We got 2 Model Y LR AWDs in mid-December. This morning we went to open the door of one of them and nothing would happen. The app was perpetually trying to connect. The screen would not illuminate. Key card did nothing. So, I call Tesla Support and they say the 12V battery is discharged and needs to be replaced. The girl acted like we should’ve known... we never got any warnings on the app or car.
Thankfully they were able to get mobile service to us within a couple hours. He replaced the 12V battery and starts doing diagnostics and discovers a stored fault in the rear drive unit. He said it’s an “isolation” fault causing the contactor to never disconnect leading to perpetual battery drain. It will either need a new rear drive motor or possibly a “card” in the drive motor could be replaced. With only 800 miles on the odometer it’s a bit disappointing that it now has to be towed 170 miles away for a repair, but what do you do. Things happen with any car, I’m just hoping it’s not signs of things to come.
Both are late-November production. The ranger said he’s never seen this exact issue, but supposedly Tesla updated the motor on the new 3/Ys with these replaceable cards (not sure if he is talking about a computer chip in the motor or what) but he said usually that’s the point of failure for the motors. I guess before they were replacing entire motors when just this one card could be replaced. So now in most cases it’s just a part swap instead of entire new motor.
Has anyone else experienced this issue? I searched for Model Y rear drive motor issues and didn’t really see a trend of this being a documented issue.
Thankfully they were able to get mobile service to us within a couple hours. He replaced the 12V battery and starts doing diagnostics and discovers a stored fault in the rear drive unit. He said it’s an “isolation” fault causing the contactor to never disconnect leading to perpetual battery drain. It will either need a new rear drive motor or possibly a “card” in the drive motor could be replaced. With only 800 miles on the odometer it’s a bit disappointing that it now has to be towed 170 miles away for a repair, but what do you do. Things happen with any car, I’m just hoping it’s not signs of things to come.
Both are late-November production. The ranger said he’s never seen this exact issue, but supposedly Tesla updated the motor on the new 3/Ys with these replaceable cards (not sure if he is talking about a computer chip in the motor or what) but he said usually that’s the point of failure for the motors. I guess before they were replacing entire motors when just this one card could be replaced. So now in most cases it’s just a part swap instead of entire new motor.
Has anyone else experienced this issue? I searched for Model Y rear drive motor issues and didn’t really see a trend of this being a documented issue.