Electrical System Problems of Toyota Corolla - part 2

Internal short within headlamp assembly causing the fuse to blow. Unrepairable, requires full replacement of part. Confirmed by myautoimports licensed Toyota repair center. Passenger side day running light, headlight, and brights are inoperative. Turn signal and front right indication light are still functioning. No warning prior to, but system warning came up after the short first occurred telling me to take into a dealer ASAP.

See all problems of the 2022 Toyota Corolla 🔎.

Driving on highway around 65mph, car shut down internally completely blacking out inside. Turned back on a few seconds later while still driving all lights were blinking. Pushed the sos no-one answered pushed again then someone came on. Matches the same description on the other 2025-26 hybrids in the Corolla cross and camry hybrid.

See all problems of the 2025 Toyota Corolla 🔎.

Sos is malfunctioning. Rebooting every thirty seconds. Interferes with handfree phone calls messages pop up asking to call for operator. Google this and it very common. The sos is for emergencies to get you help and it cuts off every thirty seconds. Your phone calls. Were the person you're talking to cannot hear you until it stops.

See all problems of the 2020 Toyota Corolla 🔎.

When I use blinker windshield wipers turn on and sometimes when I call or somebody calls my cell phone I can hear them, but they cannot hear me. Does not happen all the time, but I was concerned since there was a recall on certain Toyota Corolla that says a short circuit may develop in the OCS sensor, preventing front passenger air bag from deploying and my son who is a mechanic said both of these could be a problem with the wiring in the column and I thought it may be connected to the same recall as the air bags? the wipers coming on is happening more often these days and that is why I mentioned it to my son who is a mechanic. He will not touch it since it is still under my extended protection but he is concerned about it getting worse since the blinker is attached to the column. As far as using not being heard by callers or when I call I am concerned if I need to call in an emergency the ones I call cannot hear me. As far as when this started I do not remember but I know it's been at least 6 months if not longer, it just seems to be doing it more often lately.

The navigational systems shuts off in the middle of driving. The screen will go completely black making it unsafe when using navigational directions. The system also shuts off at the slightest pot holes. Windows also won’t work when trying to put them down from the drivers side.

See all problems of the 2021 Toyota Corolla 🔎.

The contact owns a 2020 Toyota Corolla. The contact stated that while operating the vehicle, the message "communication module failure" was activated. The cause of the failure was not yet determined. The local dealer and the manufacturer were contacted regarding the failure, but no assistance was provided. The failure mileage was 37,000.

Radio will constantly reset as well as the in-dash clock, and the tire pressure light will illuminate and flash. I found this appears to be a consistent issue with 2014, 2015, and 2016 Toyota Corolla's on youtube.

See all problems of the 2016 Toyota Corolla 🔎.

I am experiencing persistent and unresolved issues with the infotainment and display system in my Toyota Corolla, primarily involving apple carplay overriding the driver display. Even when I manually disable the setting that allows carplay/navigation to take over the display behind the steering wheel, the system does not retain this setting. After turning the car off and restarting it, the navigation/map interface reappears and overrides the driver display again. This behavior is extremely distracting while driving and interferes with my ability to safely view normal vehicle information. It has created multiple situations where I felt at risk of a collision due to unexpected display changes and distraction. In addition, there are ongoing system malfunctions including: •volume controls becoming unresponsive (the slider does not adjust sound), requiring the system to be restarted to function again. •intermittent failure of the phone connection/charging port, where the device does not connect properly to the system. A prior software update temporarily addressed one issue, but the core problems persist. I have been attempting to resolve this through ardmore Toyota dealership in PA for approximately one year without a meaningful fix or access to a qualified technician. This appears to be a recurring software or system defect that affects driver attention and vehicle operation. I am concerned this creates a significant safety risk for myself and others on the road. No one has taken me seriously even after I’ve gone to several Toyota dealerships over and over and I explained my concerns and they promise that I’ll be on a list of waitlist to be seen by a field tech technician however that has never happened and they are refusing to provide assistance.

See all problems of the 2023 Toyota Corolla 🔎.

