🔧 Legacy - Rear Brake Pad Replacement

You’ll remove the rear wheels, swing the rear brake calipers out of the way, swap in new pads (and hardware), then reassemble and test. On your Legacy, the rear brakes typically use an electronic parking brake (EPB), so you must put the EPB in service mode (or retract it with a scan tool) before pushing the piston back.

Difficulty Level: Intermediate | Estimated Time: 1.5–3.0 hours

Assumption: Rear brakes are EPB-type (common on this Legacy). Steps include both EPB methods.

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⚠️ Safety & Precautions

• ⚠️ Work on a flat surface and chock the front wheels before lifting the rear.
• ⚠️ Support the car with jack stands; never rely on a floor jack alone.
• ⚠️ Do not press the brake pedal with a caliper removed.
• ⚠️ If your Legacy has EPB, do not force the rear piston in without retracting the EPB first.
• ⚠️ Brake dust is harmful—use brake cleaner, not compressed air.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• 19mm socket
• 3/8" drive ratchet
• 1/2" drive breaker bar
• 14mm socket
• 17mm socket
• Torque wrench (10–200 Nm range)
• Flat trim tool
• Needle-nose pliers
• Brake caliper piston compression tool (specialty)
• Wire brush
• Bungee cord
• Catch pan
• Nitrile gloves
• Safety glasses
• OBD2 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 pad hardware kit - Qty: 1
• Brake grease (silicone) - Qty: 1
• Brake cleaner - Qty: 1
• Rear brake rotors - Qty: 2 Optional (replace in pairs)

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📋 Before You Begin

• Park on level ground, put the shifter in P, and release the parking brake.
• Place wheel chocks at both front wheels.
• Loosen rear wheel lug nuts 1/2 turn using a 19mm socket and breaker bar.
• EPB prep: choose one method below before compressing the rear pistons.
• EPB definition: an electric motor applies the parking brake inside the rear caliper.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Retract the Electronic Parking Brake (EPB)

• Preferred method (scan tool): Connect your OBD2 scan tool with EPB service mode (specialty) and run the command for Rear EPB > Maintenance/Service Mode > Retract.
• Alternate method (if equipped): Use the in-car EPB maintenance/service mode procedure shown in your owner/service info. Use the flat trim tool only if you must access the diagnostic connector area for your scan tool.
• If you hear the motor retract, you’re good.

Step 2: Lift the rear and remove both rear wheels

• Lift the rear using a floor jack at the approved rear jacking point.
• Set the car down onto jack stands placed at proper rear support points.
• Remove lug nuts with a 19mm socket and ratchet, then remove both rear wheels.

Step 3: Remove the caliper (keep the hose safe)

• Locate the rear caliper slide pin bolts (usually two).
• Remove the slide pin bolts using a 14mm socket and ratchet.
• Lift the caliper off the bracket and hang it from the suspension using a bungee cord.
• Never let the caliper hang by the hose.

Step 4: Remove old pads and hardware

• Pull the inner and outer pads out of the bracket by hand; use needle-nose pliers if they’re stuck.
• Remove the pad hardware clips (abutment clips). Use needle-nose pliers carefully.
• Spray the bracket pad contact areas with brake cleaner over a catch pan, then scrub with a wire brush.

Step 5: Check rotor condition (important)

• Inspect the rear rotors for deep grooves, heavy rust ridges, or blue/purple heat spots.
• If rotors are being replaced: remove the caliper bracket bolts using a 17mm socket and breaker bar, then remove the rotor.
• Torque to 80 Nm (59 ft-lbs) for the rear caliper bracket bolts.

Step 6: Service the slide pins

• Pull the slide pins out of the bracket (they should move smoothly).
• Wipe old grease off, then apply a thin coat of brake grease (silicone) to each pin.
• Reinstall slide pins by hand so they seat fully.

Step 7: Install new hardware clips and pads

• Install new hardware clips from the rear brake pad hardware kit.
• Apply a light film of brake grease (silicone) where the pad “ears” touch the hardware clips.
• Install the new inner and outer pads into the bracket.
• Grease only contact points, not pad friction.

Step 8: Compress the rear caliper piston

• Remove the brake fluid reservoir cap (under the hood) to reduce pressure; keep a rag handy.
• Use the brake caliper piston compression tool (specialty) to slowly push the piston in until it’s flush enough to fit over the new pads.
• If fluid threatens to overflow, catch some in a catch pan and stop.
• Slow pressure avoids damage.

Step 9: Reinstall the caliper

• Set the caliper back over the new pads.
• Install slide pin bolts using a 14mm socket and ratchet.
• Torque to 27 Nm (20 ft-lbs) for the rear caliper slide pin bolts.

Step 10: Reinstall wheels and lower the car

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

Step 11: Exit EPB service mode and reapply EPB

• Use your OBD2 scan tool with EPB service mode (specialty) to run Rear EPB > Maintenance/Service Mode > Close/Initialize.
• Cycle the EPB switch to apply and release the parking brake once.

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✅ After Repair

• With the engine OFF, pump the brake pedal 10–15 times until it feels firm.
• Check brake fluid level and reinstall the reservoir cap.
• Start the car and confirm the brake pedal feels normal and the EPB warning light is off.
• Do a careful test drive: 5–10 gentle stops from 30–50 km/h, leaving space to cool between stops.
• Recheck for leaks, odd noises, or a pulling feeling after the test drive.

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💰 DIY vs Shop Cost

Shop Cost: ₹6,000–₹14,000 (parts + labor)

DIY Cost: ₹2,500–₹7,000 (parts only)

You Save: ₹3,500–₹7,000 by doing it yourself!

Shop labor rates vary but typically run ₹1,000–₹2,500/hour. This repair takes a shop approximately 1.0–1.8 hours.

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🎯 Ready to get started?

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