1. Introduction
1.1 What is BMS (Battery Management System)?
"Battery Management System is a printed Circuit board assembly, which communicates with the BMSs (each module) and the powertrain/vehicle. Please check more details in another guide. Link
2. How to Diagnose
This alert could come because of one or more system/feature is disabled/faulty. It need to check additional alerts to find out the cause of this alert.
It could be possible to find out the exact cause via Remote Diagnosis, Service Mode.
2.1 How to check additional alert
It could be possible to find out exact cause via Remote Diagnosis, Service Mode. In case, you need support for diagnosis. Please contact us.
2.2 Remote Diagnosis
Please read more details about Remote Diagnosis in another guide (How to do, Cost etc.) Link If you need support. Please contact us.
2.3 Service Mode
It could be possible to do self diagnose via Service Mode.
How to read service alerts in Service Mode
- On the touchscreen, click Controls > Software
- Touch and hold the large word "MODEL" for 2 seconds and then release.
- Enter "service" as access code.
- After clicking on Service Alerts. You can read service alerts. If there is anything wrong with car. It will show in active alerts.
Please read more details in another guide (How to do diagnosis) Link
In case, If you need support for diagnosis. Please Connect Us.
If you need support. Please send us Service Alert Screenshot via Contact or Whats App +49 (0) 15226242038. We will be happy to help you to explain alert and how could be fixed, cost, support for fixing if possible online support or to organize an appointment with independent affordable workshop.
Depend on alert/fault code, car might need to be repaired/serviced.
3. How to Fix it
3.1 Restart System
Some of alert could resolve after restarting the touchscreen or power of the car.
Restart Touchscreen
Firstly, you could try with soft reset (restart touchscreen)
How to restart soft reset (restart touchscreen)
- Please shift car into park.
- Hold down both scroll buttons on the steering wheel until the touchscreen turns black.
- Please wait approximately 30 seconds for the touchscreen to restart.
Please read more details in another guide (how to do). Link
Powering Off the Car
If soft reset (restart touchscreen) have not resolved the alert/issue. You could try hard reset (Powering Off the car).
- Please shift car into park
- On the touchscreen please touch Controls > Safety > Power Off
- Please wait for at least for two minutes without interacting with the car. Please do not open the doors, touch the brake pedal, touch the touchscreen etc.
- After 2 minutes, please press the brake pedal or open the door to wake the car (Source Tesla)
3.2 Software issue
Some of alert could be related to software issue.
Firmware not Updated
One of main reasons could be that firmware is not updated. Have you checked recent update and updated to recent version? If not, we recommend you to do that. Please read more details in another guide. Link
Software Bug and Glitches
One of reason could be problem with software bug and glitches. Did you get alert after updating recent software version? If yes, it could resolve with future software version. Please send us Service Alert screenshot. So we will inform you if it could be related to bug.
3.3 Hardware Issue
Some of alert could come because of hardware issue.
4. BMS Alert codes
Depend on Alert/Warning/Fault Code, car need to be repaired/serviced. Please contact us if you need any support.
Some of common BMS alert code
4.1 Isolation Alerts
There could be internal or external isolation.
Possible code: BMS_a035_SW_Isolation, BMS_a151_SW_external_isolation, BMS_a123
Please check out more details about Isolation in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
4.2 Acceleration and top speed reduced
Possible Code: BMS_a170, BMS_u008,
Check out more details in another Blog. Link
4.3 Maximum battery charge level reduced
Possible code: BMS_u018
Check out more details in another blog. Link
4.4 Maximum Charge Level & Range Reduced
Check out more details in another blog. Link
4.5 Power Limited - OK to drive
Please check in another guide for more details. Link
4.6 Unable to Drive
Please check in another guide for more details. Link
4.7 Unable to Charge
Please check in another guide for more details. Link
4.8 Vehicle may not restart
4.9 BMS_w107
Please check out more details in another guide. Link
Cost
Cost could vary depend on issue, type of workshop, location. If you are looking for online support or affordable independent workshop, who is expert fixing BMS Alerts. Please free to contact us or have a look in Price List
Online Support
In case, if you have any question or need any support/help. Please feel to contact us Contact Us or Whats App +49 (0) 15226242038
Find, compare and Book workshop to Fix it
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Book an Appointment
If you would like to book an appointment.
Book an Appointment to Fix an affordable Workshop
Alert/Fault/Warning Code
a stands for Alert, f stands for Fault and w Stands for Warning
BMS_u018
BMS_u029
Buy New/Used Spare Parts
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FAQ
1. Can I reset Alert?
It is recommended to fix alert with ASAP.
2. Is it possible to repair BMS?
Yes, its possible
3. Who can repair BMS?
Please contact us. We will let you know.