My vehicle was backed into while ì was inside of it in a parking lot. Due to my horn failing. , I was unable to alert the other driver to see me. The clock spring is what failed the first time at 95k they replaced it. I'm now at 147k and it failed again . Now I'm discovering that if it does not work, there's an electrical circuit failure and that the airbag will not deploy if I get in an accident. This is a serious safety issue and I feel Toyota should be responsible for it for the life of the vehicle . A horn should never go out. Especially if it not working will keep my air bag from functioning properly . 850 out of my pocket is way steep. The replacement part lasted half as long as the original part did when I bought the car that to me seems like a faulty part this should be obvious and they should just fix the problem cuz I might have to just consult an attorney should they choose not to. The attached photo shows what happens when you can't beep your horn at somebody who's about to back into your car !!! my car still has not turned on any kind of warning lamp for the airbag or any kind of malfunction light, no warnings on my radio. I have noticed that my lane departure warning seems to work intermittently along with the automatic high beams that like to flash my high beams in people's face for some unapparent reason which also seems like a safety issue. If I had to take my car to an inspection station it would not pass an inspection due to the horn not working ! you cannot take your child to the department of motor vehicles and let them take their drive test if your horn does not work ! which happened to be my case !! very disappointing to say the least especially when you've paid $30,000 for a car.

The contact owns a 2023 Toyota Corolla. The contact stated that while driving at an undisclosed speed, the infotainment screen unexpectedly turned on and off. The vehicle was taken to the dealer, who determined that the infotainment system needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000.

The driver seat belt dont work and once in a great while it will work but even whenever it does latch it still shows the seat belt isn't on and that noise keeps going off but after a while the noise goes off but the symbol is still on the dash board. I recently got hit from behind (09/15/2025) at a red light and no air bags deployed. Im not sure if they were suppose to deploy but either way my seat belt dont work. And I know this isn't a safety matter but my radio doesn't turn off when I turn off my car and I can't lock/unlock my doors with the key fob I have to lock it with the key on the driver door. I have to take the fuse out for the radio so my battery won't die and so the radio turns off.

My 2021 Corolla showed an engine maintenance required message. This message pertains to replacing the engine coolant bypass valve - a common occurrence for the 2019-2023 Corolla/rav4 models. I have seen multiple instances online of complaints of this same issue around the 50k-60k mark of the vehicle. This should be a recall due to how common the problem is. I’m here to add on to that tally of complaints that have already been submitted.

After shortly pumping gas, I received a alert on my car that I needed to check my fuel cap, after checking fuel cap I proceeded to drive on the highway during this time a multitude of sensors started to go off on my car, and it started to drive weird there were light such as my interlock, being deactivated, parking, brake, deactivated, malfunction of vsc, collision deactivated. Then suddenly while driving at an accelerated speed, and trying to slow down, my engine turned itself off, and I was not able to re-crank my car. There is an active recall with Toyota for the fuel pump, which I was told by Toyota was the issue, but due to my VIN not being associated they would not repair as a recall.

The contact owns a 2022 Toyota Corolla. The contact stated that while the vehicle was stationary, the emergency button failed to respond. There were no warning lights illuminated. The contact then contacted the manufacturer and was informed that the contact needed to pay additionally for a subscription, for the feature on the vehicle to function. The vehicle was not taken to be diagnosed. The vehicle was not repaired. The dealer was not made aware of the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 58,000.

I just had to replace my transmission. 2 days later I have my check engine light, secondary collision, pre collision and parking brake malfunction lights came on. There is a osc recall that could cause these issues, but they’re saying stated my specific vehicle isn’t under a recall.

Beginning on April 18, 2025, my 2020 Toyota Corolla le began experiencing repeated failures involving multiple safety systems while driving. Without warning, several lights illuminate at the same time, including: brake system malfunction, pre-collision system, parking brake system, vehicle stability control, check engine, and secondary collision brake system. These warnings appear suddenly during normal driving, then sometimes disappear, then return again unpredictably. These failures disable several integrated safety systems and create a serious safety risk due to changes in braking performance, loss of stability control, and disabled collision-avoidance functions. Diagnostic scans from both the dealership and an independent mechanic repeatedly show: p1578 — brake system malfunction p265b — rocker arm actuator position sensor circuit range/performance (bank 1) both codes reappear even after being cleared. The vehicle was with loving Toyota lufkin, TX multiple times over seven months. They received over $7,100 in insurance payments for repairs, $463 towing cost (due to the negligence of loving Toyota) and almost $1,500 in rental cars (paid by state farm) but were unable to diagnose or fix the underlying failure. Loving Toyota also provided a courtesy rental for 7+ weeks while they did no repairs to the car. The safety warnings continue to occur. Toyota corporate is now involved but the vehicle remains unsafe to drive. The same code p265b is present that was present back in April 2025. This car is not safe! the problem has been reproduced by me, the dealership, and an independent shop. The vehicle is available for inspection. All scans, photos, videos, and documentation are available upon request. Date first occurred: April 18, 2025 issue continues intermittently to present day.

