2018 Toyota Corolla: adaptive cruise control problems

Filed May 5, 2023 · Brakes, Driver assistance · NY

Check engine light on. Cruise control stopped working. Fuel cap tightened.

Filed Feb 8, 2022 · Driver assistance, Fuel system · VA

Had a recall on the fuel system causing the system to potentially stall the vehicle. Had the car service but still when doing cruise control its still doing the same thing by reving the engine to high on RPM to potentially stall the vehicle. Potential safety problem

Filed Jan 6, 2022 · Driver assistance, Electrical · LA

While driving the car started to sputter like it was going to die. When I stopped to gas the next day a gush of air came out of the gas tank when I took the cap off. I put gas in and then my car wouldn’t start. For 3 hours I tried and finally it started. Now I can have in park and it revs clear to the 5 sometimes then it starts sputtering. Every time I put gas in I have to sit for 3 hours then it starts. The trac off light on the dash is on as well so nothing works the lane control, cruise control, the emergency brake system.

Filed Dec 31, 2021 · Fuel system · KY

While driving at 55 mph, cruise control engaged, the vehicle suddenly lost power, the cruise control disengaged, the engine light came on and the traction control disengaged warning was displayed. The vehicle continued operating. After engine fault code stated there was a Mass Airflow Sensor fault. Owner replaced the sensor. Two weeks later, the situation repeated, this time the fault read as an oxygen sensor error. After a day or two, the fault would clear, only to repeat a week or two later. Then, on Dec. 31, the vehicle completely stalled at highway speeds. It would restart, but if the rpms exceeded 2,500 it would stall again. Trying to get an appointment with the dealership, but will have to wait until after the New Year for them to open again.

Filed Jul 17, 2020 · Acceleration · 500 miles · PA

The vehicle cruise control works fine on a flat surface, but when it encounters a downgrade it accelerates 10mph over the set speed and the rpms increase to 4000. The vehicle then applies the brakes forcibly to slow to the set speed. It seems to downshift but doesn't let off throttle so it speeds up rather than engine brake.

Filed Dec 8, 2019 · Acceleration, Transmission · 25,000 miles · IN

Car recently is not shifting properly. Drives at high rpms and if I accelerate too quickly say I get up to 80 MPH on highway car won't shift into next gear the rpms suddenly drop all the way down to under 1000 and quits accelerating until it jumps back into gear. Have to let foot off the gas for it to shift and cruise control has been not functioning properly either.

Filed Jul 25, 2019 · Acceleration · 50 miles · SC

Tamara inflator. The cruise control in my 2018 toyota corolla has been messed up ever since I bought my car last year.I told the dealer ship about it they claimed they adjusted it but it still increases my speed going down hill and I've got a speeding ticket because of it.my daughter also called toyota main head quarters but they said if I wanted it fix I would have to pay out of my pocket..I will set my cruise control at 60 on the hwy if I go down a small. Hill my RPM and speed go up.

Filed Mar 19, 2019 · Acceleration, Brakes · 17,890 miles · SC

The 2018 toyota corolla cruise control is dangerous. When cruise control is on, going down a slight hill, the transmission downshifts but throttle does not reduce causing car to increase speed 10-15 MPH with high rpms. At bottom of incline transmission goes to higher gear and brakes are applied very hard causing vehicle to suddenly and violently slowdown 15-20 MPH. In this situation if cruise control is not disengaged the car will go well over the speed limit and to an unsafe speed for the roadway. The braking action is so sudden and violent it's difficult to control the vehicle and has several times in a couple of months caused me to very nearly get rear ended by a vehicle behind me which was not originally following too close. As the dangerous cruise control starts its increase in speed the vehicles behind may increase their speed and as they are increasing speed my car cruise control system jams on the brakes and cause the following car to come dangerously close to collision. As well the other driver has on at least one occasions became angry started road raging thinking I had purposely brake checked. The 2018 toyota corolla cruise control is dangerous, could certainly be deadly based on my experience and further is virtually unusable as a purchased feature on anything but a flat road. I've driven over 20 cars in my life and am very experienced with cruise controls in 6 different manufacturers cars. The cruise control on my 2018 toyota corolla could cause injury, lawsuit, road rage with personal injury or death. I've already had it to the dealer twice and am taking it back this week.

Filed Mar 17, 2019 · Acceleration · 31,800 miles · TX

They asked me to come to toyota of dallas to fill out an "unintended acceleration" ua report (see below). The technician became very angry about this issue and told me that the manufacturer created the car this way. Under almost any circumstance, (going around a sharp curve, heavy traffic, any downhill or uphill, weather conditions, or fog) when using the cruise control the car will try to slow it self down from set speed at 65 MPH, by dropping into a lower gear, ramping up the RPM's to 5000 forcing the vehicle to accelerate 10 to 15 miles over the set speed which was set at 65 MPH. In this case, the brakes will not stop this acceleration while the vehicle is amping upward. The only way to stop the unintended acceleration is to turn off the cruise control. Highway driving from carrollton, texas to waco, texas on a clear day. My company has a policy that company vehicles should not exceed 70 MPH. It is a fireable offence.

Filed Jan 11, 2019 · Acceleration, Engine · 6,000 miles · AL

The RPM of the car jumps upto 4000 when attempting to slow the car on down hills. Toyota dealerships are refusing to acknowledge the issue but there are cases many people got their car fixed or exchanged. This proves the issue when using cruise control. The ideal intent of using the cruise control is to save gas mileage and effort to drive the car for long distances. I have to travel long distances to work on daily basis. I feel very uncomfortable and unsafe driving the car on cruise. Toyota should acknowledge the problem to save the trust of the customers. This happens consistently. I am trying to contact toyota for the issue. I hope to receive a positive response.

Filed Dec 17, 2018 · Acceleration, Seat belts · FL

2018 toyota corolla. Consumer writes in regards to alert/alarm for key and seat belt. *ld the consumer stated the alarms were not loud enough and did not sound long enough. *js the consumer stated the cruise control was ineffective. The consumer stated it did not maintain the set speed on an incline and decline. The consumer was informed by the dealer and manual the vehicle was operating as designed. The consumer was not satisfied with this response.

Filed Jun 29, 2018 · Acceleration · 4,500 miles · PA

When using the radar controlled cruise control, the engine will sometimes rev to over 4000 RPM. A toyota field engineer told me that this is engine braking, but this occurs when the car is on a level stretch of highway at the set speed and no other unusual circumstances. This exact same problem occurs with my wife's 2017 corolla. I've read a number of comments on the toyota owners website (https://www.toyota.com/owners/community/ask-an-owner/question-details/id/62752030). Some have even said their cars speed up when this phenomenon happens. This has happened consistently every time I've used the cruise control since I took delivery of the car on 12/1/2017, and it happens multiple times per trip. The date I entered below in this form was only the latest occurrence.