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Service procedures

Attempt to Clear Blocked Pack Contactors

ModelSX/tasks/PROC_BMS_X_CLEAR-BLOCKED-CONTACTORS

Model S / X (legacy)

What this task does

This routine will execute various Battery Management System (BMS) clear/reset routines in an attempt to clear blocked pack contactors. Keep in mind that even if all internal routines PASS, pack contactors may still be blocked from closing due to other extrinsic conditions.

Vehicle compatibility

Select your vehicle’s hardware to see task details, requirements, and inputs. Availability is confirmed after connection.

Model S / X (legacy) Legacy infotainment
Vehicle coverage
Pre-2021 Model S, Pre-2021 Model X
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Factory, DiagLinkActive, Service

Task inputs (0)

This task has no listed user inputs.

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BMS - Clear Isolation Counters

Clears the Battery Management System (BMS) isolation counters, which clears BMS_w/f027_SW_Drive_Iso_Repeated and BMS_w/f172_SW_Drive_Iso_Warning alerts. Execute this routine after repairing any isolation issue on the vehicle's High Voltage (HV) system. The BMS isolation counters latch the alerts BMS_w/f027 and BMS_w/f172 when reaching a specific count threshold.

PROC_BMS_X_CLEAR-ISOLATION-ALERT-COUNTERS

Model S / X (legacy)
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BMS CAN Communication Test

This routine will test if the Battery Management System (BMS) is communicating over CAN to the Gateway.

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Model S / X (legacy)
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BMS ECU Backup

This routine creates a backup copy of data from the Battery Management System (BMS) ECU and saves it onto the car computer. The backup data is needed when performing a BMS ECU Restore.

PROC_BMS_X_ECU-REPLACEMENT-BACKUP

Model S / X (legacy)
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BMS ECU Restore

This routine writes the most recently saved Battery Management System (BMS) ECU backup data on the car computer to the newly installed BMS. See Toolbox Article 6988500 for more specific details. Requirements: - New compatible BMS is installed - CAN Redeploy successfully completed to allow GTW unlock procedure - First responder loop disconnected (pack contactors open) - LV battery supported by a LV maintainer

PROC_BMS_X_ECU-REPLACEMENT-RESTORE

Model S / X (legacy)