2023 Toyota Corolla Electrical Problems

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.

Your infotainment system is not saving your display settings—even when you disable Apple CarPlay from overriding your instrument cluster, the setting resets when you restart the car, causing the navigation to take over again unexpectedly. You're also experiencing unresponsive volume controls and intermittent phone connection issues that require system restarts to fix. These frequent display changes are distracting and have created unsafe driving situations, and multiple dealership visits over a year have not resolved the problem.

Your car's brake booster failed and the battery malfunctioned, preventing the car from starting. You had to have it towed to the dealer, where they replaced both the brake booster and the battery. This happened at only 10,700 miles on a brand-new car purchased in March 2023. The repair involved replacing the brake booster assembly and installing a new battery.

Your driver's side door lock stopped responding to your key fob, forcing you to enter through the passenger door instead. This could be caused by a dead fob battery, a faulty door lock actuator, or a wiring issue in the electrical system. Getting this fixed will likely involve replacing the key fob battery first, then diagnosing the door lock actuator or electrical connections if the problem persists.

After starting your 2023 Toyota Corolla, you heard a chime sound and saw a red warning message appear on your dashboard. When you took the car to a dealer, they couldn't recreate the problem or figure out what was causing it. The vehicle wasn't repaired since the dealer couldn't identify the issue. Resolving this may require Toyota to investigate the electrical system or instrument cluster diagnostics.

When you use CarPlay navigation in your car, the GPS location drifts 10-20 feet off the actual road, causing the system to think you're in a nearby field or on a different highway and constantly recalculate your route. When you disconnect your phone from CarPlay, the GPS location on your phone itself returns to the correct position. The issue happens with multiple phones connected to your Corolla, but doesn't occur in other vehicles using the same phones. The dealer has been unable or unwilling to resolve the issue.

Your infotainment system won't let you adjust the volume for certain apps like YouTube when using Android Auto, even though audio is playing through your speakers. The system shows an error message telling you to start playing audio first, which forces you to take your hands off the wheel or eyes off the road to switch apps or adjust volume on your phone. This could be solved by allowing volume adjustment to work whenever audio is actually playing, regardless of what app is being used.

See attached document for complaint