🔧 Outback - Rear Brake Pad Replacement

You’ll remove the rear wheels, retract the electronic parking brake (EPB) to “pad service mode,” swap the rear pads, and reassemble with correct lubrication and torque. On your Outback, the EPB must be put into service/maintenance mode before you try to push the caliper piston back.

Difficulty Level: Intermediate | Estimated Time: 1.5-3 hours

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⚠️ Safety & Precautions

• ⚠️ Support the Outback on jack stands—never rely on a jack.
• ⚠️ Use EPB maintenance/service mode before compressing the rear caliper piston, or you can damage the EPB system.
• ⚠️ Don’t inhale brake dust—use brake cleaner, not compressed air.
• ⚠️ Keep grease off pad friction material and rotor surfaces.
• ⚠️ Battery disconnect is typically not required, but keep the ignition OFF unless the scan tool procedure requires it.

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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
• Lug nut socket 19mm
• Breaker bar 1/2"
• Torque wrench 1/2" (20-200 Nm range)
• Socket 14mm
• Socket 17mm
• Ratchet 3/8"
• Torque wrench 3/8" (10-60 Nm range)
• Caliper piston compression tool (specialty)
• Flat-blade screwdriver
• Bungee cord
• Wire brush
• Brake cleaner
• Nitrile gloves
• Safety glasses
• Scan tool with Subaru 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 (clips/shims) - Qty: 1
• Brake caliper slide pin grease (silicone-based) - Qty: 1
• Brake parts cleaner - Qty: 1
• Rear brake rotors - Replace in pairs - Qty: 2

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📋 Before You Begin

• Park on level ground, shift to P, and chock the front wheels with wheel chocks.
• Release the parking brake (EPB) using the cabin switch, then turn ignition OFF.
• Confirm you have a scan tool with Subaru EPB service mode. If you don’t, pause here—this job can’t be done safely/cleanly without retracting the EPB properly.
• “Slide pins” are the caliper’s moving guide bolts.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen rear wheel lug nuts

• Use a 19mm lug nut socket and breaker bar 1/2" to crack each rear lug nut loose about 1/2 turn.

Step 2: Lift and support the rear safely

• Lift the rear with a floor jack (rated 3-ton minimum) at the proper rear jack point.
• Set the vehicle onto jack stands (rated 3-ton minimum) and verify stability before you work.

Step 3: Remove rear wheels

• Use the 19mm lug nut socket and remove the lug nuts, then remove both rear wheels.

Step 4: Put the EPB into pad service/maintenance mode

• Connect your scan tool with Subaru EPB service mode (specialty).
• Use the scan tool menu to run the EPB function that retracts the parking brake for pad replacement (often labeled “EPB Maintenance Mode,” “Pad Replacement Mode,” or “Rear Brake Service”).
• If the scan tool prompts ignition ON/OFF steps, follow them exactly on-screen.
• If it won’t enter mode, stop and recheck.

Step 5: Remove the rear caliper (upper section)

• Turn the steering wheel is not needed for the rear; just position yourself comfortably.
• Use a 14mm socket and ratchet 3/8" to remove the rear caliper slide pin bolts (typically 2 bolts).
• Carefully lift the caliper off the bracket and hang it using a bungee cord. Do not let it hang by the brake hose.

Step 6: Remove old pads and hardware

• Pull the old pads out of the bracket by hand. Use a flat-blade screwdriver gently if they’re stuck.
• Remove the pad hardware clips from the bracket.
• Spray the bracket contact areas with brake cleaner and scrub with a wire brush.

Step 7: Compress the rear caliper piston

• Install the old inner pad against the piston face (to protect it), then use a caliper piston compression tool (specialty) to slowly push the piston straight back.
• Go slow and keep it square so the piston doesn’t bind.
• Check brake fluid level as you compress.

Step 8: Service slide pins and install new hardware

• Pull each slide pin out of the bracket by hand.
• Wipe clean and apply a thin coat of brake caliper slide pin grease (silicone-based), then reinstall the pins.
• Install the new hardware clips into the bracket.

Step 9: Install new rear pads

• Install the new pads into the bracket by hand. They should move freely in the clips.
• If your pad kit includes shims, install them in the same locations as removed.

Step 10: Reinstall the caliper and torque fasteners

• Lower the caliper over the new pads.
• Install the slide pin bolts using a 14mm socket.
• Use a torque wrench 3/8" and Torque to 27 Nm (20 ft-lbs) for the rear caliper slide pin bolts.
• If you removed the caliper bracket bolts, reinstall using a 17mm socket and torque wrench 1/2", then Torque to 80 Nm (59 ft-lbs).

Step 11: Repeat on the other rear side

• Perform Steps 5 through 10 on the opposite rear wheel using the same tools.

Step 12: Exit EPB maintenance/service mode

• Use the scan tool with Subaru EPB service mode (specialty) to close/initialize the EPB and exit pad service mode.
• Follow any on-screen prompts to complete initialization.

Step 13: Reinstall wheels and torque lug nuts

• Reinstall both rear wheels and hand-thread lug nuts.
• Lower the vehicle off the jack stands using the floor jack.
• Use a torque wrench 1/2" and Torque to 120 Nm (89 ft-lbs) in a star pattern.

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✅ After Repair

• Press the brake pedal slowly 10-15 times until it feels firm (this seats the pads).
• With your foot on the brake, start the vehicle and confirm no warning lights for the brake system/EPB.
• Apply and release the EPB switch a few times and confirm normal operation.
• Do a careful low-speed test drive and listen for scraping/grinding.
• Pad break-in: do 6-10 moderate stops from ~50 to ~15 km/h, with cooling time between stops.

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💰 DIY vs Shop Cost

Shop Cost: ₹7,000-₹15,000 (parts + labor)

DIY Cost: ₹2,500-₹8,500 (parts only)

You Save: ₹4,500-₹6,500 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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