2020 TOYOTA COROLLA Engine Problems

The engine coolant bypass valve has been confirmed faulty at 47,000 due to failure to actuate. Known issues of engine coolant leaking failure have been reported.

The engine coolant bypass valve is coming up as a code. Around 44k miles. Others have had this problem.

"Engine Maintenance Required" sign came on, I took it to the dealership and was told it was the coolant bypass valve and it would be $800. Upon doing some research is see that this is a very common issue for 2020 Toyota Corollas. My car is still under 60,0000 so I'm surprised I need work this experience done already

The car is showing an engine maintance required which ended up being a faulty coolant valve

The car is at 58,125 miles and I’ve had a “engine maintenance required, please take to dealership” message for the past 3 months which will not go away and is just stuck on my dash. An OB2 port scanner shows nothing wrong, but after a diagnosis at toyota it appears I need a new engine coolant bypass valve. As it turns out, many other corolla, rav 4, and camry owners of the same generation (2020 and up) also receive the message and need to get the coolant bypass valves replaced around 30k-60k miles.

coolant bypass valve is malfunctioning in 2020 toyota corolla se. upon research this is a known problem in toyota corollas, camrys, rav 4 and prius, and was recommended to report this as a possible recall. "engine matinence required, visit your dealer" message does not go away. takes 5+ minutes to blow cold air.

Engine maintance required/coolant bypass valve issue

Coolant bypass valve bad at 26000 miles

"Engine Maintenance Required - Visit Your Dealer" message popped up on my car's (Toyota Corolla 2020) dashboard all of a sudden and I didn't have any issues with engine before. I brought up my card to Toyota Service Center in Sunnyvale, CA and they told me that my car's coolant bypass valve has to be replaced and re-check if it's needed which is an uncertain thing and advised me not driving the car as it may damage the cooling system components or even the engine itself. All of these will cost me 911.58$ which is too much but it's not all yet. I was researching this issue on the Internet and figured out that many people who has the Corolla 2020 and 2021 had the exact same issue. I don't think it's a coincidence. People also complaining about the same issue for Toyota Rav4 and Toyota Camry. I don't want...

The coolant bypass valve was constructed of poor quality plastic, and has cracked at a mere 50,000 miles. It's Leaking coolant into the sensor. Along with potentially causing major damage to the engine.

coolant bypass valve issue under 60k miles.

Engine maintenance required . bypass coolant valve defected

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.

Coolant bypass valve failed at 52k miles.

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.

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.

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...

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.

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

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.

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.

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

Warning display message “Engine Maintenance Required Visit Your Dealer”. After diagnostic at the dealer, coolant bypass valve failed and needed replacement with hefty, almost $900.00 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!

engine coolant bypass valve issues under 70k miles

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.

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.

Engine coolant bypass valve failed at 36,981 miles.

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

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.

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.

Had my car (Toyota Corolla 2020 SE) give a “engine maintenance required, take to a dealer” error message on my digital dashboard. No error codes from any maintenance device but apparently only the Toyota dealership can find this in the software using their computers to find it somewhere deep in there… The problem is the upper engine coolant bypass valve. This is costing me almost $1000 including the $80+ in diagnostics that ONLY the Toyota dealership can see and find out. Apparently this is a very common occurrence with the 4 cylinder corollas and RAV4s.

Engine Coolant Bypass Valve replacement , Toyota is charging me 888 dollars for repair.

I discovered that my 2020 Toyota Corolla SE has a Coolant Valve Bypass malfunction coded "p2688115". I have also discovered this a prevalent issue after you hit 70,000 miles. There are forums all over the internet with complaints about the same issue as mine. I did some research and found no recalls. With this being such a common issue for no reason, faulty equipment. The car has been inspected by a Toyota dealer in Bradenton, FL because we had thought the service vehicle message was for a tire rotation. They scanned the vehicle and discovered the fault code "p2688115" after trying to reset it numerous times. The senior tech was the one who scanned it. He knew the exact reason why it was not clearing before scanning the vehicle. He only scanned it to solidify his hypothesis. I then spoke to the service team, they wanted me to bring it...

Coolant bypass valve leaks through wiring and damages itself.

After I had brought a my car to the dealer for its oil change and tire rotation, a warning message came from my car saying "Engine Maintenance Required". After checking with my dealer, they said that the coolant bypass valve needed to be replaced. After checking online, it seems that this is a common problem for recent Toyota vehicles.

After bringing my vehicle in for its oil change and tire rotation, a warning message showed up from my car saying "Engine Maintenance Required". After checking with my dealer, they said that the coolant bypass valve needed to be replaced. My car only has 33,000 miles and has had no issues whatsoever.

The coolant bypass valve in some Toyota models has been malfunctioning recently and has become a common issue. Dealer confirmed that this was the issue per attached diagnostic report/invoice copy. Costs were >$800 to repair the issue for a <$100 part and 30 minutes of labor. The "Engine Maintenance Required" warning was visible in the display. Unsure as to the short or long-term effects of this malfunctioning part, but as it's related to the cooling system of the vehicle, it may trigger other more serious issues.

