🔧 Crosstrek - Rear Brake Pads & Rotor Replacement

You’ll remove the rear wheels, take off the rear calipers and brackets, replace the rotors and pads, then reassemble and torque everything correctly. This restores stopping power and prevents vibration/pulsation from worn or warped rotors.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

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⚠️ Safety & Precautions

• 🛑 Support the A4WD vehicle with jack stands; never rely on a jack.
• 🛑 Chock the front wheels and work on level ground.
• 🛑 Do not press the brake pedal with a caliper removed.
• 🛑 Brake dust is harmful—use brake cleaner, not compressed air.
• 🛑 If your Crosstrek has an electronic parking brake (EPB) switch, you must put it in service/maintenance mode before compressing rear pistons.
• 🛑 Battery disconnect is not required unless you’re servicing EPB wiring; keep ignition OFF if EPB-equipped.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• 19mm socket
• 3/8" drive ratchet
• 1/2" drive breaker bar
• Torque wrench (20–150 ft-lbs range)
• 14mm socket
• 17mm socket
• Flat-blade screwdriver
• C-clamp brake piston compressor
• Mechanic wire or bungee cord
• Wire brush
• Rubber mallet
• Brake parts cleaner
• Disposable nitrile gloves
• Safety glasses
• Scan tool with EPB service mode (specialty)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear brake pad set - Qty: 1
• Rear brake rotors - Qty: 2
• Rear pad hardware/abutment clip kit - Qty: 1
• Brake caliper grease (silicone) - Qty: 1
• Brake cleaner - Qty: 1
• Anti-seize compound - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground, transmission in 1st gear, and set the parking brake (then release it before rotor removal).
• 🧱 Chock both front wheels.
• 🔎 Quick check: if you have a dashboard/console EPB switch (button) instead of a hand lever, follow the EPB notes in the steps.
• 🧴 Open the hood and remove the brake fluid reservoir cap (loosely). This helps the pistons push back easier; watch fluid level so it doesn’t overflow.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen lug nuts and raise the rear

• Use a 19mm socket and breaker bar to loosen each rear wheel’s lug nuts about 1/2 turn.
• Lift the rear with a floor jack (rated 3-ton minimum) and support with jack stands (rated 3-ton minimum) under the rear pinch welds/subframe points.
• Remove the wheels using the 19mm socket.

Step 2: Confirm parking brake style (EPB vs non-EPB)

• If you have an EPB switch, put the EPB into service mode using a scan tool with EPB service mode (specialty) before pushing pistons back. (Service mode retracts the parking brake motors.)
• If you have a hand lever parking brake, fully release it now.

Step 3: Remove the rear caliper (leave the hose attached)

• Turn the steering wheel is not needed for rear work; just ensure you have access.
• Use a 14mm socket and 3/8" drive ratchet to remove the two caliper slide bolts.
• Lift the caliper off the bracket and hang it with mechanic wire or bungee cord.
• Never let the caliper hang by the hose.

Step 4: Remove old pads and inspect slide hardware

• Remove the pads from the bracket by hand (use a flat-blade screwdriver gently if stuck).
• Pull the slide pins out (they’re the smooth pins the caliper rides on) and wipe them clean.
• Apply a thin coat of brake caliper grease (silicone) to the pins and reinstall them so they move smoothly.

Step 5: Remove the caliper bracket

• Use a 17mm socket and breaker bar to remove the two caliper bracket bolts.
• Set the bracket aside.
• On reassembly: Torque to 65 Nm (48 ft-lbs)

Step 6: Remove the rotor

• Make sure the parking brake is fully released.
• Pull the rotor straight off. If it’s stuck, tap around the rotor hat using a rubber mallet.
• If the rotor still won’t come off, the parking brake shoes may be holding it (common). Light tapping plus ensuring the parking brake is fully released usually frees it.

Step 7: Clean and prep the hub surface

• Use a wire brush to clean rust off the hub face (where the rotor sits).
• Spray with brake parts cleaner and wipe clean.
• Apply a very thin film of anti-seize compound to the hub face (avoid wheel studs and rotor braking surfaces).

Step 8: Install the new rotor

• Clean the new rotor faces with brake parts cleaner to remove packing oil.
• Install the rotor onto the hub.
• Hold the rotor snug by threading on two lug nuts by hand (use the 19mm socket lightly later to remove them).

Step 9: Reinstall the caliper bracket and hardware clips

• Install new pad hardware/abutment clips onto the bracket (they’re the stainless clips the pads slide on).
• Reinstall the bracket using the 17mm socket and ratchet/breaker bar.
• Torque to 65 Nm (48 ft-lbs)

Step 10: Compress the caliper piston

• Before compressing, double-check EPB status:
  • If EPB-equipped: confirm it is in service mode using the scan tool with EPB service mode (specialty).
  • If not EPB-equipped: continue normally.
• Use a C-clamp brake piston compressor to slowly push the piston straight back into the caliper.
• Watch the brake fluid reservoir so it doesn’t overflow.
• Go slow—fast can damage seals.

Step 11: Install new pads and refit the caliper

• Apply a thin layer of brake caliper grease (silicone) to pad ears (the metal ends that slide in the clips). Do not get grease on pad friction material.
• Install the new pads into the bracket.
• Set the caliper back over the pads and align the slide bolt holes.
• Install the slide bolts using the 14mm socket and ratchet.
• Torque to 27 Nm (20 ft-lbs)

Step 12: Reinstall wheels and torque lug nuts

• Reinstall the wheels and hand-thread lug nuts.
• Lower the vehicle off the jack stands using the floor jack.
• Torque lug nuts in a star pattern using a torque wrench: Torque to 120 Nm (89 ft-lbs)

Step 13: Restore brake pedal and parking brake

• Pump the brake pedal 8–15 times until it feels firm (this seats the pads against the rotors).
• If EPB-equipped: exit service mode using the scan tool with EPB service mode (specialty), then apply/release EPB to confirm operation.
• Recheck brake fluid level and reinstall the reservoir cap.

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✅ After Repair

• 🧪 With the engine running, confirm the pedal is firm and the car stops normally at low speed.
• 🔎 Listen for grinding/scraping; a light “shhh” is normal during first few stops.
• 🛞 Do 8–10 gentle stops from 30–40 mph to help bed-in pads (avoid panic stops for the first 200 miles).
• 🧰 If EPB-equipped and you get a parking brake warning, re-check service mode steps with the scan tool.

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $160-$350 (parts only)

You Save: $290-$500 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

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🎯 Ready to get started?

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