How to Replace Rear Brake Pads & Rotors on a 2012 Subaru Outback (DIY Guide)
Step-by-step instructions with tools, parts list, torque specs, parking brake tips, and bedding procedure
How to Replace Rear Brake Pads & Rotors on a 2012 Subaru Outback (DIY Guide)
Step-by-step instructions with tools, parts list, torque specs, parking brake tips, and bedding procedure
🔧 Outback - Rear Brake Pads & Rotor Replacement
On your Outback, the rear brakes use disc pads and rotors, plus a small “drum-in-hat” parking brake inside the rotor. You’ll remove the caliper and bracket, swap the rotor and pads, then verify the parking brake isn’t dragging.
Difficulty Level: Intermediate | Estimated Time: 2-4 hours
⚠️ Safety & Precautions
- ⚠️ Support the car on jack stands; never work under a jack.
- ⚠️ Brake dust is harmful—wear a mask and use brake cleaner, not compressed air.
- ⚠️ Do one side at a time so you can reference the other side.
- ⚠️ Do not press the brake pedal with a caliper removed.
- ⚠️ Parking brake must be fully released before rotor removal.
🔧 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
- Safety glasses
- Nitrile gloves
- Breaker bar 1/2"
- Torque wrench 3/8"
- Torque wrench 1/2"
- 19mm socket
- 14mm socket
- 17mm socket
- Ratchet 3/8"
- Flathead screwdriver (medium)
- C-clamp 6"
- Wire brush
- Rubber mallet
- Bungee cord
- Brake cleaner spray
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Rear brake pad set - Qty: 1
- Rear brake rotors - Qty: 2
- Brake caliper hardware kit - Qty: 1
- Brake grease (silicone-based) - Qty: 1
- DOT 3 brake fluid - Qty: 1 bottle
📋 Before You Begin
- Park on level ground, put the shifter in Park, and release the parking brake fully.
- Chock the front wheels with wheel chocks.
- Crack the rear lug nuts loose with a 19mm socket and breaker bar before lifting.
- Open the hood and check the brake fluid level; you may need to remove a little if it’s near “MAX” (pads pushing back can overflow).
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Lift and secure the rear
- Use a floor jack to lift the rear and place jack stands under solid rear support points.
- Remove the rear wheels using a 19mm socket.
Step 2: Remove the rear caliper
- Locate the two caliper slide-pin bolts on the back of the caliper.
- Remove both bolts using a 14mm socket and ratchet 3/8".
- Lift the caliper off the bracket and hang it from the suspension with a bungee cord (do not let it hang by the brake hose).
Step 3: Remove the old pads and hardware
- Pull the pads out of the bracket by hand. If stuck, gently pry with a flathead screwdriver (medium).
- Remove the stainless pad clips from the bracket (this is the “hardware”).
Step 4: Remove the caliper bracket
- Remove the two bracket bolts using a 17mm socket and breaker bar 1/2".
- Set the bracket aside.
- Reinstall later and Torque to 80 Nm (59 ft-lbs) using a torque wrench 1/2".
Step 5: Remove the rotor (and free a stuck rotor)
- Pull the rotor straight off the hub by hand.
- If the rotor is stuck, tap around the rotor “hat” with a rubber mallet.
- If it still won’t come off, the parking brake shoes may be holding it. Use a flathead screwdriver (medium) through the access slot (behind the rotor area) to back off the star-wheel adjuster a few clicks. Small turns make a big difference.
Step 6: Clean the hub and prep the new rotor
- Clean rust from the hub face using a wire brush. This helps prevent brake vibration.
- Clean the new rotor braking surfaces with brake cleaner spray to remove protective oil.
- Install the new rotor onto the hub.
Step 7: Service the slide pins (important for even pad wear)
- Pull the caliper slide pins out of the bracket by hand.
- Wipe them clean, then apply a thin layer of brake grease (silicone-based).
- Reinsert the pins and make sure they move smoothly (no sticking).
Step 8: Install new pad hardware and pads
- Install new pad clips from the hardware kit onto the bracket.
- Apply a very thin film of brake grease (silicone-based) where the pad “ears” touch the clips (avoid rotor and pad friction material).
- Install the new pads into the bracket.
Step 9: Compress the caliper piston
- Place one old pad against the piston face, then compress the piston slowly using a C-clamp 6".
- Go slow and watch the brake fluid reservoir so it doesn’t overflow.
Step 10: Reinstall caliper and torque bolts
- Reinstall the caliper over the new pads.
- Install the slide-pin bolts using a 14mm socket.
- Torque to 23 Nm (17 ft-lbs) using a torque wrench 3/8".
Step 11: Repeat on the other rear side
- Repeat Steps 2–10 on the other rear wheel.
Step 12: Reinstall wheels and torque lug nuts
- Reinstall the wheels and hand-thread lug nuts.
- Lower the car and torque lug nuts in a star pattern using a torque wrench 1/2".
- Torque to 120 Nm (89 ft-lbs).
✅ After Repair
- Pump the brake pedal 10–15 times until it feels firm (this seats the pistons).
- Check brake fluid level and top off with DOT 3 brake fluid if needed.
- With the parking brake released, spin each rear wheel by hand (should rotate with only light pad drag).
- Bed-in (break-in) the new pads/rotors: make 6–10 medium stops from 50–15 km/h, with 30–60 seconds between stops. Don’t hold the pedal hard at a complete stop right after.
- Test drive at low speed first; listen for grinding and verify straight, smooth braking.
💰 DIY vs Shop Cost
Shop Cost: ₹12,000-₹28,000 (parts + labor)
DIY Cost: ₹6,000-₹18,000 (parts only)
You Save: ₹6,000-₹10,000 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.
🎯 Ready to get started?
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