Around 40k miles I received an Engine Maintenance Required warning. After some research Engine Maintenance and Engine Service Required are two very different indicators. I received and P2681 code meaning the electrical coolant bypass valve had failed unfortunately one can’t tell if it’s stuck shut or open this could lead to one’s care over heating and or damaging one’s engine. After some research I’ve come to find out most 2020-2024 corollas have been having this issue tends to happen about 30-50k miles

Coolant bypass valve failure. Replacement part carried the same defect.

In the past week at 30,700 miles, my 2020 Toyota Corolla "Engine Maintenance light; see dealer" service light appeared on the dash. Through talking with a Toyota dealer, they are aware of this issue with Corollas, Camrys, and Rav4's. It is an engine coolant bypass valve, and appears to be faulty in many vehicles according to youtube videos, google, and Toyota service. Perhaps this needs to be a recall? Also, the dealer wants almost $800 to repair even though many people do it on youtube in under an hour. Parts are less than $200, and 1.5 hours of labor do not add up to $800.

I had to replace all four tires before reaching 40k miles. Brakes needed to be fully replaced with only two years of driving it. AND Engine Maintenance Light on for an issue with the coolant bypass valve, not covered under warranty. This is causing issues with the engine, when driving even at 25 miles per hour or at 65 the car sounds like its dragging or forcing itself, the wheel shake & car feels unbalanced even with a tire alignment. Overall i give the car a 2.5 out 5 star in performance. The body of the car is so fragile and made by very cheap materials. Spending a fortune on this vehicle and it hasnt even reached 60k miles yet.

Engine maintenance light came on and found out I had replace coolant bypass valve. Apparently this is an issue many 2020 corollas and RAV4 have issues with and need replacement. There’s no reason or rhyme as to why it becomes faulty but should be recalled as many people have the same issue and dealership are aware of this issue.

Just bought a used 20 Corolla SE and put less then 500 miles on it and got a "maintenance required return to dealer" notification on the dash and a warning message in my information screen via infotainment system. Dealer said they got nothing via a scan. The issue is the Coolant Bypass Valve. I reset the light on the dash and restarted my car with air off and it did not come back on. The second you turn on the air (the A/C in particular) the light immediately popped back on along with a new warning message. I've looked around and there's literally THOUSANDS of people reporting the same issue all on vehicles between 15k and 100k miles. The dealers also charge at least $600-$1100 to remedy this all too common issue as they will tell you it is not covered under warranty. I'm unsure of what promised damage to...

Coolant bypass valve problem. Engine maintenance required light has come on. This part affects several other components of the vehicle. Toyota dealership wants to charge $800 to fix it. It is a very common issue faced by many customers of 2020+ Corollas and 2019+ Rav4s. All dealerships with service departments are aware of this issue.

Coolant leak due to engine defect from manufacture.

I have only had the car for a year and a half, and I have already had to replace the battery which was less than 2 years old, all 4 tires (2 at 40000 miles and 2 at 48000), and now the engine wiring harness somehow got severed and has to be replaced which is almost $6k repair!

Code P2688115 engine maintenance required sign turned on at around 41000 miles. Other people having similar problems with coolant bypass valve. Suspect that coolant bypass valve safety standards might be at fault.

Newly bought vehicle won't start when key is turned in ignition. Problem is a repeat problem and vehicle was repeatedly towed to dealer (Gosch Toyota). Dealer said there is nothing wrong with the car . Dealer admits he can't reproduce the problem and paperwork I've obtained from them indicates they may not have even tried. Car has major safety issue and is unreliable which is an explanation falling on deaf ears at Gosch. So it remains parked in my driveway. I refuse to put anyone in my family into it because of obvious safety issues. Car is totally unreliable if one can't rely on it to work .

We rented a 2020 Toyota Corolla from Hertz at the McCarran Airport Las Vegas NV and almost past out while driving due to Carbon Monoxide poisonings. My wife was sick 3 out of the 4 days while this auto was being driven in our possession. At first our sickness was thought to be motion sickness or maybe from something we ate. It wasn't until we drove this car out of town when we both my wife and I started getting very sick weak dizzy and vomiting. We tried to drive out to the Hover Dam but stop about 10 miles short. After a brief rest we decided to had back to Las Vegas. Just outside of Las Vegas I could hardly breath and had all the same symptoms previously stated. Luckily I was able to get out of traffic and pulled off the high stopping at the first place I...

I WAS WAITING AT A STOPLIGHT WITH MY FOOT ON THE BREAK WAITING FOR IT TO TURN GREEN. I TURN THE WHEEL TO MAKE A LEFT TURN AND PUT MY FOOT ON THE GAS AND THE CAR DIEDALL THE BUZZERS WHISTLES AND LIGHTS WERE FLASHING ON THE DASHBOARD.. I WAS ABLE TO SHIFT THE CAR TO PARK AND BACK TO DRIVE BUT NOTHING HAPPENED I WAS IN THE MIDDLE OF TRAFFIC ON A BUSY STREET AND WAS JUST GETTING READY TO CALL THE TOW TRUCK WHEN I DECIDED TO TURN THE CAR OFF. WHEN I TURNED IT BACK ON IT WAS FINE AND I WAS ABLE TO TURN LEFT. THAT HAPPENED TO ME TWICE ON DIFFERENT OCCASIONS. THIRD TIME I WAS TURNING INTO A DRIVEWAY AND A TRUCK PULLED IN FRONT OF ME I HAD TO PUT MY FOOT ON THE BREAK. AND THEN I PUT MY FOOT ON THE...