Navigational (global Positioning System) Gps problems of the 2021 Tesla Model Y

On June 7, 2026, my 2021 Tesla Model Y with approximately 37,131 miles became completely unresponsive and could not be driven. Tesla mobile service replaced the 12v low-voltage battery on June 11, 2026. The official repair notes stated that the battery was replaced, proper operation was verified, there were no active alerts, and the vehicle was in excellent condition. Shortly after this repair, multiple vehicle systems stopped functioning, including all cameras, navigation/gps, and software/firmware updates. Tesla service later diagnosed the vehicle as requiring replacement of the hw3 vehicle computer at a cost of approximately $3,066. The loss of camera functionality disabled or affected multiple driver assistance features that rely on the camera system. The vehicle has been unavailable for approximately one month while awaiting repair. During discussions with Tesla service regarding the diagnosis, I was informed verbally by the service manager that they see similar hw3 computer-related issues on a regular basis (approximately every other week). I cannot independently verify that statement, but I am including it because it contributed to my concern that this may not be an isolated incident. I am not asserting the root cause of the failure. I am submitting this complaint because the loss of the vehicle’s camera system and related driver assistance functionality may represent a potential safety concern, and I believe NHTSA should be aware of this incident.

While traveling at approximately 80 mph with full self-driving (supervised) engaged, my vehicle experienced a simultaneous failure of the full self-driving computer and the media control unit (mcu) touchscreen. Without any prior warning, the touchscreen went completely black, and the vehicle immediately executed an uncommanded, sharp steering maneuver into the right lane. It was very apparent that if I didn’t take over it was going to continue crossing highway lanes and go off road. I have around 45k miles specifically on fsd and never has it failed in such an extreme manner. This sudden steering input put myself and other motorists at extreme risk of a high-speed collision or roadway departure. I was forced to physically overpower the steering wheel to maintain lane integrity and prevent a crash at highway speeds. The failure appeared to be a total loss of the vehicle’s primary visualization and automated steering systems, leaving me with no digital feedback regarding speed or surrounding traffic while the car was still in motion. Prior to this event, there were no warning lamps or symptoms such as gps drifting or screen lag. I have since attempted a hard reset and a full power cycle, but the critical nature of this uncommanded steering at 80 mph suggests a systemic defect in how fsd manages hardware or software failures. The vehicle and its internal data logs are available for inspection upon request. This incident has been documented in the Tesla app under a service request for a full log review.

My car is having issues with downloading the software and installing it. It usually happens during the summer. 2025 summer I booked an appointment and visited the Tesla service center. They diagnosed and told me the ecu is having trouble and need to replace same. Its cost around usd 4k. My car faced this issue right after the warranty is over. First the high voltage batter died next day the warranty got over, but they replaced it under battery warranty. But ecu issue they want me to pay for the same. Its a huge cost and I do see lot of customers keep complaining about the same/similar issues all over internet. It looks like a wide spread issue which Tesla ecu fail after the warranty get over. Biggest challenge for the customers are, no navigation, gps is not working, all the cameras goes blind, lane assistant doesn't work. Dashcam recording doesn't work. Technically we can just charge the car and drive. No safety features work as expected.

The rear view camera didn't work, neither did the windshield wiper. When turning left or right, the sensors did not display anything, the display no longer displayed any distances to other cars, proximity lines, nor speed limits. Gps also did not work. The problems were confirmed by the dealer (and fixed), but they charged us even though the incident involved a software update on their part that made most advanced safety features unavailable available. When we tried to reverse, we could not see anything. When we tried to make a left or right turn, there were no sensors available to sense blind spots. When we tried to understand the speed limit or change lanes, the information was not available. Wipers were patchy in use auto pilot also did not work. Warnings kept beeping while driving, but we could not turn it off, serving as a distraction to driver, but Tesla was unable to address the repair due to their mass recall of other cars (with similar issues).