🔧 4Runner - Front Brake Pads & Rotor Replacement

You’ll be removing the front calipers, replacing the pads, and swapping the rotors. This restores safe stopping power and fixes vibration/pulsation caused by warped or worn rotors.

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

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⚠️ Safety & Precautions

• 🛑 Support your 4Runner with jack stands—never rely on a jack alone.
• 🧤 Wear safety glasses and a dust mask; brake dust and cleaner are irritating.
• 🔥 Brakes can be hot—let the front brakes cool before starting.
• 🧷 Do not let the caliper hang by the brake hose; support it with a hanger/strap.
• 🧪 Keep brake fluid off paint; it damages paint quickly.
• 🔋 Battery disconnect is not required for this job.

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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
• Safety glasses
• Nitrile gloves
• Breaker bar (1/2")
• Torque wrench (1/2" drive)
• 21mm socket
• 17mm socket
• 14mm socket
• Ratchet (3/8" or 1/2")
• Flathead screwdriver
• C-clamp brake piston compressor
• Brake caliper hanger hook
• Wire brush
• Micrometer or vernier caliper (specialty)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Front brake rotors - Qty: 2
• Front brake hardware kit (pad clips/shims) - Qty: 1
• Brake grease (high-temp silicone or ceramic) - Qty: 1
• Brake cleaner spray - Qty: 2
• Brake fluid (DOT 3) - Qty: 1 quart

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📋 Before You Begin

• Park on level ground, shift to P, and set the parking brake.
• Chock the rear wheels with wheel chocks.
• Loosen the front lug nuts 1/2 turn using a 21mm socket and breaker bar before lifting.
• Open the hood and check the brake fluid level; when you push the pistons back, the level rises. Don’t overfill.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and remove the front wheels

• Lift the front end using a floor jack (rated 3-ton minimum) at the front jacking point.
• Set the frame onto jack stands (rated 3-ton minimum) and gently lower the jack.
• Remove lug nuts with a 21mm socket and remove both front wheels.

Step 2: Remove the caliper (do not stress the hose)

• Turn the steering wheel to give yourself more room at the side you’re working on.
• Remove the two caliper slide bolts using a 14mm socket.
• Lift the caliper off the bracket and support it using a brake caliper hanger hook.
• Caliper hanger = a hook/strap to hold the caliper.

Step 3: Remove the old pads and hardware

• Pull the pads out of the bracket by hand; use a flathead screwdriver gently if they’re stuck.
• Remove the pad clips/shims from the bracket.
• Clean the bracket pad “tracks” using brake cleaner spray and a wire brush.

Step 4: Remove the caliper bracket

• Remove the two bracket-to-knuckle bolts using a 17mm socket and breaker bar (1/2").
• Set the bracket aside.
• When reinstalling later: Torque to 167 Nm (123 ft-lbs).

Step 5: Remove the rotor

• Pull the rotor straight off the hub.
• If it’s stuck from rust, tap around the rotor hat area using the handle end of your breaker bar (1/2") (light taps).
• Clean the hub face with a wire brush, then spray with brake cleaner spray.

Step 6: Install the new rotor

• Spray both sides of the new rotor with brake cleaner spray to remove protective oil.
• Slide the new rotor onto the hub.
• Keep fingers off the rotor friction surface.

Step 7: Reinstall the bracket with new hardware clips

• Install the new pad clips from the front brake hardware kit onto the bracket.
• Reinstall the bracket bolts using a 17mm socket.
• Torque to 167 Nm (123 ft-lbs).

Step 8: Compress the caliper pistons

• Before compressing, verify the brake fluid reservoir isn’t already at “MAX”.
• Use a C-clamp brake piston compressor to slowly push the pistons back into the caliper.
• Go slow to avoid fluid overflow.

Step 9: Install the new pads

• Apply a thin layer of brake grease (high-temp silicone or ceramic) where the pad ears contact the clips (metal-to-metal contact points).
• Install the inner and outer pads into the bracket by hand.
• Do not grease pad friction material.

Step 10: Reinstall the caliper

• Set the caliper over the new pads.
• Install the slide bolts using a 14mm socket.
• Torque to 34 Nm (25 ft-lbs).

Step 11: Reinstall wheels and lower the vehicle

• Put the wheels back on and hand-thread the lug nuts.
• Lower the 4Runner off the jack stands (rated 3-ton minimum) using the floor jack (rated 3-ton minimum).
• Tighten lug nuts in a star pattern using a torque wrench (1/2" drive) and 21mm socket: Torque to 113 Nm (83 ft-lbs).

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✅ After Repair

• Before driving, pump the brake pedal 10–15 times until it feels firm. This seats the pistons.
• Check brake fluid level and top off with brake fluid (DOT 3) if needed.
• Do a cautious test drive at low speed; confirm no pulling, grinding, or warning lights.
• Pad/rotor bedding (recommended): perform 8–10 medium stops from 40–10 mph, with cool-down time between stops.
• Recheck lug nut torque after 50–100 miles: Torque to 113 Nm (83 ft-lbs).

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💰 DIY vs Shop Cost

Shop Cost: $650-$1,050 (parts + labor)

DIY Cost: $220-$520 (parts only)

You Save: $430-$530 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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