🔧 4Runner - Rear Brake Pad and Rotor Replacement

This repair replaces the rear brake pads and both rear rotors on your 4Runner. The parking-brake shoes sit inside each rear rotor, so the parking brake must remain released and may need adjustment before the rotors will come off.

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

Assumption: The factory rear calipers and drum-style parking brake are still installed.

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⚠️ Safety & Precautions

• ⚠️ Work on level, solid ground and support your 4Runner with jack stands. Never work beneath a vehicle supported only by a floor jack.
• ⚠️ Leave the parking brake completely released. It operates shoes inside the rear rotors.
• ⚠️ Chock both front wheels because the parking brake cannot be used during this repair.
• ⚠️ Brake dust can be harmful. Do not blow it away with compressed air; wet it with brake cleaner.
• ⚠️ Never press the brake pedal while a caliper is removed.
• ⚠️ Do not let a caliper hang from its rubber brake hose.
• ⚠️ Brake fluid damages paint. Check the reservoir while compressing the pistons and remove excess fluid if necessary.
• ⚠️ Battery disconnection is not required.

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🔧 Required Tools

You'll need the following tools for this repair:

• 3-ton hydraulic floor jack
• 3-ton jack stands
• Heavy-duty wheel chocks
• 21mm deep socket
• 17mm socket
• 19mm socket
• 10mm socket
• 3/8-inch drive ratchet
• 1/2-inch drive breaker bar
• 1/2-inch drive torque wrench rated 20-150 ft-lbs
• 8-inch C-clamp or disc-brake piston compressor
• Rear brake caliper hanger hooks
• Flat-blade screwdriver with 6-inch shaft
• Small hooked pick
• M8 × 1.25 rotor-removal bolts
• 16-ounce rubber mallet
• Stiff nylon brake-cleaning brush
• Wheel-hub cleaning brush
• Brake-fluid suction syringe
• Disposable shop towels
• Nitrile mechanic gloves
• Safety glasses

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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 - Replace in pairs - Qty: 2
• Rear brake pad hardware kit - Qty: 1
• Rear brake pad wear indicators - Qty: 2
• High-temperature silicone brake lubricant - Qty: 1
• Non-chlorinated brake cleaner - Qty: 2 cans
• DOT 3 brake fluid - Qty: 1 small bottle

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📋 Before You Begin

• 📋 Park your 4Runner on level pavement, shift into Park, switch off the engine, and release the parking brake completely.
• 📋 Place heavy-duty wheel chocks firmly in front of and behind both front tires.
• 📋 Open the hood and inspect the brake-fluid reservoir. Use the brake-fluid suction syringe to remove a small amount if the fluid is near the MAX line.
• 📋 Confirm that the replacement rotors match the originals before dismantling both sides.
• 📋 Photograph the pad clips and wear-indicator positions before removing them.
• 📋 No infotainment service mode or scan-tool command is required for the mechanical parking brake.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the Rear Wheel Nuts

• Use a 21mm deep socket and 1/2-inch breaker bar to loosen each rear wheel nut about one-quarter turn.
• Do not remove the nuts while the tires are still carrying the vehicle’s weight.

Step 2: Raise and Support the Rear Axle

• Position the 3-ton floor jack beneath the center of the rear differential housing and raise the rear of your 4Runner.
• Place 3-ton jack stands beneath the rear axle housing on both sides, clear of brake lines and suspension brackets.
• Lower the axle carefully onto the stands, leave the floor jack lightly contacting the differential, and push the body gently to verify stability.

Step 3: Remove the Rear Wheels

• Use the 21mm deep socket and ratchet to remove the wheel nuts.
• Lift off both rear wheels and place them flat away from the work area.
• Complete one side before dismantling the other.

Step 4: Remove the Rear Caliper

• Use the 17mm socket and breaker bar to remove the two rear caliper mounting bolts.
• Slide the caliper away from the rotor. If it is tight, rock it gently by hand rather than pulling on the hose.
• Support the caliper with a caliper hanger hook. The rubber brake hose must remain free of tension and twisting.
• Do not disconnect the brake hose, so brake bleeding should not be necessary.

Step 5: Remove the Old Brake Pads and Hardware

• Use the small hooked pick to remove the old pads and stainless-steel hardware clips from the caliper bracket.
• Note the location of each wear indicator. A wear indicator is the small metal tab that squeals when the pad becomes thin.
• Inspect the caliper for torn rubber boots, fluid leakage, severe rust, or a seized piston. Stop and replace or rebuild damaged components before continuing.

Step 6: Remove the Caliper Bracket

• Use the 19mm socket and 1/2-inch breaker bar to remove the two caliper-bracket bolts.
• Lift the bracket away and keep its bolts clean.
• Use brake cleaner, shop towels, and the stiff nylon brush to clean the bracket’s pad-contact surfaces.

Step 7: Retract the Parking-Brake Shoes if Needed

• Look through the rotor access opening and rotate the rotor until the parking-brake adjuster is accessible.
• If the rotor will not slide outward, use the flat-blade screwdriver to turn the star-wheel adjuster and retract the parking-brake shoes.
• A star-wheel adjuster is a small toothed wheel that changes the parking-brake shoe clearance.
• If turning it makes the rotor tighter, turn it in the opposite direction until the rotor rotates freely.

