Service procedures
End EPBL Service Mode
Ends service mode on the left EPB
PROC_EPBL_STOP-SERVICE-MODE
Model 3 / Y
Model S / X (2021+)
Communication checks
2026 firmware
EPBL Connection Test
Gen3/tasks/PING-TP_EPBL
What this task does
Tests the communication of the Left Electronic Parking Brake (EPBL) Electronic Control Unit (ECU). Communication is established via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).
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
- No specific level listed
Procedure notes
When communication is established, the test will succeed. If the test fails, inspect wiring and ensure ECU is powered.
Task inputs (0)
No user inputs are listed in this firmware.
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
- No specific level listed
Procedure notes
When communication is established, the test will succeed. If the test fails, inspect wiring and ensure ECU is powered.
Task inputs (0)
No user inputs are listed in this firmware.
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
- No specific level listed
Procedure notes
When communication is established, the test will succeed. If the test fails, inspect wiring and ensure ECU is powered.
Task inputs (0)
No user inputs are listed in this firmware.
Related service tasks
Browse all tasks →
ECU resets
EPBL UDS ECU Reset
Resets the Left Electronic Parking Brake (EPBL) Electronic Control Unit (ECU). Reset is executed via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).
TEST-RESET_EPBL
Model 3 / Y
Model S / X (2021+)
Self-tests
Left Front Seat Fan Test
Tests current of the front left seat controlled by the Left Electronic Parking Brake (EPBL) Electronic Control Unit (ECU).
TEST-SELF_EPBL_FRONT_SEAT-FAN
Model 3 / Y
Service procedures
Relearn EPBL config (WARNING incorrect config could result in EPB malfunction including vehicle rollaway)
Clears current EPBL config and learns new config from gtw car configs. Only use after replacing EPB hardware where gtw config change was required.
PROC_EPBL_CLEAR-BRAKE-HW-TYPE
Model 3 / Y
Model S / X (2021+)