1. Introduction
This is common issue for Model S. In case, if you are living in city where it rains so often or salt roads, humidity in the region.
1.1 What could be the reasons
There could be issue with Bad Cell.
What is Cell?
Action to Do
Car need to to diagnosis and if needed high voltage need to open, inspect and repair.
2. How to Fix
2.1 Loose Voltage Sensor Wire
One of reason could be that voltage sensor wire became loose.
2.2 Broken cell sensors
2.3 Bad Cell
2.4 Broken seals
2.5 Corrosion on Electronic Components
One of reason could be corroded electronic components
2.6 Capacitors
One of reasons could be that capacitors are going bad.
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 the pack will fail again the same way when other BMBs die.
Cost
Cost could vary depend on issue, type of workshop, location. If you are looking for online support or affordable independent workshop. Please free to contact us or have a look in Price List
Alert Code
Possible alert code
- BMS_w107
- BMS_w107_SW_Cell_Voltage_Sensor
- BMS_f107
- BMS_f107_SW_Cell_Voltage_Sensor
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