2021 Toyota Corolla: engine stalls while driving

Filed Feb 26, 2026 · Transmission · DE

One night shortly after starting the car, I went to put the car in first gear amd as I let out the clutch, but pedal stayed flat to the floor. I was able to lift the pedal with my foot and drive the car back to safety. The next day, I drove the car to the nearest shop before anything catastrophic happens. This time, right in the shop parking lot, I lost all hydraulic pressure in the clutch and I could not take the car out of gear. I had to turn off the car to prevent it from stalling as the clutch slowly engaged without my doing. I had the car inspected by two repair shops—one quote at $3900, the other at $6600. The issue is a failed seal on the clutch slave cylinder, located inside the transmission. The seal is much too thin from factory to withstand normal use. There are no recalls for this issue, and MANY affected owners. This is a safety issue because the failure can be almost immediate and will leave the driver unable to take the car out of gear, leading to out of control driving.

Filed May 21, 2025 · Engine · NC

Vehicle: 2021 Toyota Corolla Apex, 2.0L Engine Component Failure: The Engine Coolant Bypass Valve (also called Water Valve) malfunctioned. Its plastic housing cracked and leaked coolant, corroding the electrical connector. This prevents proper electronic control of engine temperature. The failed component is available for inspection if removed. Safety Risk: This issue poses a safety risk due to potential engine overheating. Overheating can lead to sudden loss of power or engine stall while driving, increasing the risk of a collision, especially at high speeds. A roadside breakdown in unsafe conditions is also a risk. Confirmation: A Toyota dealership service center confirmed the problem, diagnosing it as a leaking coolant bypass valve requiring replacement. Inspection: The vehicle was inspected by a Toyota dealership technician. It has not been inspected by the manufacturer, police, or insurance representatives. Warnings/Symptoms: The primary symptom was the "Engine Maintenance Required" message illuminating in the instrument cluster. This first appeared approximately [State how long ago, e.g., "3 weeks ago" or "at 45,000 miles"]. No other immediate symptoms like visible leaks or temperature fluctuations were initially noticed, though a leak was confirmed later.

Filed Jan 11, 2024 · Engine · 30,000 miles · AL

The contact owns a 2021 Toyota Corolla. The contact stated while his granddaughter was driving approximately 20 MPH, the check engine warning light illuminated. Additionally, the Parking Brake and Lane Tracing Assist malfunction indicators were illuminated before the vehicle stalled. The vehicle failed to restart and was later towed to the local dealer who diagnosed the vehicle and determined that the engine control unit software needed to be updated. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was 30,000.

Filed Dec 21, 2022 · Driver assistance · FL

I purchased my Toyota corolla SE 2021 in May 2021 with 11 miles on it. I received safety connect trial for one year. It was so unsafe. I believe there was an invasion of privacy because after requesting my data held at Toyota Corp., I read of times of install/deactivation that were not proper in accordance of my purchase and my understanding of the set up at time of purchase. It appears this safety connect was already connected before my purchase, which is a safety issue and is a violation of privacy and lead to data breach. With my connected device, iPhone, acting crazy and miss reading my locations and redirecting, etc., I was on my way to Apple in December 2021 with 2016 miles on my car. I believe the remote connect was being controlled by others as up to five devices are allowed on the module. GPS worked accordingly obviously, because when I exited the interstate, immediately my engine stalled out at 50 miles an hour in the rain. I was scared to death and found the closest gas station to pull over and stop my engine. About 30 minutes later, I continued to apple, 1 mile away. After restarting my car, I was alerted to be safe and contact my provider. I found out that that meant that my control module was blown. This has affected me in a few ways. Maps have read I am in China, South Florida, north, Florida, Georgia, California. I also went to the local Toyota for an oil change and tire rotation in October 2022 and learned that I needed a tire replacement and the pressure was down to 15 pounds. No light appeared. If the communication module is destroyed, then all of the safety features are, as well. No lights alert, no Blindspot warning days, automatic emergency, braking has failed as well, as I recall when it worked and it is not even sensing a vehicle or anything in front of it. Also the red signs that display, stop, certain miles per hour, etc. are reading incorrectly. Furthermore, Toyota wants to disclaim all warranties associated.

Filed Oct 28, 2022 · Driver assistance, Electrical · FL

Around 1900-2000 miles of ownership, 6 months after purchase, I was driving on I95 in the rain, 65 MPH, traffic in West Palm Beach, Fl, on my way to Apple(Mall). Upon exit, my engine completely stalled out. I pulled off road, not smoothly at all, turned off the car and it restarted 30 minutes later so I resumed my travels. The next day, my vehicle alerted me that the communication module had blown, not in those words. I had called Toyota and told the representative of the spoken alert and she informed me to go to dealership. They were clueless how to fix and reset battery. This communication is vital for all modules to perform safety features. Today I had a large screw in tire and no alerts of low pressure. Tire read 12 lbs pressure. My lane departure/correction doesnt work half of the time. My attorney has informed me that he hears there are concerning issues involved and noncompliance has led to him filing suit today. Software Source code leaked and left open on GitHub for 5 years has compromised the safety of all connected customers and their devices.

Filed Jul 12, 2022 · Transmission · CA

I was driving home from school, and while trying to change lanes on fairly busy road on a hill and my car with a CVT transmission stalled out and a check engine light appeared on my dash with a message reading “drive-start control malfunction”. While trying to limp the car home, the engine killed power three or four times within like a five minute drive up some hilly roads and I constantly had to pull to the side and turn the car off and on just to make it up the next hill. I took it in the same day the issue were happening and they didn’t diagnose the issue until two three week after I had originally brought it in and said it was a CVT issue. A week or two prior to this happening, I was coming down a hill towards a stop light and when I get hit the stop light my car jerked and the “drive-start control malfunction” messages appeared then immediately went away, so I paid it no mind.