On March 12, 2025, I was involved in a frontal collision when another vehicle unexpectedly pulled out in front of me. Impact occurred to the front-left area of my vehicle. Despite the nature of the collision, the front airbags did not deploy. The vehicle is subject to safety recall 20ta03, which addresses incomplete or non-deployment of airbags and/or seat belt pretensioners due to ecu susceptibility to electrical noise in certain crash scenarios. The vehicle was declared a total loss by my insurance company and is no longer available for inspection. The manufacturer was notified in may 2025 and again in November 2025. The manufacturer closed the case citing inability to inspect the vehicle and later relied on photographs only to rule out airbag deployment concerns. No warning lights or messages related to the airbag system were observed prior to the collision. The non-deployment of the airbags placed my safety at risk during a frontal impact.

See all problems of the 2014 Toyota Corolla 🔎.

The contact’s mother owns a 2020 Toyota Corolla. The contact stated that while looking in the list of features on the infotainment center, the forward collision, brakes, accelerator, lane assist, on-board collision, and other safety features were flagged as malfunctioning. The contact stated that the list of malfunctioning systems seemed to have increased over time. The vehicle failed to turn off intermittently, causing the driver to make several attempts to turn off the vehicle. The vehicle was not taken to the dealer to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 80,000.

My 2021 Toyota Corolla's engine coolant bypass valve has shorted out once again. This is the second time this has happened in less than 40,000 miles. The vehicle has been inspected by two different dealers one two separate occurrences for the same issue, even after replacing the failed equipment.

While turning left out of a drive through my the steering locked up and shot to the left causing a run up on the curb. However after a second or two it cleared. Upon shutting the car off and restarting driving in a parking lot same problem occured steering wheel shot to left causing me to almost loose control then all electrical power was lost in the vehicle. The steering wheel fault came up on the dash and would not let me control the wheel.

See all problems of the 2017 Toyota Corolla 🔎.

While driving, my vehicle gas pedal becomes unusable, and two warning messages appear on the dash "charging system malfunction" & "low oil pressure" forcing me to pull over in traffic to restart vehicle. This has happened to me 9 times already in a span of 2 weeks. This same issue has happened to a few others and one stated "unfortunately the techs at the dealership couldn't figure out the issue as no errors were popping up when they hooked up the car to get a read out, so they called in a Toyota rep and even he couldn't figure it out. " and later stated, "I've heard from 5 other people who had the same thing happen with their Corollas; one lady was even driving on the freeway when it happened to her. I reported the issue to the NHTSA and can only hope that enough people did the same so that Toyota is forced to deal with the issue. " I am experiencing the same issues as this owner and this needs to be investigated!.

See all problems of the 2019 Toyota Corolla 🔎.

I am experiencing a recurring issue with the data communication module (dcm) in my 2020 Toyota Corolla. This component was previously subject to a recall, which I addressed at a dealership. However, the problem persists, and many other Toyota owners, including those with rav4 models, are reporting similar issues. Discussions on forums such as Toyota nation and Toyota owners club highlight these ongoing concerns. My vehicle is out of warranty, and replacing the dcm is estimated to cost over $800. I have confirmed that the issue lies with the dcm system, as removing the corresponding fuse eliminates the error message on the multimedia system. However, this circuit also powers the right speaker and microphone, making it impractical to simply disconnect the module. The local dealership has quoted $205 for diagnostics, despite my prior identification of the problem. Revisiting the original dealership where the recall work was performed is not feasible, as it is located across the country. Toyota has not offered a remedy, leaving me without an affordable or practical solution to address what appears to be a manufacturer fault. I am seeking assistance and accountability for this persistent and widespread issue. . Read more...

Car would not start/turn over - not battery related. Toyota determined the ecu went bad and stated the cause was improperly jumping the battery. The issue happened randomly one day (car was driving fine previous days).

To start, on [xxx], I was going through an intersection on a country road and my automatic emergency braking engaged for no reason. My car stopped despite no other vehicle or object being in my way or anywhere close to me. I found it really weird but did not think much about after the fact. I have also heard a rattling noise under my hood since [xxx] and have reported this to Toyota and tried to have it fixed multiple times (and showed them videos) but they were never able to duplicate the noise so it has not been remedied. On [xxx] I was traveling on a highway during rush hour and the traffic in front of me came to a sudden stop. I braked as hard as I could; my automatic emergency braking did not engage and I rear ended the car in front of me (minimal damage to that car). We both immediately pulled partway onto the narrow left berm (we had both been in the left lane to get onto another highway). My car then turned off by itself and gave me an engine warning (I believe low engine oil- I had just had it serviced 3 days prior). The other car owner and I exchanged information quickly and decided to drive away because we were blocking rush hour traffic and it was dangerous. However, my car would not start back up. I called 911 and they came to use their vehicle to push me to the right side of the highway onto an exit where I was no longer blocking traffic. During the wait, I felt like I was going to die with traffic honking and swerving to avoid me. When the police officer was moving my car, the parking brake engaged when I put the car in neutral and would not turn off, so the smell of burning rubber was strong since the tires would not roll. Once the tow truck driver arrived he was able to use jumper cables to disengage the parking brake but the car still would not start. There were no prior warning lights. The car not starting was confirmed by the dealer- they are holding off doing maintenance to have an engineer check out the car and figure out what happened. Information redacted pursuant to the freedom of inf.

