Replacement of a front brake hose on a 2024 Tesla Cybertruck Cyberbeast. The Cybertruck uses DOT 3 brake fluid and conventional hydraulic front brakes; this job requires bleeding the front circuit after hose replacement.

Warnings

Tools required

Parts

• Front brake hose assembly (Cybertruck-specific) × 1 — OEM Tesla front brake hose for Cybertruck — verify left vs. right side
• Copper sealing washers for banjo fitting × 2 — OEM-spec copper crush washers sized to banjo bolt
• Brake hose bracket retaining clip (if damaged on removal) × 1 — Manufacturer-specified retaining clip

Fluids

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

Preparation

1. Park on level ground, place in P, engage the parking brake.
2. Exit ALL doors with the key fob/phone key away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Enable Jack Mode via the touchscreen (Service menu) so the air suspension does not attempt to self-level during the lift.
4. Disconnect the 48V low-voltage battery per Tesla service procedure (Cybertruck uses 48V LV — NOT 12V). Wear insulated gloves during disconnect.
5. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal.
6. 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.
7. Loosen front wheel lug nuts while vehicle is on the ground.
8. Lift the front of the vehicle at the manufacturer-specified jack points using Tesla puck adapters; support on rated jack stands.
9. Remove the front wheel on the affected side.
10. Inspect master cylinder reservoir level and top off to MAX with fresh, sealed DOT 3 fluid before opening the hydraulic circuit.

Procedure

1. 1

   Position drip protection
   Place a catch pan beneath the caliper and lay shop rags over any stainless body or suspension components below the hose route. DOT 3 fluid is corrosive to finishes.
2. 2

   Clamp or plug the hose to minimize fluid loss (optional)
   If using a brake hose clamp, gently pinch the flexible hose upstream of the connection. This is optional but reduces reservoir drain. Do not clamp on a steel hard line.
   ⚠Use only a soft-jaw brake hose clamp — sharp clamps will damage the hose carcass.
3. 3

   Disconnect the upper (hard line) end of the brake hose
   Using a flare-nut wrench, loosen the steel hard line fitting from the top of the flexible hose at the chassis-side bracket. Hold the hose hex with a backing wrench so the hose body does not twist. Cap the hard line immediately to prevent contamination and reduce drip.
   ⚠Always use a flare-nut wrench on hydraulic line fittings — an open-end wrench will round the soft fitting.
4. 4

   Release the hose from the chassis bracket
   Remove the retaining clip securing the hose to the manufacturer-specified chassis bracket. Inspect the clip; replace if bent or corroded.
5. 5

   Remove the banjo bolt at the caliper
   Place the catch pan under the caliper. Remove the banjo bolt securing the brake hose to the caliper. Discard both copper washers — they are single-use. Cap or bag the caliper port to prevent contamination.
   ⚠Copper crush washers MUST be replaced with new ones on reassembly. Reusing washers will cause a leak.
   Torque spec

   Brake Hose Banjo Bolt25 Nm (18 lb-ft)
6. 6

   Free any intermediate hose brackets
   If the hose passes through an intermediate bracket on the strut or knuckle, remove the small bracket fastener to release the hose. Note routing for reinstallation.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
7. 7

   Remove the old hose
   Withdraw the old brake hose, noting routing and orientation of any anti-rotation tabs. Compare the new hose against the old one to confirm correct part and length before installation.
8. 8

   Install the new brake hose at the caliper
   Place a NEW copper washer on each side of the banjo fitting. Install the banjo bolt by hand, ensure the hose anti-rotation tab is seated in the caliper boss, then torque to specification. ⚠️ VERIFY the tightening sequence against the current Tesla Service Manual for Cybertruck.
   ⚠Confirm the hose does not twist or contact suspension components through full steering and suspension travel.
   Torque spec

   Brake Hose Banjo Bolt25 Nm (18 lb-ft)
9. 9

   Secure intermediate brackets
   Reinstall any intermediate hose bracket fasteners and route the hose per the original path. Torque the bracket fastener to specification. ⚠️ VERIFY sequence against the current Tesla Service Manual.
   Torque spec

   Brake Hose Bracket10 Nm (7 lb-ft)
10. 10

    Install the chassis-end fitting
    Seat the upper end of the hose into the chassis bracket and install the retaining clip fully. Hand-thread the steel hard line fitting into the hose end to avoid cross-threading, then tighten with a flare-nut wrench. Torque to OEM specification — refer to Tesla Service Manual.
    ⚠Cross-threading the hard line will require replacement of the line — start the fitting by hand only.
11. 11

    Bleed the front brake circuit
    Top off the master cylinder reservoir with fresh DOT 3 fluid. Bleed the affected caliper using a one-person bleeder bottle or pressure bleeder until clear, bubble-free fluid flows. Maintain reservoir level above MIN throughout. Torque the bleeder screw to specification when finished.
    ⚠Never let the reservoir run dry during bleeding — air in the master cylinder requires a full system bleed to recover.
    ℹ️If brake fluid is older than 2 years, perform a full 4-corner flush per Tesla's 2-year interval recommendation.
    Torque spec

    Bleeder Screw14 Nm (10 lb-ft)
12. 12

    Final leak check
    With the system bled, have an assistant apply firm, sustained pedal pressure (engine off, vehicle off). Inspect every joint — banjo, hard line union, and bleeder — for any seepage. Wipe dry and re-check after a second pedal application.

Reassembly

1. Confirm reservoir is filled to MAX with fresh DOT 3 fluid and cap is sealed.
2. Reinstall the front wheel; snug lug nuts in a star pattern.
3. Lower the vehicle to the ground.
4. Final-torque wheel lug nuts in a star pattern to specification.
5. Reconnect the 48V low-voltage battery.
6. Exit Jack Mode and allow the air suspension to return to normal ride height.
7. Wake the vehicle and clear any chassis/brake faults from the touchscreen alerts list.

Verification

• With the vehicle stationary and powered on, press the brake pedal firmly several times — pedal must be firm with no sponginess (sponginess = trapped air, re-bleed).
• Check the touchscreen for any ABS, brake system, or chassis warnings. Cybertruck shares brake-by-wire-assist signals through the chassis controller; warnings must be cleared before driving.
• Inspect the banjo, hard line union, intermediate bracket, and bleeder for leaks after the first low-speed brake applications.
• Perform a low-speed test in a safe area: progressive light braking, then a firmer stop. Confirm straight-tracking under braking and no pull.
• Re-inspect the hose with the steering at full lock left and right — confirm no contact with tire, knuckle, or suspension components.
• Recheck reservoir level after road test; top off with DOT 3 if needed.
• Log the brake fluid service date — Tesla recommends a full brake fluid replacement every 2 years regardless of mileage.

More procedures for this vehicle