Last week my 2013 Signature P85 Model S showed an error message when I entered the car in the morning:
BMS_U029 Maximum battery charge level reduced - Driving Ok, make a service appointment
The batterypack was replaced less than 2 years ago under warranty and has less than 16K miles on it.
I had just charged the car the day before from 2% to 96% and the error showed up with a SoC of +-84%
I did a scroll wheels+brake reset and shutdown the car for 10 minutes as advised by the SC, but the error remained.
The SC managed to book me an appointment the next day to perform a diagnosis since they said they wouldn't be able to perform a proper diagnosis remote.
Not even 15 minutes after that call I got an email requesting acceptance for a €12.000,- quote for a batterypack replacement.
When calling the SC I was told that they were able to remotely diagnose the issue and that the batterypack has an internal failure.
I tried charging my model S the next day with a 50% SoC, but immediately got a "charging complete" notification on the app.
The next day I was able to charge my car from a 35% SoC to 40% with the mobile adapter before getting the notification.
I found a tip that resetting to factory settings would remove the error message, after the factory reset the message was gone and I was able to charge the car to the set SoC of 90%
The next day the message reappeared and stayed after a scroll wheels+brake reset and shutdown.
During that day I installed a software update and after the update the message was gone and I haven't seen the message again and I have charged to 90% multiple times already.
Because they first couldn't remote diagnose this problem and then suddenly could less than 15 minutes later and because they couldn't/wouldn't tell me what exactly had failed other than the generic internal failure, I highly doubt the service center performed a diagnose and instead just told me to get a battery replacement based on the error code.
Has anyone ever experienced a similar error message disappearing and was still able to put a lot of miles on their batterypack without issues after?
BMS_U029 Maximum battery charge level reduced - Driving Ok, make a service appointment
The batterypack was replaced less than 2 years ago under warranty and has less than 16K miles on it.
I had just charged the car the day before from 2% to 96% and the error showed up with a SoC of +-84%
I did a scroll wheels+brake reset and shutdown the car for 10 minutes as advised by the SC, but the error remained.
The SC managed to book me an appointment the next day to perform a diagnosis since they said they wouldn't be able to perform a proper diagnosis remote.
Not even 15 minutes after that call I got an email requesting acceptance for a €12.000,- quote for a batterypack replacement.
When calling the SC I was told that they were able to remotely diagnose the issue and that the batterypack has an internal failure.
I tried charging my model S the next day with a 50% SoC, but immediately got a "charging complete" notification on the app.
The next day I was able to charge my car from a 35% SoC to 40% with the mobile adapter before getting the notification.
I found a tip that resetting to factory settings would remove the error message, after the factory reset the message was gone and I was able to charge the car to the set SoC of 90%
The next day the message reappeared and stayed after a scroll wheels+brake reset and shutdown.
During that day I installed a software update and after the update the message was gone and I haven't seen the message again and I have charged to 90% multiple times already.
Because they first couldn't remote diagnose this problem and then suddenly could less than 15 minutes later and because they couldn't/wouldn't tell me what exactly had failed other than the generic internal failure, I highly doubt the service center performed a diagnose and instead just told me to get a battery replacement based on the error code.
Has anyone ever experienced a similar error message disappearing and was still able to put a lot of miles on their batterypack without issues after?