2020 Toyota Corolla Power Train

The clutch slave cylinder failed at 48,000 miles. On the freeway, I had difficulty shifting into gear and I had cars passing me at high speeds, putting my life and others' lives at risk. This part defect is due to the plastic clutch slave cylinder failing. This common issue is well-documented by numerous other owners, with the part failing before the routine clutch maintenance cycle. My car was inspected by an independent mechanic, who said the lack of clutch pressure is due to the clutch slave cylinder failing. The worst part is that there were no warning lamps or messages before this happened. Toyota is claiming there is no recalls for this part, whic his astounding because the clutch is essential for the 6speed transmission.

FAULTY HYDRAULICS IN THE TRANSMISSION SYSTEM. FAULTY SLAVE CYLINDER LEAKING FLUID AND POTENTIALLY CAUSING VEHICLE TO BECOME "STUCK" IN GEAR WHILE DRIVING OR UNABLE TO SHIFT INTO GEAR WHILE PARKED. NOT AN UNCOMMON ISSUE WITH THESE MODELS.

Clutch Slave Cylinder at 51,000 miles failed causing vehicle clutch to not return and loss of fluid. Brake fluid and clutch fluid are used in the same reservoir and could cause issues causing vehicle to not be able to stop. Vehicle has been inspected by shop and has been replicated. The part exploded and leaks fluid inside of transmission housing. This also causes the clutch to fail as-well. Vehicle has always been serviced and maintained and this is a common issue with all vehicles that have 6 speed manual transmission with varying mileage. It is not a matter of if, it’s when and due to this being something that happens with generally no warning signs can be dangerous. There needs to be an updated part that can handle the design Toyota chose for this transmission.

At 97,000 miles, the slave cylinder in my vehicle blew. My clutch pedal had stuck to the floor, and my brakes became harder and harder to press down because the clutch takes from the brake fluid reservoir. Brake fluid began to leak from the transmission, and it had to be towed in. If I hadn't come to a stop, I could have gotten in a horrible accident.

I was driving on the freeway on my way to the house my car start to make some noises and I was loosing power I pulled up on the shoulder and turn off the car because the check engine came on turn off the car again but was struggling to go into first gear

Approximately one month ago the clutch pedal on my manual 2020 Corolla went all the way to the floor and stuck in place. Had it towed to my mechanics shop and it took them nearly 2 weeks just to get a slave cylinder to replace the defective part with. Fast-forward a week later and exactly the same thing happened. According to several different threads I have read online, this seems to be a problematic situation with the manual Corollas. Hopefully I will not experience any further problems however it appears that the defective slave cylinder part is to blame.

The "Engine Maintenance Required" message on a 2020 Toyota Corolla SE keep coming on after I have reset numerous time. The "Engine Maintenance Required" message on a 2020 Toyota Corolla SE typically indicates a problem with the coolant bypass valve, not the regular maintenance schedule. This message is distinct from the "Maintenance Required" light that usually prompts oil changes. The coolant bypass valve issue often results in a DTC code and may require replacement.

The contact owns a 2020 Toyota Corolla. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact became aware of an abnormal clunking sound, and that the check engine warning light was illuminated. The contact stated the failure had occurred while driving on a busy road. The contact attempted to shift the gear shifter into different driving modes; however, the vehicle failed to accelerate as intended. The contact stated that several good Samaritans pushed the vehicle into a nearby driveway. The vehicle was taken to an independent mechanic where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 64,000.

Engine Coolant Bypass Valve failed at 42400 miles. The problem was identified and confirmed at a dealership. There was a warning message appearing on the dashboard stating that engine maintenance was required.

Engine coolant valve is broken. Part of power train as it cools circuits for the power train.

The contact owns a 2020 Toyota Corolla. The contact stated while driving 30 MPH, the vehicle was jerking abnormally. The contact noticed a failure with the transmission; however, there were no warning lights illuminated. The contact was concerned that the vehicle might stall while driving. The dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was instructed to contact the NHSTA Hotline for assistance. The failure mileage was approximately 131,000.

Engine coolant bypass valve becomes faulty at low mileage

My vehicle has 20k miles on it and during acceleration, the CVT would not upshift was bouncing off the rev limiter. I had no controls over the Paddle Shifts or Electronic manual shifter controls. Tried to accelerate again, and bounced off the rev limiter again. Shortly after the CEL came on and the vehicle went into LIMP mode causing me to lose control of accelerator pedal, and the car drastically decelerated on its own until about 35mph Yes. Transmission is currently at shop awaiting for replacement unit This issue happened during a driver education event, and therefore was not on public roads with other pedestrians. Had this happened on a highway during merging or passing on a highway, this could have caused an accident by not having control of car's deceleration, and no warning brake lights to drivers behind me could have caused other drivers to rear end me Yes. The issue was reviewed by 2 dealers and both reported the CVT was faulty and needed replacement Yes. CEL came on, and was displaying codes P2757 and P2820. Dealer pulled the following codes: P275600- Torque converter clutch pressure control solenoid control circuit performance/stuck off P281F00- Pressure control solenoid j performance/stuck off (2 trip detected) P281F71- Pressure control solenoid j performance/stuck off actuator stuck

