1. Introduction
This is a generic alert, and there may be various reasons for its occurrence.
In this guide, you will get following information:
- How to diagnose the exact cause of the alert
- Possible causes for the alert
- How to fix and clear
- Estimated cost to resolve the alert
- How to get quick, easy and affordable remote support (Whats App +49(0)15226242038)
Remote Support
Feel free to contact us on Whats App +49(0)15226242038. We are happy to assist with remote diagnosis and provide support to clear alerts at affordable prices.
Book an appointment to resolve alert
You will also be able to find and compare the most affordable workshop in your region and book an online appointment to resolve the alert.
Spare Parts
Additionally, this guide provide information about spare part number and names. You can also buy new, used, remanufactured spare parts at best prices.
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 about BMS in another guide. Link
2. How to Diagnose
This alert may occur because one or more system or features are disabled or faulty. The exact cause of the alert can be diagnosed with the help additional alerts.
2.1 How to check additional alert
Additional alerts can be checked via Remote Diagnosis or Service Mode.
If you need support to check additional alerts, feel free to Connect Us Phone/Whats App +49(0)15226242038
2.2 Remote Diagnosis
Remote diagnosis will provide the exact cause of the alert. We offer Remote Diagnosis. To learn more about Remote Diagnosis
- How it work
- Cost
Please refer our another guide
If you need support, feel free to Contact Us Phone/Whats App +49(0)15226242038
2.3 Service Mode
In some cases, it can be be possible to find out the exact cause of the alert in Service Mode with the help of following details:
- Service Alerts in Service Mode
- Self-Diagnose in Service Mode
How to check service alerts in Service Mode
- On the touchscreen, click Controls (vehicle icon) > Software
- Touch and hold the large word "MODEL" for 4 seconds and then release.
- Enter "service" as access code (password).
- Clicking Service Alerts to view active and recent alerts. If there is any issue, it will appear in Service Alerts.
For more information, please refer another guide (How to do enable Service Mode) Link
If you need support for diagnosis, please feel free to Connect Us or Whats App +49 (0) 15226242038
Send us Service Alerts Photos to clear alerts
Please send us "Service Alert" photos via Contact or Whats App +49 (0) 15226242038.
We will be happy to help you to clear alerts.
3. How to Fix it
Some alerts may be resolved by restarting the system, updating the software, reinstalling the software, repairing the hardware, or performing a reset.
3.1 Restart System
Some alerts may be resolved by restarting the touchscreen or powering of the car.
Restart the Touchscreen
First, you can try a soft reset (touchscreen reset).
How to perform a Soft Reset (Restart the Touchscreen)
- Shift the car into park.
- Press and hold both scroll buttons on the steering wheel until the touchscreen turns black.
- Wait approximately 30 seconds for the touchscreen to restart.
For more details, please refer another guide on how to perform these steps Link
Powering Off the Car
If a soft reset (touchscreen restart) has not resolved the alert or issue, you can try a hard reset (powering off the car).
How to Perform a Hard Reset
- Shift the car into park
- On the touchscreen, go to Controls > Safety > Power Off
- Wait at least for two minutes without interacting with the car. Do not open the doors, press the brake pedal, or touch the touchscreen etc.
- After two minutes, press the brake pedal or open the door to wake the car (Source Tesla)
3.2 Software fix
Some alert may be related to software bugs or glitches.
Software Bug and Glitches
One possible reason could be software bug or glitches.
- Did you receive this alert after updating recent software version?
- If yes, it could be related to a software bug and may be resolved in a future software update.
- Please send us screenshot of the Service Alert, and we will inform you if it could be related to software bug. Link
Firmware not Updated
One of the main reasons could be that firmware is not updated.
-
Have you checked for the latest software update and installed the most recent version?
- If not, it is recommended to install latest software version.
- Please ensure that your car is running the latest software version.
How to install latest software version
Controls > Software > Update Available
For more details, please refer to another guide how to install the latest software version. Link
3.3 Hardware Issue
There may be hardware issue or faulty component. Some of common hardware issues include:
Recent Repair
Some alerts may appear if repair was not done properly or if system was not reset.
Did this alert appear after recent repair or service?
- If yes, please let us know which repair or service was performed.
