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Service procedures 2026 firmware

Configure Charger as Master

ModelS/tasks/PROC_CHG_X_CHARGER-CONFIG-SET-MASTER

What this task does

Configures connected charger as Master. Script Designed to work together with PROC_CHG_X_CHARGER-STATUS Works only with Gen1 and Gen2 chargers. Before performing configuration; -Enter service mode and perform GTW unlock procedure.

Vehicle & firmware coverage

Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.

Model S / X (legacy) Legacy infotainment · Firmware 2026.14.6
Vehicle coverage
Pre-2021 Model S
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Factory, Service

Task inputs (0)

No user inputs are listed in this firmware.

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Service procedures

Charger Configuration Status

Displays information about connected chargers and if they are configured as Master or Slave. Designed to be used together with PROC_CHG_X_CHARGER-CONFIG-SET-MASTER and PROC_CHG_X_CHARGER-CONFIG-SET-SLAVE to configure new or replaced chargers. When working on the chargers connect the car to 12V support. Disconnecting the chargers will run power off the 12V battery and the car will become unresponsive quickly. Only one charger can be connected at a time for the configuration. Before reading status or performing any configuration; --Enter service mode and perform GTW unlock procedure. If adding a second charger ; --Set the current charger as Slave and disconnect it. --Connect the new charger and configure it as Master --Connect both chargers and make sure they are being detected --Run Status script again to read Out the 'Charger types'. Write Charger type to GTW using the infotainment dashboard in Tbx3. If replacing a single charger ; --Connect new charger in place of old one. --New charger should be set as Master, no configuration needed. --Run Status script to read Out the 'Charger type'. Write Charger type to GTW using the infotainment dashboard in Tbx3. Important Note ! --In a dual charger configuration, the charger behind the driver seat has to be set as Slave and the Master is positioned behind the passenger. --New charger are by default configured as Master

PROC_CHG_X_CHARGER-STATUS

Model S / X (legacy)
Service procedures

Clear Disable Fast Charge Flag

This task will clear the disable fast charge flag on the charger. This flag can become set if the charger detects low differential resistance on the FC link during the leakage test.

PROC_CHG_X_CLEAR-FAST-CHARGE-DISABLED

Model S / X (legacy)
Service procedures

Configure Charger as Slave

Configures connected charger as Slave. Script Designed to work together with PROC_CHG_X_CHARGER-STATUS Works only with Gen1 and Gen2 chargers. Before performing configuration; -Enter service mode and perform GTW unlock procedure.

PROC_CHG_X_CHARGER-CONFIG-SET-SLAVE

Model S / X (legacy)