2020 Toyota Corolla Electrical System

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.

The contact owns a 2020 Toyota Corolla. The contact stated that after the vehicle was started, the contact started driving, and a voice message was heard coming from the speaker on the driver’s side door, stating that the communication module had failed. The vehicle was taken to the dealer, where it was diagnosed, and determined that the Data Communication Module needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was informed of the failure. The failure mileage was approximately 38,000.

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.

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.

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.

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. Please look at the corresponding links detailing the systemic problem with the system, that other owners have experienced [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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)

Battery and alternator died causing power steering to fail and wheels to lock up. Should not happen on a car this new, brought to dealer and charged me $740 to fix it.

THE BATTERY TRAY (PART NUMBER 74404-12560) WHICH HOLDS THE VEHICLE'S BATTERY CREATES AN UNSAFE CONDITION. I NOTICED THE BATTERY TRAY IS DESIGNED TO FIT ONLY THE PANASONIC BATTERY THAT CAME WITH THE VEHICLE. THUS, IT IS IMPOSSIBLE TO REPLACE A DISCHARGED OR DEFECTIVE PANASONIC BATTERY WITH A STANDARD BCI GROUP NUMBER BATTERY WHICH ARE READILY AVAILABLE IN RETAIL STORES. THIS SITUATION WILL CAUSE MOTORISTS TO BECOME STRANDED AND IS ESPECIALLY UNSAFE IF THE PANASONIC BATTERY FAILS AND NEEDS TO BE REPLACED IN THE WINTER. TOYOTA SHOULD BE REQUIRED TO RECALL THE 2020 COROLLA AND REPLACE THE BATTERY TRAY WITH A NEW TRAY DESIGNED TO FIT A STANDARD BCI GROUP BATTERY. *LN*JB