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Service procedures 2026 firmware

EPB - Enter Service Mode

Gen3/tasks/PROC_EPB_X_SERVICE-MODE

What this task does

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.

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, Service, ServiceDrive

Procedure notes

The vehicle might free roll when releasing the brake pedal. Make sure the vehicle is on a flat surface or a lift. Ensure the surrounding area is safe.

Task inputs (2)

EPB Selection

ActionTarget · String

Select whether to perform the routine on BOTH EPBs or just the LEFT/RIGHT EPB.

Firmware default: BOTH

Options: LEFT, RIGHT, BOTH

Action Selection

ActionType · String

Select whether to start or stop service mode on the EPB(s) selected above.

Firmware default: START

Options: START, STOP

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, Service, ServiceDrive

Procedure notes

The vehicle might free roll when releasing the brake pedal. Make sure the vehicle is on a flat surface or a lift. Ensure the surrounding area is safe.

Task inputs (2)

EPB Selection

ActionTarget · String

Select whether to perform the routine on BOTH EPBs or just the LEFT/RIGHT EPB.

Firmware default: BOTH

Options: LEFT, RIGHT, BOTH

Action Selection

ActionType · String

Select whether to start or stop service mode on the EPB(s) selected above.

Firmware default: START

Options: START, STOP

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, Service, ServiceDrive

Procedure notes

The vehicle might free roll when releasing the brake pedal. Make sure the vehicle is on a flat surface or a lift. Ensure the surrounding area is safe.

Task inputs (2)

EPB Selection

ActionTarget · String

Select whether to perform the routine on BOTH EPBs or just the LEFT/RIGHT EPB.

Firmware default: BOTH

Options: LEFT, RIGHT, BOTH

Action Selection

ActionType · String

Select whether to start or stop service mode on the EPB(s) selected above.

Firmware default: START

Options: START, STOP

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Service procedures

EPB Brakepad Test

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.

PROC_EPB_X_BRAKEPAD-LEFT

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+)