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Service procedures 2026 firmware

EPB Brakepad Test

Gen3/tasks/PROC_EPB_X_BRAKEPAD-LEFT

Model 3 / YModel S / X (2021+)

What this task does

Starts brakepad test on left EPB. Note that this routine will perform a service release and subsequent apply on one side, the vehicle should not free-roll if the other side is applied properly but may become free rolling if a brakepad is missing or the car is on a sufficient grade.

Vehicle & firmware coverage

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

Model 3 / Y AMD · Firmware 2026.32.3
Vehicle coverage
2024+ Model 3, 2025+ Model Y, Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked; Stationary · Neutral
Gateway diagnostic level
DiagLinkActive, Factory

Procedure notes

WARNING: The vehicle may free roll when routine is running if there is an issue with the opposite side parking brake or brakepads! Make sure the vehicle is on a flat surface or a lift, and surrounding area is safe. If left EPB was unparked, it will be parked after execution.

Task inputs (1)

Injected Inputs for Routine Evaluation

eval_inputs · Dict

Dict formatted inputs formatted to adjust what routine is evaluated against (pass/fail).

Firmware default: []

Model 3 / Y Intel · Firmware 2026.32.7
Vehicle coverage
Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked; Stationary · Neutral
Gateway diagnostic level
DiagLinkActive, Factory

Procedure notes

WARNING: The vehicle may free roll when routine is running if there is an issue with the opposite side parking brake or brakepads! Make sure the vehicle is on a flat surface or a lift, and surrounding area is safe. If left EPB was unparked, it will be parked after execution.

Task inputs (1)

Injected Inputs for Routine Evaluation

eval_inputs · Dict

Dict formatted inputs formatted to adjust what routine is evaluated against (pass/fail).

Firmware default: []

Model S / X (2021+) AMD · Firmware 2026.20.6.1
Vehicle coverage
2021+ Model S, 2021+ Model X
Supported connection
Local connection
Vehicle state
Stationary · Parked; Stationary · Neutral
Gateway diagnostic level
DiagLinkActive, Factory

Procedure notes

WARNING: The vehicle may free roll when routine is running if there is an issue with the opposite side parking brake or brakepads! Make sure the vehicle is on a flat surface or a lift, and surrounding area is safe. If left EPB was unparked, it will be parked after execution.

Task inputs (1)

Injected Inputs for Routine Evaluation

eval_inputs · Dict

Dict formatted inputs formatted to adjust what routine is evaluated against (pass/fail).

Firmware default: []

Related service tasks

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Service procedures

EPB - Enter Service Mode

Starts or stops Service Mode on either one or both Electronic Parking Brakes (EPB). Service Mode fully retracts the caliper piston. For this routine to run successfully, the brake pedal must be pressed to enter Service Mode. To stop EPB Service Mode, run this routine again with STOP input or manually apply the Parking brake in the Control Safety settings. Brake Pedal must be pressed.

PROC_EPB_X_SERVICE-MODE

Model 3 / Y Model S / X (2021+)
Service procedures

EPB Brakepad Test

Starts brakepad test on right EPB. Note that this routine will perform a service release and subsequent apply on one side, the vehicle should not free-roll if the other side is applied properly but may become free rolling if a brakepad is missing or the car is on a sufficient grade.

PROC_EPB_X_BRAKEPAD-RIGHT

Model 3 / Y Model S / X (2021+)
Service procedures

EPB Brakepad Test

Starts brakepad test on left or right. Note that this routine will perform a service release and subsequent apply on one side, the vehicle should not free-roll if the other side is applied properly but may become free rolling if a brakepad is missing or the car is on a sufficient grade.

PROC_EPB_X_BRAKEPAD-TEST

Model 3 / Y Model S / X (2021+)