VEHICLE IS JERKING AND SHUTTERING WHILE IN MOTION BETWEEN 4-20MPH COLD OR HOT AND A/C ON OR OFF. THIS OCCURS BEFORE BRAKING AND SEEMS TO JERK FORWARD. TENDS TO OCCUR MORE OFTEN IN PARKING LOTS. THIS ISSUE IS ACCOMPANIED BY AGGRESSIVE ENGINE SHAKING AND ALL PASSENGERS CAN FEEL THE ROUGH IDLE. THIS ISSUE IS PROGRESSIVE GETTING WORSE WITH TIME OVER THE LAST FEW MONTHS. TOOK VEHICLE TO DEALER, SPARK PLUGS WAS THE ASSUMED ISSUE FROM TECHNICIAN. FIRST DIAGNOSIS WAS SPARK KNOCK. REPLACED SPARK PLUGS, DID NOT FIX THE PROBLEM. SECOND DIAGNOSIS WAS "OFF CENTER STEERING WHEEL CAUSING STABILITY CONTROL TO OVERRIDE DRIVER THROTTLE INPUTS AND LEAD TO JERKY OPERATION" CASE IS ONGOING AND A RESOLUTION HASN'T BEEN PROVIDED OR SOLVED. TOYOTA CORP. IS OPENING AN INVESTIGATION/CASE.

Transmission stuttering at steady speed more pronounced on inclines. Violent skipping or slipping on acceleration

TROUBLE SHIFTING DOWN FROM 3 TO 2

BETWEEN 10 AND 20 MPH OCCASIONALLY, NOT ALWAYS, THERE IS A HARD SHIFT THAT DOESN'T FEEL NORMAL. IT IS USUALLY UNDER LIGHT ACCELERATION AND CONDITIONS. EVEN TRYING TO MIMIC IT UNDER THE SAME EXACT CONDITIONS, SOMETIMES IT WILL SIMPLY NOT DO IT.. SOMETIMES IT WILL BE A HARD THUMP. OTHER TIMES IT WILL FEEL PREMATURE. (SHIFTING BEFORE IT SHOULD) I WANTED TO BELIEVE IT IS THE TRANSITION FROM THE LAUNCH GEAR TO THE CVT BUT THE TIMING OF THE TRANSITION AND THE DEGREE OF THE HARD SHIFT EVEN UNDER THE SAME CONDITIONS TENDS TO VARY CONSIDERABLY.

07/09/19 - THREE DAYS AFTER TAKING DELIVERY OF A BRAND NEW 2020 COROLLA SEDAN, MY CAR STALLED IN THE MIDDLE OF A BUSY CITY STREET. I WAS STATIONARY WITH FOOT ON THE BRAKE WAITING TO MAKE A LEFT TURN. WHEN I TOOK MY FOOT OF THE BRAKE AND ATTEMPTED TO ACCELERATE, IT HAD A COMPLETE POWER FAILURE. RED WARNING LIGHT CAME ON SAYING ENGINE POWER LOW. I WAS UNABLE TO START THE CAR AGAIN FOR SEVERAL MINUTES. I WAS NEARLY HIT BY CARS GOING AROUND ME. I TOOK IT TO THE DEALER FOR SERVICE AND THERE WERE NO ERROR CODES AND THEY COULD NOT DUPLICATE THE PROBLEM. 08/06/19 - MY BROTHER WAS DRIVING ON A HIGHWAY IN STOP AND GO CONDITIONS DURING RUSH HOUR TRAFFIC. WITH HIS FOOT ON THE GAS PEDAL, THE ENTIRE VEHICLE JERKED OR JUMPED SEVERAL TIMES IN SUCCESSION, STOPPED AND THEN DID THE SAME THING TWICE MORE. IT FELT AS IF IT WAS GOING TO LOSE POWER OR NOT GETTING ENOUGH GAS. I TOOK IT BACK TO SAME DEALER FOR SERVICE. ONCE AGAIN, NO ERROR CODES AND THEY WERE UNABLE TO DUPLICATE THE PROBLEM. SERVICE FOREMAN TOLD ME THOSE 2 INCIDENTS WERE DEFINITELY RELATED. I REPORTED BOTH ISSUES VERY DANGEROUS INCIDENTS TO TOYOTA CUSTOMER SUPPORT AS I FEEL THAT I AM DRIVING AN UNSAFE VEHICLE. AT FIRST, THEY WERE RECEPTIVE AND EVEN SENT A TOYOTA FACTORY REPRESENTATIVE TO INSPECT THE CAR. THEN MY CASE MANAGER TOLD ME THEY FOUND NOTHING WRONG AND "COULD NOT VERIFY MY CONCERNS". SHE SAID THERE WAS NOTHING MORE THEY COULD DO AND THERE WERE NO REPAIRS TO BE MADE. AFTER DOING MORE RESEARCH ONLINE, I FOUND THAT THE 2019 COROLLA HATCHBACK WAS RECALLED IN DECEMBER 2018 TO REPLACE THE CVT TRANSMISSION DUE TO A MANUFACTURING ERROR THAT COULD CAUSE LOSS OF MOTIVE POWER. THE INFO I READ STATED THE EXACT SAME ENGINE IS IN THE 2020 COROLLA SEDAN, BUT IT HAS NOT BEEN INCLUDED IN A RECALL. I AM VERY CONCERNED FOR MY SAFETY, AS WELL AS THAT OF MY PASSENGERS, AND OTHER VEHICLES.