Brake Bleed - All Four

Complete brake fluid bleed/flush on all four corners of the 2024 Cybertruck. This is part of Tesla's recommended 2-year brake fluid service interval and is required to maintain proper pedal feel and corrosion protection in the ABS/iBooster system.

Warnings

Tools required

Parts

• Master cylinder reservoir cap O-ring (inspect; replace if damaged) × 1 — OEM specification

Fluids

• DOT 3 Brake Fluid (sealed, unopened container) — 1 qt

Preparation

1. Park on level ground, place in P, and engage the parking brake.
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 Tesla service procedure (Cybertruck uses a 48V LV system, not 12V — confirm location and disconnect sequence in the service manual before proceeding).
4. DO NOT touch, cut, or pierce ANY orange cable — these are 800V and lethal.
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. Verify you have a fresh, sealed container of DOT 3 brake fluid. Do not reuse opened fluid — it absorbs moisture rapidly.
7. Place the Cybertruck in 'Jack Mode' / Service Mode via the touchscreen BEFORE disconnecting the LV battery, so the air suspension is locked at service height. (If the LV battery is already disconnected, reconnect briefly to set this, then disconnect again.)
8. Loosen all four lug nut sets while the vehicle is on the ground.
9. Raise the vehicle and support on jack stands at the manufacturer-specified lift points. Remove all four wheels.
10. Have an assistant available if performing a manual two-person pedal bleed; otherwise stage your pressure or vacuum bleeder.

Procedure

1. 1

   Inspect and prep the master cylinder reservoir
   Locate the brake fluid reservoir under the frunk service panel. Clean around the cap thoroughly before opening to prevent debris ingress. Using a clean turkey baster or syringe, extract the old fluid from the reservoir down to the MIN line. Refill with fresh DOT 3 to the MAX line. Inspect the reservoir cap O-ring; replace if cracked or swollen.
   ⚠Never let the reservoir drop below MIN during the entire bleed procedure. Check after each corner.
2. 2

   Connect pressure or vacuum bleeder
   If using a pressure bleeder, attach the manufacturer-specified adapter to the reservoir and pressurize to 10–15 psi (or per bleeder tool spec — do not exceed reservoir rating). If using vacuum, no pressure connection is required, but keep the reservoir topped off continuously. If performing a two-person manual bleed, have your assistant ready at the brake pedal.
3. 3

   Determine bleed sequence
   Bleed in the manufacturer-specified sequence. The conventional 'farthest-from-master-cylinder-first' sequence (RR → LR → RF → LF) is typical, but the Cybertruck's brake-by-wire hydraulic layout may differ. Verify the correct sequence in the Tesla Service Manual before proceeding.
   ⚠Incorrect bleed sequence on brake-by-wire systems can leave trapped air in the ABS/iBooster module that cannot be removed without Tesla service tooling.
4. 4

   Bleed first corner
   At the first corner in sequence, locate the caliper bleeder screw and remove the dust cap. Attach a clear hose to the bleeder nipple, routing the other end into a catch bottle with a small amount of clean fluid in it (to prevent air re-entry). Crack open the bleeder screw 1/4 to 1/2 turn. Allow fluid to flow until it runs clear and free of bubbles. If using a pedal-assist bleed, have your assistant slowly press and hold the pedal, then close the bleeder before they release.
   Torque spec

   Bleeder Screw10 Nm (7 lb-ft)
5. 5

   Close bleeder and torque
   Close the bleeder screw and torque to the verified specification. Do not overtighten — the bleeder threads are easily damaged. Wipe the area clean and reinstall the dust cap. Top off the master cylinder reservoir to MAX with fresh DOT 3.
   ⚠Bleeder screws are a critical seal. Overtorque can crack the caliper bleeder boss — an expensive repair.
   Torque spec

   Bleeder Screw10 Nm (7 lb-ft)
6. 6

   Repeat for second corner
   Move to the next caliper in the manufacturer-specified sequence. Repeat the bleed process: open bleeder, flow until clear and bubble-free, close, torque, top off reservoir.
   Torque spec

   Bleeder Screw10 Nm (7 lb-ft)
7. 7

   Repeat for third corner
   Continue to the third corner per sequence. Verify reservoir level before and after. Confirm fluid coming out is clear amber (fresh) rather than dark brown (old).
   Torque spec

   Bleeder Screw10 Nm (7 lb-ft)
8. 8

   Bleed final corner
   Bleed the final corner (typically closest to the master cylinder) until clear, bubble-free fluid flows. Close and torque the bleeder screw. Reinstall dust cap.
   Torque spec

   Bleeder Screw10 Nm (7 lb-ft)
9. 9

   Final reservoir level set
   Depressurize and remove the pressure bleeder (if used). Set the master cylinder reservoir fluid level precisely to the MAX line — do not overfill, as fluid expands when hot. Reinstall the reservoir cap and verify it is fully seated.
10. 10

    Inspect calipers and lines
    Visually inspect each caliper, bleeder, and brake line fitting for any seepage. Wipe all areas dry with a lint-free cloth. If any flare-fitting was disturbed, torque to OEM specification using a line wrench.
    Torque spec

    Line Fittings20 Nm (15 lb-ft)

Reassembly

1. Reinstall all four wheels. Hand-thread lug nuts to seat them.
2. Lower vehicle until tires just contact the ground, then torque lug nuts in a star pattern to specification.
3. Fully lower the vehicle and remove jack stands.
4. Reconnect the 48V low-voltage battery per Tesla procedure.
5. Allow the vehicle to fully wake and complete its self-checks before pressing the brake pedal.

Verification

• With the vehicle awake and stationary (in P, parking brake on), press the brake pedal firmly several times. Pedal should be firm and high — not spongy. Spongy pedal indicates trapped air; re-bleed.
• Check the touchscreen for any brake, ABS, traction control, or stability control warnings. Cybertruck's brake-by-wire system may post a fault if air remains in the ABS module — this typically requires a Tesla service-tool initiated automated bleed to clear.
• Final torque check on all four wheels using verified spec in star pattern.
• Perform a low-speed brake test in a safe, empty area: roll at 5–10 mph and apply brakes progressively. Confirm even, linear stopping with no pulling, no ABS activation, and no warning lights.
• Gradually increase test speed to 25–30 mph with firmer braking. Confirm pedal stays firm and no warnings appear.
• Record the service date and mileage. Tesla recommends brake fluid replacement every 2 years regardless of mileage — set a reminder for the next interval.
• Re-check master cylinder reservoir level after the test drive; top off to MAX if needed.

More procedures for this vehicle