Brake Rotors - Rear Pair

Replace both rear brake rotors on a 2024 Model Y Long Range AWD. The rear setup uses an integrated electric parking brake (EPB) caliper, which must be retracted via service mode before disassembly.

Warnings

Tools required

Parts

• Rear brake rotors (OEM or equivalent for Model Y LR AWD) × 2 — Tesla-spec rear rotor for 2024 Model Y Long Range
• Rotor set screws (if damaged on removal) × 2 — OEM Torx-head rotor retaining screw

Preparation

1. Park on level ground, place in P, engage parking brake.
2. Exit ALL doors with the key fob away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. BEFORE disconnecting 12V: On the touchscreen, navigate to Controls > Service > Brakes and enable 'Brake Service Mode' to retract the rear EPB caliper pistons. Wait for confirmation that service mode is active.
4. Disconnect the low-voltage battery (12V/16V on this Model Y — located behind/under rear seat trim per architecture notes). Wait 2 minutes after disconnect.
5. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal.
6. If 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 rear lug nuts while the vehicle is on the ground.
8. Raise the rear of the vehicle using Tesla-approved lift points and jack pad pucks. Support securely on jack stands or a lift.
9. Remove both rear wheels.

Procedure

1. 1

   Inspect rear brake assembly
   Visually inspect the rear caliper, EPB wiring connector, brake hose, and rotor for damage, leaks, or excessive corrosion. Note the orientation of any shims or anti-rattle clips before disassembly. Repeat for both sides.
2. 2

   Remove caliper slide pin bolts
   With Brake Service Mode confirmed active, loosen and remove the two caliper slide pin bolts holding the caliper body to the bracket. Hold the slide pin with a wrench if it spins. Do NOT disconnect the brake hose or the EPB electrical connector.
   ⚠Do not let the caliper hang by the brake hose or the EPB harness — both can be damaged.
   Torque spec

   Caliper Slide Pin Bolts35 Nm (26 lb-ft)
3. 3

   Support the caliper
   Lift the caliper off the rotor and pads. Support it with a caliper hanger or bungee from a suspension component. Remove the brake pads from the bracket and set aside (reuse if within spec, replace if worn).
4. 4

   Remove caliper bracket
   Remove the two large bracket bolts securing the caliper bracket to the rear knuckle. These are typically very tight — use a breaker bar. Remove the bracket from the vehicle.
   Torque spec

   Bracket Bolts102 Nm (75 lb-ft)
5. 5

   Remove rotor set screw and rotor
   Remove the small Torx set screw retaining the rotor to the hub. If seized, apply penetrating oil and use a hand impact driver — do not strip the head. Pull the rotor straight off the hub. If corroded to the hub, tap gently around the rotor hat with a dead-blow mallet (never a steel hammer near aluminum suspension parts).
   ⚠Do not strike the hub face, dust shield, or wheel speed sensor.
   Torque spec

   Rotor Set Screws7 Nm (5 lb-ft)
6. 6

   Clean hub face
   Wire-brush the hub mating surface to remove all rust and debris. A clean, flat hub face is critical to prevent runout and brake pulsation. Apply a very thin smear of anti-seize to the hub register only — keep it off the friction surface and lug studs.
7. 7

   Install new rotor
   Wipe the new rotor's friction surfaces with brake cleaner to remove shipping oil. Install the rotor onto the hub and secure with the Torx set screw.
   Torque spec

   Rotor Set Screws7 Nm (5 lb-ft)
8. 8

   Reinstall caliper bracket
   Apply medium-strength threadlocker to the caliper bracket bolts. Install the bracket onto the knuckle and torque the bolts to specification.
   Torque spec

   Bracket Bolts102 Nm (75 lb-ft)
9. 9

   Install brake pads and caliper
   Install the brake pads (with any shims/clips in original orientation) into the bracket. With pistons fully retracted (via Service Mode), seat the caliper over the pads and rotor. Apply silicone brake grease to the slide pins, then install and torque the slide pin bolts.
   ⚠Do not manually wind or compress the rear EPB pistons with a C-clamp — Service Mode handles retraction electronically.
   Torque spec

   Caliper Slide Pin Bolts35 Nm (26 lb-ft)
10. 10

    Repeat for opposite side
    Perform steps 2 through 9 on the other rear corner.

Reassembly

1. Reinstall both rear wheels. Snug lug nuts by hand in a star pattern.
2. Lower vehicle to the ground.
3. Final-torque lug nuts in a star pattern to specification.
4. Reconnect the 12V low-voltage battery.
5. Power the vehicle on (do not drive yet). On the touchscreen, navigate to Controls > Service > Brakes and EXIT Brake Service Mode. Wait for confirmation that the EPB has re-engaged.
6. With your foot firmly on the brake pedal, pump the pedal several times until firm — this seats the caliper pistons against the new rotors.
7. Cycle the parking brake on/off via the touchscreen or shifter to confirm EPB function.

Verification

• Confirm no brake or EPB warnings on the instrument cluster / touchscreen.
• Brake pedal must be firm at the top of travel before driving.
• Perform a low-speed roll test in a safe area: brakes should engage smoothly with no pulsation, grinding, or pull.
• Bed in the new rotors per the pad manufacturer's procedure (typically 8-10 moderate stops from ~35 mph, then a cool-down drive without coming to a complete stop).
• Recheck lug nut torque after 50-100 miles — Wheel Lug Nuts spec applies.
• Note: Tesla recommends brake fluid replacement every 2 years regardless of mileage. If overdue, schedule that service. Also, Tesla recommends tire rotation every 6,250 mi on Model Y due to high tread wear — consider rotating now since wheels are off.

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