1. Introduction
In this free guide, you will get information about how to diagnose the exact cause of this alert, what could be the reasons for this alert, how to fix it, How much it cost to fix, How to get online support, Find and compare best affordable workshop in your region and book an online appointment to fix alert, Information about spare part number and name and buy new and used spare parts with best price etc.
In case, if you are having model S and living in city where it rains so often or salt roads, humidity in the region. This could happen.
This issue could happen when voltage from brick could not be measure because of failed capacitors, sensor wire etc..
1.1 What could be the reasons
There could be issue with Bad Cell.
What is Cell?
Action to Do
It need diagnosis and if needed high voltage battery pack need to open, inspect and repair.
2. How to Diagnose
This alert could come because of one or more system/feature is disabled/faulty. The exact cause of this alert could be diagnosed with the help additional alerts.
2.1 How to check additional alert
It could be possible to find out exact cause via Remote Diagnosis, Service Mode. In case, if you need support to check additional alerts. Please Connect 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 Phone/Whats App +49(0)15226242038
2.3 Service Mode
It could be possible to find out the exact cause of the alert with the help of services alerts 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.
- 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 enable Service Mode) Link
In case, If you need support for diagnosis. Please Connect Us.
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 best affordable workshop.
Depend on alert/fault code, car might need to be repaired/serviced.
3. How to Fix it
Some of alert could come because of software bugs. Some of alert could resolve after restarting the system, software update/reinstall. To fix some of alerts, car might need hardware repair.
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.
Software Bug and Glitches
One of reason could be problem with software bug and glitches. Did you get this alert after updating recent software version? If yes, it could be related with software bug and could resolve with future software update. Please send us Service Alert screenshot. So we will inform you if it could be related to software bug. Link
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 make sure that the car latest software version. Please read more details in another guide. Link
3.3 Hardware Issue
There could be some hardware issue/faulty inside high voltage battery. Some of common hardware issues could be followings:
Recent Repair/Service
Did this alert pop up after recent repair/service? If yes, please let us know which repair/service was done recently. Some alerts could pop up if repair/service is not done in proper way. If system/alert has not be reset. Did you use aftermarket/used part?
Corrosion on Electronic Components
One of reason could be corroded electronic components (C26,C27, corrosion on the pins to the sensor harness etc.) because of water ingress, moisture, contamination etc. inside high voltage battery pack.
Capacitors
One of reasons could be that capacitors are going bad (corroded).
Loose Voltage Sensor Wire
One of most common reason could be that voltage sensor wire became loose.
Why voltage sensor wire could become lose?
One of reason to become lose wire could be accident, unusual impact etc.
Affected Model
Most affected Model X and S (100D P100D) produced in 2016-2021.
Broken cell sensors
Bad Cell
Broken seals
3. Tips
If you remove the HV Battery pack to fix the issue. It is recommended to remove every module and carefully inspect other BMBs and sensor connections. This process will take time and will cost you. However, if you do not do. There could be that the pack will fail again the same way when other BMBs die.
4 Cost to fix alert
Cost could vary depend on issue, type of workshop, location. If you are looking for online support or affordable independent workshop. Please feel to contact us Contact Us or Call/Whats App +49 (0) 15226242038 or have a look in Price List
4.1 Cost to repair with OEM Workshop/Service Center
Usually does not repair the battery. They will replace battery, which could couple of thousands Euro/Dollars.
4.2 Cost to fix with independent Workshop
Some of independent workshop who are specialist with Tesla High Voltage Battery could repair with really fraction of Euro/Dollars, which could save huge amount. If you are 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.
4.3 Cost to repair High Voltage Battery
Please read more details in another guide. Link
How to reset alert
This is latching alert and will not go away only repairing/fixing HV Battery. This alert could be reset via Toolbox after fixing/repairing the issue.
Repair Estimate
Please feel to Contact Us or Call/Whats App +49 (0) 15226242038. We will be happy to provide you estimate and book an appointment for you in best affordable workshop
Online Support
In case, if you have any question or need any support/help. Please feel to contact us Contact Us or Call/Whats App +49 (0) 15226242038.
Find, compare and Book best affordable workshop to Fix it
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 Alert
If you would like to book an appointment.
Book an appointment to fix alert in an affordable Workshop
Buy New/Used Spare Parts
If you would like to buy new/used spare parts. Please have a look in our catalog or Contact Us Phone/Whats App +49(0)15226242038
Alert Code
Some of most common possible alert code
- BMS_w107
- BMS_w107_SW_Cell_Voltage_Sensor
- BMS_f107
- BMS_f107_SW_Cell_Voltage_Sensor
Please send us "Service Alert" Screenshot via Contact or Whats App +49 (0) 15226242038. We will be happy to help to fix alert.
Donation/Support
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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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Frequently Asked Questions (FAQs)
Can I do at Local Workshop, Independent Tesla Workshop?
Yes, you can. However, please make sure that workshop knows how to work to Tesla Cars. If local workshop need any support. Please feel to contact us. We will be happy to provide online shop. You can also find workshop in our Workshop Locator.
Can I do it/repair yourself/myself (DIY)?
Some of repair could be done at DIY. In case, if you needed Tools, Know-How, Time etc. Please feel to contact us. We will be happy to provide you online support.
Note: Please do not work with high voltage components. If you do not need needed/proper Tools, Know-How etc. It could be dangerous.
Mobile repair service?
In some of cases, we could also provide mobile services. Please feel to contact us where are you located and what kind of repair are you looking for.
Car not under warranty, salvage, accident, flood, modified cars?
It is highly recommended to perform repair with independent workshop to save money.
Car under warranty?
In case if your car is under warranty. It is recommended to perform certain repair works (HV Components, ADAS etc) with OEM during warranty period. Wear and Tear Part Repair could be done with independent workshop to save money. Please read more details in another guide. Link
Alert still appearing after repair?
There could be many reasons. Some of reasons could be please make sure that repair was done in correct way, did you restart system after performing repair? did you Reinstall Firmware? Still appearing alert: Please free to Contact Us. We will be happy to provide you online support. Phone/Whats App +49(0)15226242038
