2023 Toyota Corolla Electrical System Problems

The drivers side locking mechanism doesn’t work with the key fab all of a sudden and I have to climb in through my passenger side door

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.

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 INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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

Brake booster failure and lost power due to malfunctioned battery . Car could not start and had to be transported by road assistance to dealer for repair. Dealer had to replace Brake Booster as well as replace battery with a new one. Car was purchased brand new in March 2023. Only 10700 miles on it.

See attached document for complaint

Volume of media from certain apps can't be adjusted. The vehicle says that if media is not playing, the volume can't be adjusted. This can cause distraction while driving and increase risk of a crash. Specific application where this is the case: Youtube audio through an Android Auto connection. Yes it is available for inspection. My safety and the safety of others is at risk, because all Toyota models with this infotainment system function the same way. Drivers may choose to become distracted by their mobile device while trying to adjust the media volume, risking a crash. The problem has not been reproduced or confirmed by dealer, however it would be very easy for me to do so. The vehicle has not been inspected by any party outside of the Toyota dealership. When attempting to adjust the volume, the volume level will appear as a numerical value in the infotainment screen ONLY IF there is currently "audio" playing. If there is no "audio" playing, an error message will appear telling the occupant to begin playing audio to adjust the volume. This becomes an issue when using an app like YouTube to play audio. With YouTube Premium, you can set a playlist of music, videos, or podcasts to listen to with the screen of your mobile device off. However, the infotainment system will not detect the audio the speakers is playing AS AUDIO, and will not adjust the volume. This leaves the driver with no choice but to pay for a Spotify, Sirius XM or Youtube Music subscription in order to listen to music or media and adjust the volume safely. Reproduction: Start vehicle. Start Android Auto. Start playing media through YouTube. Attempt to adjust media volume using the dial or buttons in the vehicle. Error message should appear. Only way to adjust volume is to switch to FM/AM Radio, play Spotify or other app to adjust volume and then resume YouTube media (REQUIRES TOUCHING PHONE), or don't use Android Auto and pay for Toyota GPS. HOW TO FIX: Allow volume adjustment at all times.

The contact owns a 2023 Toyota Corolla. The contact stated that after starting the vehicle, an audible chime was heard, and unknown RED message was displayed on the instrument panel. The vehicle was taken to a dealer however, the dealer was unable to duplicate the failure or determine the cause for the failure. The manufacturer was notified of the failure and the contact was provided a case number. The vehicle was not diagnosed or repaired. The failure mileage was unknown.