Did you use aftermarket, used spare part?
Other Hardware issues
Please send us a screenshot or video of your car service alerts, along with your car model and year.
Describe issue as much as you can etc. We will be happy to provide you remote diagnosis and support to clear alerts.
Due to trade secrets, we can not share certain details here.
Feel free to Contact us or Whats App +49 (0) 15226242038. We will be happy to help you to clear the alerts.
4. BMS alert codes
Depend on Alert/Warning/Fault Code, car need to be repaired/serviced. Please contact us if you need any support.
We have made list with some of most common BMS alert code. If you do not see BMS alert code, which you got in your car, please contact us, we will be happy to provide you more information and help you to clear alerts.
4.1 Isolation Alerts (BMS_a035, BMS_w123, BMS_w142 BMS_f151)
There may be low internal or external isolation.
4.1.1 External Isolation (BMS_a035, BMS_w142 BMS_f151)
Please check out more details about External Isolation in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
Possible alert codes:
- BMS_a035_SW_Isolation
- BMS_a151_SW_external_isolation
4.1.2 Internal Isolation (BMS_w123)
In case if you have internal isolation (possible alert code BMS_a123). Please read more details in another guide. Link
Possible code: BMS_a123
4.2 Acceleration and top speed reduced
Possible Code: BMS_a170, BMS_u008,
Please check out more details in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
4.3 Maximum battery charge level reduced
Possible code: BMS_u018
Please check out more details in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
4.4 Maximum Charge Level and Range Reduced
Please check out more details in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
4.5 Power Limited - OK to drive
Please check out more details in another guide (How to fix, Cost, best workshop to fix it, online support etc). Link
4.6 Power Reduced
Please check in another guide for more details. Link
4.7 Unable to Drive
Please check in another guide for more details. Link
4.8 Unable to Charge
Please check in another guide for more details. Link
4.9 Vehicle may not restart
Please read more details in another guide. Link
4.10 VHS (Voltage Harness Sense)
BMS_w107, BMS_w177, BMS_a129
Please check out more details in another guide. Link
Mobile Application to Clear Alerts
Our mobile application allows to clear some of alerts codes.
Please reach out us for access Whats App +49(0)15226242038. We can provide have access for it.
Disclaimer/Note: Application is still in Development and internal testing phase with our close workshop partners, if you wish access and would like to help us in testing, Please reach us.
Mobile Application to read High Voltage Battery Health
Our mobile application read and shows different kind of high voltage battery readings (brick/cell voltage, Vmax, Vmin, Vdiff etc.)
Please reach out us for access Whats App +49(0)15226242038. We can provide have access for it.
Disclaimer/Note: Application is still in Development and internal testing phase with our close workshop partners, if you wish access and would like to test, Please reach us.
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
Where can I fix?
It could be possible to only fix at particular workshop who has knowledge/expertise about Tesla/Electric Cars. There are some independent workshop who are good and offer repair services with affordable prices. If you are looking. Please free to contact us.
If its possible, we could also offer online support.
Find, compare and Book workshop to Fix BMS Alert
If are you looking for best workshop who is expert to fix such issue with good price. Please contact us we will be happy to organize an appointment with workshop or find, compare and book best workshop in Workshop Locator
Book an Appointment to fix BMS Alert
If you would like to book an appointment.
Book an Appointment to Fix an affordable Workshop
BMS Alert/Fault/Warning Code
a stands for Alert, f stands for Fault and w Stands for Warning
In case if you have any alert from below list. Please click on alert code and will open new page with repair guide for specific alert code.
BMS_u018
BMS_u029
BMS_w142
BMS_a170
Buy New/Used Spare Parts
If you would like to buy spare parts. Please have a look in our catalog or Contact Us Phone/Whats App +49(0)15226242038
Donation/Support
If you feel you have benefited from this guide. Please consider donation, which will help us to create more such free guide for you. It will also show us that this guide was helpful for you.
For Repair Workshop Owner
If you car repair workshop owner and would like to add your workshop in our list. Please contact us.
For Car Mechanic
There are some car owner who like to buy spare parts from OEM or Aftermarket and prefer to do Mobile Service, DIY or need support. If you would like to offer this services to car owner in your region. Please contact us.
Comment
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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.
