or heater and will not go away, which affects multiple functions such as speedometer and text function.

- Pomona, CA, USA

Engine coolant leak from an issue with a valve that allows coolant to drip on other parts of the vehicle. -??Engine Maintenance Required-?? is displayed on the instrument cluster and causes the A/C to not function normally.

- Helendale, CA, USA

I keep getting a warning sign on my dashboard stating that "Engine maintenance required. Call your dealership". After scanning for codes, I get the code P2681, or that the Engine coolant bypass valve is faulty. After looking online it appears that this is a common issue with this car model. There is a class action lawsuit for this right now since the part is known to be faulty and can crack and leak engine coolant. Toyota has refused to issue a recall for this and will charge you to replace this faulty hardware. I also am not able to clear the message while driving and it will constantly pop back up distracting me while driving and making me unable to see any important warning on my dashboard. This is endangering my ability to safely drive my vehicle.

- San Antonio, TX, USA

There was a maintenance required notice on my dashboard and I searched up that it was my coolant bypass valve having an issue. Apparently it-??s a defective part in Toyota Corolla and rav4 models from 2019-2023 I believe. The notice would come on and off each time I would start the vehicle. The dealership has confirmed this issue is common and after having it inspected and diagnosed, it was indeed the coolant bypass valve. My safety and the safety of others were fine, my engine would-??ve been the unfortunate casualty if I did not take care of this.

- Los Angelss, CA, USA

Car would not start/turn over - Not battery related. Toyota determined the ECU went bad and stated the cause was improperly jumping the battery. The issue happened randomly one day (car was driving fine previous days)

- Magnolia, TX, USA

There is a problem with the bypass control heater valve of my car Corolla Toyota 2020 It says i have to replace it but it's still running good. I research what this part is about and it says that this is a malfunction in all the Toyota Corollas and RAV4 2019-2021. The message "engine maintenance required" doesn't go away and it doesn't let me see the mile percentage when driving. This problem has been confirmed by a mechanic who installed the tablet and run a test to see what's wrong with it. The car has not been checked by insurance because of this manufacturer malfunction. This all started happening 6 months ago and haven't found a way to replace it and dealership charges over 800 dollars for a mistake Toyota made on all Corollas line. Please help me find a solution. Thank you!

- Del Rio, TX, USA

Vehicle was brought to Toyota because of "Engine Maintenance Required" message. We initially thought it was "Maintenance Required" so husband said we may need to change the oil, but it was only a few thousand miles since last oil change. I tried to remove the message but the Toyota Manual did not have any instructions on the "Engine Maintenance Required" message removal. When he left Toyota after changing oil, same message was on dashboard. Husband went back to Toyota and asked them to remove the "Engine Maintenance Required" and was told that there is a coolant bypass valve that must be changed in order for the message to go away. The cost should be around $1,000 and then proceeded to tell him he needed to buy new tires as well. All would total about $2,800. Vehicle has 58K miles and we are afraid to drive the vehicle now until we know what is actually wrong with it. It's suspicious to read all the complaints describing the same situation we have with Toyota. By the way, after we were told about the needed repair, I started getting emails from Toyota about purchasing a Toyota warranty, advertisements in the mail from car warranty companies and phone calls from Toyota salespeople to come and buy/lease a new Corolla and I would get a "great deal"! Is this some scam to generate business" Are Toyota owners being subjected to a "bait and switch" scam" I would like an investigation initiated by your agency. My vehicle is available upon request and our safety is at risk because we truly don't know what is wrong with it and afraid to drive it any longer. If your agency wants to read complaints from other owners, I direct you to read the complaints on [XXX] or Google "Toyota Engine Maintenance Repair" message. It's very much an eye-opener about fraud being perpetrated by Toyota. I can provide any documentation needed when I am personally contacted and requested to furnish them. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Royal Palm Beach, FL, USA

