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ECU resets 2026 firmware

Reset BCCEN

ModelX/tasks/TEST-RESET_BCCEN

What this task does

Send a hard reset ECU command to the BCCEN

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 X
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
Service, Factory, DiagLinkActive

Procedure notes

Will lose keyfob connections temporarily

Task inputs (0)

No user inputs are listed in this firmware.

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Communication checks

BCCEN CAN Communication

Tests communication with the Body Controller (BCCEN) Electronic Control Unit (ECU). Communication is established via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).

PING-TP_BCCEN

Model S / X (legacy)
Service procedures

Calibrate Steering Column

This test calibrates the steering column. When the calibration is run, the steering column will first move all the way in, then move out to the endpoint. Next, the up/down axis will be calibrated in the same manner. The calibration routine is used to set the zero position of both axes and to determine the number of motor encoder counts it takes to reach the other end point of the column's travel.

PROC_BCCEN_X_CALIBRATE-STEERING-COLUMN

Model S / X (legacy)
Service procedures

Immobilizer Reset

This routine is used to reset the drive unit immobilizer key. This re-learns the code that pairs the drive unit with the security controller (BCCEN). This routine needs to be performed when either the security controller is replaced or the drive unit is permanently removed from a vehicle.

PROC_BCCEN_X_IMMOBILIZER-RESET

Model S / X (legacy)
Diagnostic tests

Intrusion Detection Test

This routine runs on the central body controller (BCCEN) and verifies that the Intrusion Tilt Sensor and Battery Backed Siren have been installed and are functioning correctly.

TEST_BCCEN_X_INTRUSION-DETECTION

Model S / X (legacy)