Complete brake fluid flush on a 2024 Tesla Cybertruck Cyberbeast. Replace old DOT 3 fluid with fresh fluid at all four calipers using the proper bleed sequence. Tesla recommends this service every 2 years regardless of mileage.

Warnings

Tools required

Parts

• Bleeder screw dust caps (inspect; replace if cracked) × 4 — OEM specification

Fluids

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

Preparation

1. TESLA SAFETY PREAMBLE: Park on level ground, place in P, engage 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 low-voltage battery. NOTE: This Cybertruck uses a 48V LV architecture — locate and disconnect per Tesla service documentation. Do NOT assume 12V tooling/connectors.
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal on this 800V vehicle.
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. From the touchscreen (before LV disconnect): activate Jack Mode / Service Mode to disable air suspension self-leveling.
7. Loosen wheel lug nuts a quarter turn while the vehicle is still on the ground.
8. Lift the vehicle at the manufacturer-specified jack points using approved pucks. Support all four corners on rated jack stands.
9. Remove all four wheels for clear access to bleeders.
10. Place fender covers and absorbent material around the brake fluid reservoir.

Procedure

1. 1

   Inspect and prepare the brake fluid reservoir
   Locate the brake fluid reservoir on the master cylinder/iBooster assembly. Clean any debris from around the cap before opening. Open a fresh sealed bottle of DOT 3 brake fluid. Note the existing fluid color and level — dark/brown fluid confirms the flush is overdue.
   ⚠Brake fluid absorbs moisture from air. Keep the reservoir cap and the new fluid bottle closed except when actively adding fluid.
2. 2

   Extract old fluid from the reservoir
   Using a clean turkey baster or dedicated fluid extractor, remove as much old fluid as possible from the reservoir without going below the internal screen. Refill the reservoir to the MAX line with fresh DOT 3. This dramatically reduces the volume of dirty fluid you must push through the lines.
3. 3

   Connect pressure or vacuum bleeder
   If using a pressure bleeder, attach the appropriate cap adapter to the reservoir and pressurize per the bleeder manufacturer's spec (typically 10–15 psi). If using a two-person manual or vacuum method, ensure a helper is in the cabin or the vacuum bleeder is ready. Verify no leaks at the reservoir cap.
   ⚠Do not exceed the pressure bleeder manufacturer's recommended PSI. Excessive pressure can damage the reservoir or master cylinder seals.
4. 4

   Bleed the first caliper (longest line from master cylinder)
   Refer to the Tesla Service Manual for the verified bleed sequence on Cybertruck — typically the caliper farthest from the master cylinder is bled first. Locate the bleeder screw on the caliper, remove the dust cap, and place a box-end wrench on the bleeder. Attach a clear hose from the bleeder into a catch bottle with a small amount of fresh fluid covering the hose tip. Open the bleeder approximately 1/2 turn and allow fluid to flow until clean, bubble-free, clear fluid is observed (typically 200–300 ml per corner). Close the bleeder before stopping flow.
   ⚠Monitor the reservoir continuously — top off with fresh fluid before it drops below the MIN line. Air ingestion here can require dealer-level ABS bleed.
   ℹ️VERIFY the bleed sequence with the official Tesla Cybertruck Service Manual before proceeding — sequence varies by vehicle.
   Torque spec

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

   Bleed the second caliper
   Move to the next caliper in the manufacturer-specified sequence. Repeat the procedure: hose into catch bottle, open bleeder ~1/2 turn, flow clean fluid until bubble-free and clear, close the bleeder. Top off the reservoir.
   Torque spec

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

   Bleed the third caliper
   Continue with the third caliper per the service manual sequence. Same procedure: hose, open, flow clean fluid, close. Top off reservoir.
   Torque spec

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

   Bleed the fourth (closest) caliper
   Bleed the final caliper — typically closest to the master cylinder. Flow fluid until completely clear and free of bubbles. Close the bleeder.
   Torque spec

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

   Final torque on bleeder screws and reinstall dust caps
   Confirm each of the four bleeder screws is torqued to the bleeder spec. Do NOT overtighten — bleeder screws are easily snapped off and replacement requires caliper removal. Reinstall dust caps on all four bleeders.
   ⚠Bleeder screws are CRITICAL — overtightening can shear the screw or damage the caliper seat.
   Torque spec

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

   Depressurize and remove bleeder, set final reservoir level
   Release pressure from the pressure bleeder before removing it. Remove the cap adapter and wipe the reservoir clean. Adjust the fluid level to the MAX line with fresh DOT 3. Reinstall the reservoir cap fully seated.
   ⚠Wipe up any spilled fluid immediately with water — DOT 3 is corrosive to coatings on the stainless exoskeleton and aluminum suspension components.
10. 10

    Pedal feel test (vehicle still on stands)
    Reconnect the LV battery temporarily per Tesla procedure, exit Jack Mode only after wheels are reinstalled. With the vehicle powered on, press the brake pedal firmly several times. The pedal should be firm and high. A spongy or sinking pedal indicates remaining air — re-bleed the affected corner. If the pedal cannot be made firm, an ABS module bleed using Tesla service tooling may be required.

Reassembly

1. Reinstall all four wheels onto the hubs hand-tight.
2. Lower the vehicle until tires just contact the ground (still partially supported).
3. Torque lug nuts in a star pattern to spec.
4. Fully lower the vehicle and remove jack stands.
5. Final torque check on lug nuts in star pattern.
6. Reconnect the 48V low-voltage battery per Tesla procedure if disconnected. Confirm proper LV reconnect torque.
7. Power on the vehicle via the touchscreen / brake pedal.
8. Exit Jack Mode / Service Mode and allow air suspension to self-level.

Verification

• With vehicle powered on, brake pedal must be firm and high — no sinking under steady foot pressure.
• Check the touchscreen for any brake, ABS, traction control, or electronic parking brake warnings. The Cybertruck's iBooster system will throw a fault if air remains in the lines.
• Visually inspect each bleeder screw and caliper for any seepage after several pedal presses.
• Inspect the reservoir level — should be at MAX with fresh, clear amber fluid.
• Test drive at low speed in a safe area: light braking first, then progressively firmer stops. Confirm straight-line braking with no pull, no ABS chatter at moderate stops, and no warning lights.
• Reset the brake fluid service reminder if the touchscreen offers it. Tesla's published recommendation is brake fluid replacement every 2 years regardless of mileage — log this service date.

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