My 2020 toyota corolla's warning light which stated "engine maintenance required visit your dealer" came on. When I called the dealership they stated I would need to come in and hook it up to diagnose the problem which would cose me $185 + taxes and fees. Then once diagnosed they would be able to fix the problem. I checked with O'Reilly's autopart store and Autozone which both of their scanners found nothing wrong. So I informed Toyota and they stated they I need to bring it to them because their scanner/tool is the one which will tell us what the problem is specific to my car. But they stated they think it could be a hose related to my coolant system to prevent my car from overheating. They stated to watch the temperature gauge while driving as it may overheat and become dangerous to drive. If this happens or I see any smoke pull over and get out if the car. However they haven't seen anyone have to do this so they think I should be fine but I should fix this problem soon. I asked if that is the problem would it fall under my mechanical breakdown insurance coverage and the dealership stated that if that's the problem yes but if I go through the insurance it will take a really long time to fix because they'd have to file a claim and get paid before doing any repairs. Then they said I'd have to pay the copay and any difference. I was confused as my insurance states I only have to pay my copay. However, I had someone else with a scanner/tool hook theirs up and to see if we could check the actual problem and it did say the error code P268115 engine bypass coolant valve. So, this was the issue. I viewed online that there is a class action lawsuit going on right now for this same problem with 2019-2023 Toyota Rav 4 and Corolla's. Toyota failed to disclose this information to it's consumers and it is not being covered under the power train warranty either. This safety issue with cars overheating is dangerous and costly.

- Aiea, HI, USA

Coolant/oil bypass valve. Warning issued Sept 24th. I understand 6000 complaints have been filed with this vehicle model under 30,000 miles

- Blue Island, IL, USA

Getting engine maintenance required, coolant valve failed for no reason.

- Saint Paul, MN, USA

The engine Coolant Valve is leaking coolant, in ordering a new part to replace so yes it-??ll be available for inspection. My car Could overheat leaving me or my riders stranded wherever it is that the car stops. I went to Tires plus and they said I had to swap it out but I refuse to go to Toyota so they can rob my money The part has not been inspected by manufacturer, police, or insurance, The only symptom is my coolant runs low sometimes and my engine maintenance screen won-??t go away

- Lawrenceville, GA, USA

I have been a victim of a known defect in Toyotas Coolant Bypass Valve as of recent when approaching my 40000 mile service maintenance.

- San Antonio, TX, USA

Got an engine maintenance required light show up, took my car to the dealer to diagnose, they stated that i need to replace my coolant bypass valve

- Lakewood , CA, USA

Engine Coolant Bypass Valve has gone bad and presents a 'Engine Maintenance Required, see Dealer' error message.

- Phoenix, AZ, USA

Coolant bypass valve. Becoming persistent in several models of Toyota 2019-2021. Dealerships claim it-??s not covered under powertrain warranty because it-??s part of the coolant system. Should be covered and customer should be compensated or reimbursed.

- Englewood, FL, USA

The Coolant Bypass Valve on my Toyota Corolla 2020 is faulty. An "Engine Maintance Required" code appeared a couple months ago, when the vehicle was still under 60K miles. The vehicle is available for inspection upon request. A faulty coolant bypass valve can cause the engine to overheat or leak coolant, leading to potential breakdowns or accidents. It may also trigger warning lights and reduce cabin heating, creating further safety risks. Not confirmed by dealership/indepenent service center. Only confirmed by personal inspection. The vehicle/component has not been inspected by manufactuer/police/insurance representatives. "Engine Maintance Required" message appeared on digitial display of vehicle. Message does not appear when the vehcile is turned on while A/C system is left OFF, but upon turning on the A/C, the maintaince required message appears, indiciating a faulty bypass valve.

- Coweta, OK, USA

coolant bypass valve is defective and failed prematurely. coolant bypass valve cracks and leaks coolant. Once coolant beings leaking, it comes into contact with the electrical connector located near the valve. The coolant corrodes and damages the connector, which eventually causes connector to malfunction. This causes the coolant bypass valve to be stuck in the -??open-?? or -??closed-?? position (i.e. it no longer responds to the needs of the engine), restricting coolant flow and allowing the engine to overheat. I had to repair the vehicle at Harvey's Autotech 521 West Sixth Street Corona, CA 92882 (951) 737-9878 at the cost of $643.91and loss of a work day.

- Orange, CA, USA

I was driving in traffic when a warning light comes on it says "engine maintenance required visit your dealer". I have looked everywhere in the manual on this message and unable to find anything no other lights are on or anything to determine the issue. Took it to get checked at autozone no codes came up all is clear. I've read online this is a known issue to replace the coolant bypass valve. Unfortunately I take my vehicle to toyota for all oil changes etc and this was not mentioned.

- Chula Vista, CA, USA

Engine coolant Bypass Valve issue

- Ralston , NE, USA

Faulty coolant bypass valve needing repair. Manufacturer has open class action lawsuit. My car is also impacted.

- Pineville, NC, USA