Electronic Parking Brake Motor

Replacement of the electronic parking brake (EPB) motor/actuator on a 2024 Tesla Cybertruck Dual Motor AWD. The EPB motors are integrated into the rear brake calipers and require placing the system into service mode before removal.

Warnings

Tools required

Parts

• Electronic Parking Brake Motor/Actuator (rear caliper integrated) × 1 — Tesla Cybertruck rear EPB actuator — confirm part number with VIN at parts counter
• EPB actuator-to-caliper seal/gasket (if supplied separately) × 1 — OEM seal kit per service manual
• Caliper bolt thread locker (medium strength) × 1 — Loctite 243 or equivalent

Preparation

1. Park on level ground, place in P, and engage parking brake (it will be released later via service mode).
2. Exit ALL doors with the key fob/phone key carried away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Disconnect the 48V low-voltage battery per the manufacturer-specified procedure for Cybertruck (48V architecture — do NOT use 12V Tesla disconnect procedures).
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal on the 800V system.
5. If at any point you encounter an orange cable, an HV component, or are unsure if a system is de-energized: STOP and consult a Tesla-certified technician.
6. Before disconnecting low-voltage power: enter the touchscreen Service Mode and place the EPB into 'Service / Pad Replacement' mode so the caliper pistons retract and the actuator is unloaded.
7. Loosen rear wheel lug nuts while the vehicle is on the ground.
8. Raise the rear of the vehicle and support on jack stands rated for the Cybertruck's weight. Note: with air suspension, place suspension into Jack Mode via the touchscreen before lifting.
9. Remove the rear wheel(s) on the affected side(s).

Procedure

1. 1

   Confirm EPB is in Service Mode
   Verify on the touchscreen (or by audible actuator retraction) that the EPB has fully released into service mode. If the actuator is still clamped, do not proceed — the spindle is under load and removal will damage internal components.
   ⚠Removing a clamped EPB actuator can crack the housing and damage the caliper piston screw drive.
2. 2

   Locate and access the EPB actuator
   The EPB motor is mounted to the rear of the rear brake caliper body. Clean debris from around the actuator with brake cleaner and a brush so contamination does not enter the caliper when the actuator is removed.
3. 3

   Disconnect the EPB electrical connector
   Release the connector lock tab and disconnect the EPB motor harness connector. Inspect the connector and pins for corrosion or damage. Note routing of the harness for reinstallation; secure the harness aside so it is not pinched during work.
   ℹ️Cybertruck 48V connectors differ from legacy Tesla 12V connectors — do not force-fit or substitute.
4. 4

   (Optional) Remove caliper for bench access
   If the actuator cannot be cleanly accessed in-vehicle, remove the rear caliper. Remove the caliper slide pin bolts (or caliper bracket bolts as applicable to the Cybertruck rear caliper design — refer to Tesla Service Manual to identify the correct fasteners). Support the caliper with a hanger; do not let it hang by the flex hose.
   ⚠Do not disconnect the hydraulic brake line unless absolutely necessary — doing so requires bleeding the brake system afterward.
   Torque spec

   Caliper Slide Pin Bolts35 Nm (26 lb-ft)

   Caliper Bolts88 Nm (65 lb-ft)
5. 5

   Remove EPB actuator mounting fasteners
   Remove the fasteners (typically Torx) securing the EPB motor/actuator to the caliper body. Keep fasteners organized; some may require replacement per the service manual. Torque on reinstall to OEM specification — refer to Tesla Service Manual.
6. 6

   Separate EPB actuator from caliper
   Carefully pull the actuator straight off the caliper body. The actuator engages an internal spindle drive in the caliper piston — do not pry aggressively. Inspect and capture any seal, O-ring, or gasket for inspection. If the spindle did not retract fully (because service mode was not engaged), STOP.
   ⚠Do not rotate the caliper internal spindle manually with hand tools unless the service manual specifies a safe procedure — this can damage the piston assembly.
7. 7

   Inspect caliper interface
   Inspect the actuator mounting face on the caliper for corrosion, debris, or damaged sealing surface. Clean with a lint-free cloth. Replace the seal/gasket with new hardware from the actuator kit if supplied.
8. 8

   Install new EPB actuator
   Align the new actuator drive coupling to the caliper spindle and seat the actuator squarely against the caliper. Do not force — if it will not seat, the drive coupling is misaligned. Install the mounting fasteners hand-tight, then torque to OEM specification — refer to Tesla Service Manual.
9. 9

   Reconnect EPB harness
   Reconnect the electrical connector until the lock tab fully engages. Verify harness routing matches the original to avoid contact with the rotor, suspension components, or heat sources.
10. 10

    Reinstall caliper (if removed)
    If the caliper was removed, reinstall using thread locker on caliper bolts and silicone brake grease on slide pins as applicable. Torque caliper hardware to verified specifications.
    Torque spec

    Caliper Bolts88 Nm (65 lb-ft)

    Caliper Slide Pin Bolts35 Nm (26 lb-ft)

Reassembly

1. Reinstall the rear wheel and hand-thread all lug nuts before lowering.
2. Lower the vehicle so wheels contact the ground, then torque lug nuts in a star pattern.
3. Reconnect the 48V low-voltage battery per Cybertruck-specific procedure.
4. Power on the vehicle and exit Service Mode for the EPB; the system should perform an automatic calibration cycle (audible motor cycling at the rear). Allow it to complete without interruption.
5. If a brake line was opened at any point, bleed the brake system per Tesla procedure and torque any line fittings; otherwise, no hydraulic bleed is required for actuator-only replacement.
6. Clear any stored EPB / chassis fault codes via the touchscreen Service Mode.

Verification

• Confirm no EPB, ABS, or chassis warning indicators are illuminated on the driver display after the calibration cycle.
• With the vehicle stationary and in P, cycle the parking brake on/off via the touchscreen control and listen for clean, symmetric clamp/release at both rear corners.
• Test on a slight grade: place in N, apply EPB, and confirm the truck holds. Release and confirm clean disengagement.
• Perform a low-speed road test (under 10 mph) and use the EPB dynamic brake function (if accessible in service procedure) to verify proper holding force, then check for unusual noise from the rear caliper at the next several stops.
• Recheck wheel lug nut torque after a short drive.
• Reminder: while the brake system is open for service, verify the brake fluid service interval — Tesla recommends DOT 3 brake fluid replacement every 2 years regardless of mileage.

More procedures for this vehicle