Step 8: Remove the Old Rotor

• Pull the rotor straight off the hub by hand.
• If rust holds it in place, thread two M8 × 1.25 rotor-removal bolts evenly into the rotor’s threaded extraction holes.
• Use the 10mm socket and ratchet to tighten each extraction bolt a little at a time, alternating sides until the rotor releases.
• Use the rubber mallet around the rotor hat if additional vibration is needed. Do not strike the wheel studs or parking-brake components.
• Remove both extraction bolts with the 10mm socket before installing the new rotor.

Step 9: Inspect the Parking-Brake Components

• Use the safety glasses, brake cleaner, shop towels, and nylon brush to clean the parking-brake assembly without disturbing its springs.
• Inspect the shoes for cracks, missing lining, grease contamination, or uneven wear.
• Inspect the springs and adjuster for corrosion or damage. Replace faulty parking-brake parts before installing the rotor.

Step 10: Clean the Hub and New Rotor

• Use the wheel-hub cleaning brush to remove rust from the hub face. The new rotor must sit completely flat against it.
• Use brake cleaner and shop towels to remove protective oil from both friction faces and the inner parking-brake drum of the new rotor.
• Do not apply grease or anti-seize to the wheel studs, lug-nut seats, rotor friction surfaces, or parking-brake drum.

Step 11: Install and Adjust the New Rotor

• Slide the clean rotor over the wheel studs and parking-brake shoes.
• Use two wheel nuts installed backward by hand to hold the rotor flush against the hub. Use only finger pressure.
• Use the flat-blade screwdriver through the access opening to expand the star-wheel adjuster until the rotor locks.
• Turn the adjuster back in the opposite direction until the rotor rotates with only a faint, even drag.
• Repeat the adjustment if the rotor binds at one point or rotates with no contact at all.

Step 12: Reinstall the Caliper Bracket

• Position the cleaned bracket over the rotor and start both bracket bolts by hand.
• Use the 19mm socket and torque wrench to tighten both bracket bolts to 104 Nm (77 ft-lbs).

Step 13: Compress the Caliper Piston

• Place an old brake pad against the piston and use the 8-inch C-clamp or disc-brake piston compressor to push the piston slowly and evenly into the caliper.
• Watch the brake-fluid reservoir while compressing the piston. Use the suction syringe if the fluid approaches the reservoir opening.
• Stop if the piston tilts, binds, or requires excessive force. This indicates a caliper problem.

Step 14: Install New Pad Hardware and Pads

• Press the new stainless-steel hardware clips into the caliper bracket by hand.
• Apply a very thin film of high-temperature silicone brake lubricant where the pad ears contact the hardware.
• Keep lubricant completely off the pad friction material and rotor surfaces.
• Install the pads in the same orientation as the originals, with the wear indicators matching the photographed positions.
• Pads should slide freely without rattling.

Step 15: Reinstall the Rear Caliper

• Remove the caliper from its hanger and position it over the new pads without twisting the hose.
• Start both caliper mounting bolts by hand to prevent cross-threading.
• Use the 17mm socket and torque wrench to tighten the caliper mounting bolts to 88 Nm (65 ft-lbs).
• Rotate the rotor by hand and verify that it moves with light pad contact but does not bind.

Step 16: Repeat on the Opposite Side

• Use the same listed tools and repeat Steps 4 through 15 on the other rear wheel.
• Compare the second side with the completed side if clip or wear-indicator positioning is unclear.

Step 17: Reinstall the Rear Wheels

• Remove the temporary wheel nuts holding each rotor by hand.
• Install each wheel and start all wheel nuts by hand.
• Use the 21mm deep socket and ratchet to snug the nuts in a crisscross pattern.
• Use the floor jack to lift the axle, remove the jack stands, and lower your 4Runner until the tires contact the ground fully.
• Use the 21mm deep socket and torque wrench to tighten the wheel nuts in a crisscross pattern to 112 Nm (83 ft-lbs).

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✅ After Repair

• ✅ Before starting the engine, press and release the brake pedal repeatedly until it becomes firm. Do not move your 4Runner until the pedal is firm.
• ✅ Check the brake-fluid reservoir and adjust it to the MAX line with fresh DOT 3 brake fluid. Do not overfill it.
• ✅ Apply and release the parking brake several times, then confirm that it holds your 4Runner securely on a gentle incline.
• ✅ Check around both calipers for brake-fluid leakage and verify that no hose is twisted.
• ✅ Perform a slow test in a safe area. Confirm normal braking and listen for scraping or knocking.
• ✅ Bed in the pads with 8-10 moderate stops from approximately 50 km/h to 15 km/h. Allow about 30 seconds between stops and avoid coming to a complete stop with hot brakes.
• ✅ Drive for 10 minutes afterward with minimal braking to cool the brakes. Avoid hard stops for the first 300 km unless required for safety.
• ✅ Recheck wheel-nut torque to 112 Nm (83 ft-lbs) after approximately 80-100 km.

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💰 DIY vs Shop Cost

Shop Cost: ₹28,000-₹50,000 (parts + labor)

DIY Cost: ₹14,000-₹30,000 (parts only)

You Save: ₹14,000-₹20,000 by doing it yourself!

Rates in the Sonīpat/Delhi NCR area vary by workshop and parts brand. This repair takes a shop approximately 2-3 hours.

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