The vehicle flashes ‘connected device is not compatible’ with the ‘sos button flashing continuously red then green. ’ this message causes the microphone to remove 1 to 3 seconds of sound every 5 to 15 seconds making a clicking noise when speaking on vehicles bluetooth. This is typically corrected by a dcm reset and firmware update. Not only is this incredibly inconvenient during normal conversation but having to repeat random portions of the conversation is irritating at best. Recently I had to make a 911 call and had to repeat myself several times to request emergency services. This glitch caused the emergency 30 second call to be extended roughly 1 1/2 to 3 minutes delaying response time. If the clicking occurs while the other person is speaking this is not noticeable. This is an identified issue only covered under basic warranty with specific TSB correction. This defect causes portions of vehicle occupants conversation to be removed and replaced with a clicking noise.

The contact owns a 2000 Toyota Corolla. The contact stated that while the vehicle was parked and unoccupied for under an hour, a fire started inside the cabin of the vehicle. The fire was self-extinguished. Neither a fire department nor a police report was filed. The vehicle was not destroyed; however, the middle interior of the center console was destroyed. The vehicle was towed to the residence, and an independent mechanic inspected the vehicle and informed the contact that the fire had originated in the power outlet. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 200,000.

See all problems of the 2000 Toyota Corolla 🔎.

When using built in carplay navigation the gps will start drifting 10-20 feet from the highway into field or other highways causing it to reroute constantly. When phone is disconnected from carplay during the gps drifting current location will go back to right location on the phone. We tried connecting different phone to Corolla all had the same issues. My other two cars don’t have this issue using the phones. Dealers won’t address the issue.

Engine coolant bypass valve malfunctioned at 34xxx miles, causing “engine maintenance required” this could cause the engine to get too hot or not hot enough and affect the internal components of the engine. After speaking to others with the same model and even other models, it seems to be a ongoing issue for many people.

Vehicle would not start. After the vehicle's battery was jumped, the vehicle would start, but upon moving the vehicle, the dashboard message read, "engine stopped - steering power low. " there are numerous entries in online forums of others looking for solution for the same issue. Sometimes others have said that this occurred while in stop-and-go traffic on the highway or idling at a red light. Clearly, if a vehicle becomes disabled on a roadway with no prior warning of a failing battery, that is a safety issue. There was no warning of a failing battery. Battery was replaced, which was a surprise for a 2020 vehicle. However, this issue has occurred in newer vehicles as well if you review the comments in the online forums. Failed battery was tested and measured 67cca/295cca @11. 44v. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Electric.

The contact owns a 2013 Toyota Corolla. The contact stated that when the outside temperature was hot, the vehicle was not working correctly. The vehicle was difficult to start, and there was an abnormal ticking sound while starting the vehicle. The contact allowed the vehicle to cool down before the vehicle would run smoothly. There were no warning lights illuminated. The vehicle was taken to an independent mechanic, who retrieved dtc code: p1604 (startability malfunction) and the electronic control module needed to be replaced. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case. The approximate failure mileage was 188,000.

See all problems of the 2013 Toyota Corolla 🔎.

My vehicle stalled when pulling out into traffic. I lost power steering and electrical and the engine died. The vehicle had to be restarted to continue driving. I was going about 1 to 2 mph when the issue happened. The vehicle was in motion and stalled while other vehicles were in motion putting my safety at risk, had I been going any faster or if there was an increased amount of traffic. I reported the problem to the dealer service center, but they were unable to reproduce it. The vehicle was inspected by Toyota only, no police or insurance. When the issue happened, a warning light appeared on the dash similar to a circle with an exclamation mark inside. There were no messages and no other symptoms prior to the failure.

See all problems of the 2024 Toyota Corolla 🔎.

A Toyota owner is frustrated with a faulty navigation system that repeatedly crashes and refuses to update. Despite multiple dealership visits and a customer service call, the issue remains unresolved. The owner argues that the malfunctioning system poses a safety hazard, as it could potentially direct drivers to dangerous roads.

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.

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