Engine maintenance required. bypass coolant valve defected

- Sun Valley , NV, USA

coolant bypass valve issue under 60k miles.

- Phoenix, AZ, USA

The contact owns a 2020 Toyota Corolla. The contact stated while driving, at any speed, as the contact depressed the brake pedal to stop the vehicle would stop, however when the contact depressed the accelerator pedal the vehicle would move backwards with a jolt before moving forward. The contact stated that the failure was intermittent but had become recurring failure. The contact stated no warning light was illuminated. Additionally, the contact stated that an abnormal buzzing sound was coming from the engine compartment. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed and was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 131,000.

- Schulenburg, TX, USA

The contact owns a 2020 Toyota Corolla. The contact stated while driving at undisclosed speeds, the check engine warning light was illuminated and flashing. The contact stated that the vehicle was not accelerating above 30 MPH. The vehicle was taken to an independent mechanic where it was diagnosed with a rocker arm actuator system performance failure and several other unknown failures. The vehicle was not repaired. The contact discovered the Technical Service Bulletin: 0098-19; however, it was not verified if the vehicle was included. The manufacturer was not made aware of the failure. The failure mileage was approximately 119,000.

- Washington, DC, USA

Coolant bypass valve failed at 52k miles.

- Sebring, FL, USA

The Engine Coolant Bypass Valve Short in the vehicle has malfunctioned. This appears to be widespread issue not only in the Corolla, but in the Camry and RAV4, and appears to affect model years 2019-2024. This issue caused coolant leakage, has the potential to cause issues with the engine, and affects the A/C/Heating systems as well. There were no warning signs prior to the failure, and the car had just passed a multi point inspection 4 days prior to the failure. The problem has been reproduced by my local Toyota dealership.

- Monroe, NC, USA

At 4 years and 1/2 old car 2020 Corolla XSE an Engine Maintenance Required SEE DEALER light turned on. Did diagnostic with OBD 2 scanner at two locations auto body shop and Uto zone. Nothing appears. It is in fact a NEEDED future recall since thousands if not more people have encountered the same. It is a Coolant By Pass Valve. Cost is only $99.53 + tax at dealer. Problem is that should be under warranty or extended warranty or recall. Dealer likes to charge $800 (180-200 for diagnostic, $110 part, $400 labor. Part only takes 30 minutes to install. I should be able to buy at dealer for $110 and have them install for free or pay 30 minutes of work time = $85. 1 hour is about $175. So instead of trying to be billed $800 I should only be billed for $85 labor (30 minutes) + $110 part = Brand total of $105 USD. My daughter [XXX] and I, [XXX] (dad) bought the car at Longo Toyota El Monte, CA 91731. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Rosemead, CA, USA

Coolant bypass valve failure. Dealer (Atkins Kroll, Toyota Guam) is conveniently charging me over $600 for repair for a common issue for vehicles of this generation.

- Sinajana, GU, USA

Engine maintenance repair On display vehicle not in motion on radio screen

- Apopka , FL, USA

Known issue in certain Toyota models and years that the coolant bypass valve fails causing a "Engine Maintence is Required. See Dealer." Toyota is well aware of the issue but has yet to fix the problem as driving with a failed coolant part for too long could cause overheating.

- Hollywood, FL, USA

My engine maintenance required screen came on in my car. When I ran the diagnostic, they stated that the coolant bypass valve needs to be replaced in order to prevent the engine from overheating. This seems to happen on all of the 2020 and 2021 Toyota Corollas.

- Orlando, FL, USA

An engine maintenance required popped up in the vehicle and was unable to be removed Took the vehicle to get checked at a Toyota dealership and they advised it was the coolant valve bypass was faulty

- Moreno Valley , CA, USA

Warning display message -??Engine Maintenance Required Visit Your Dealer-??. After diagnostic at the dealer, coolant bypass valve failed and needed replacement with hefty, almost $900 for parts and labor cost. Did research online, and it seems that more vehicles from the year 2020-2021 have experienced the same issue at 30-55k miles, my car is on 106k miles. Please do a recall for this issue and extend warranty to $200k miles. This car should not have this sort of issue!

- Fredericksburg , VA, USA

engine coolant bypass valve issues under 70k miles

- South Jordan, UT, USA

The engine coolant bypass valve needed replacement at around 70,000 miles. Similar replacement have been needed in other corollas models of the same year.

- Westlake, FL, USA

Engine maintenance required light comes on and it wont go away. Happened around 65000 miles. It is cracked engine coolant bypass valve. It is happening to all toyota corolla 2020s. Dealer is asking $1200 to fix it.

- Pembroke Pines, FL, USA

Engine coolant bypass valve failed at 36,981 miles.

- Palatine, IL, USA

Dashboard stated engine maintenance required- visit your dealer and it turned out to be a bypass coolant valve malfunction per Toyota mechanic specialists.

- Salinas, CA, USA

Experience with a faulty Coolant Bypass Valve. Read enough information of this being a problem with newer toyotas (RAVs, Camrys, Corollas, etc.). Cannot get rid of Engine Maintence Required notification on dash which pops up every 10 seconds when I-??m driving after I dismiss it. This specific notificaiton is also NOT in the Toyota Manual whatsoever, and no it is not the Maintenance Service Required notification that comes up every 5,000 miles for basic check up.

- Whittier, CA, USA

My 2020 Toyota Corolla had a warning light turn on, on 3/20/2024. The warning read "Engine Maintenance Required". I looked up this issue and read that many people were having similar issues with the coolant bypass valve. I took my car to my local Toyota dealership and they confirmed it was the coolant bypass valve. The risks included in this failure can be overheating and engine damage.

- Riverside, CA, USA