🔧 4Runner - Front Brake Pad Replacement

You’ll remove the front wheels, retract the caliper pistons, and swap the old pads for new ones. On your 4Runner’s front fixed calipers, the pads are held in by retaining pins and a spring, so you typically don’t need to remove the whole caliper.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

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⚠️ Safety & Precautions

• 🧤 Work on a level surface and support the 4Runner with jack stands before going under or pulling wheels.
• 🧯 Brake dust is harmful; use brake cleaner, not compressed air, to clean parts.
• 🔥 Brakes get hot; let everything cool fully before starting.
• 🛑 Do not press the brake pedal while pads/pins are removed.
• 🔋 Battery disconnect is not required for front brake pads.

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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
• 21mm socket
• Breaker bar (1/2" drive)
• Torque wrench (1/2" drive, 20-150 ft-lbs range)
• Ratchet (1/2" drive)
• Punch set (3/16" or 5mm punch)
• Small hammer
• Large C-clamp or disc brake spreader tool (specialty)
• Flathead screwdriver
• Needle-nose pliers
• Wire brush
• Brake cleaner spray
• Shop towels
• Nitrile gloves
• Safety glasses
• Drip pan

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Front brake pad hardware/shim kit - Qty: 1
• Brake caliper grease (silicone) - Qty: 1
• Brake cleaner - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to P, and set the parking brake.
• Place wheel chocks behind the rear tires.
• Loosen the front lug nuts about 1/2 turn with a 21mm socket and breaker bar before lifting.
• Pop the hood and loosen the brake fluid reservoir cap (leave it sitting on top). This helps the fluid move back when you push pistons in.
• A “fixed caliper” has pistons on both sides.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the front

• Use a floor jack to lift the front at the approved front jacking point.
• Place jack stands under the frame support points and lower onto the stands.
• Give the 4Runner a gentle shake to confirm it’s stable.

Step 2: Remove the front wheels

• Remove the lug nuts using a 21mm socket and ratchet.
• Remove both front wheels and set them aside.

Step 3: Locate the pad retaining pins and spring

• Look at the front of the caliper: you’ll see two long retaining pins and a center anti-rattle spring.
• Spray the area with brake cleaner spray and wipe with shop towels.

Step 4: Remove the retaining pins

• Use a punch set (3/16" or 5mm punch) and small hammer to tap the pins out.
• If the pins are stubborn, apply more brake cleaner spray, then tap again while keeping the punch straight.
• Use needle-nose pliers to pull the pins the rest of the way out once they start moving.
• Don’t mushroom the pin ends.

Step 5: Remove the anti-rattle spring and old pads

• Lift the spring out using a flathead screwdriver.
• Slide the brake pads out of the caliper by hand.
• Note how any shims/hardware are oriented so the new parts go back the same way.

Step 6: Retract the caliper pistons

• Place an old pad against the pistons to spread the force evenly.
• Use a large C-clamp or disc brake spreader tool (specialty) to slowly push the pistons back into the caliper.
• Check the brake fluid reservoir as you compress pistons; if it rises near the top, use a drip pan and shop towels to catch any spill.
• Go slow to avoid damaging seals.

Step 7: Clean and prep the contact points

• Use brake cleaner spray and a wire brush to clean pad abutment areas (where pads slide).
• Install new shims/hardware from the front brake pad hardware/shim kit if your pad set uses them.
• Apply a thin film of brake caliper grease (silicone) to pad “ears”/contact points (metal-to-metal sliding points only).
• Do not get grease on pad friction material or rotor surfaces.

Step 8: Install the new pads

• Slide the new pads into the caliper by hand.
• Make sure they sit flat and can move slightly (they should not be wedged).

Step 9: Reinstall the anti-rattle spring and retaining pins

• Position the spring in the caliper.
• Insert the retaining pins by hand as far as possible.
• Use a punch set (3/16" or 5mm punch) and small hammer to tap the pins fully seated.
• Confirm both pins are fully through and the spring is properly captured.

Step 10: Reinstall wheels and torque lug nuts

• Reinstall the wheels and hand-thread lug nuts.
• Lower the 4Runner off the jack stands using the floor jack.
• Tighten lug nuts in a star pattern using a torque wrench: Torque to 113 Nm (83 ft-lbs).

Step 11: Restore pedal feel and fluid level

• With the engine off, pump the brake pedal slowly 10-15 times until it feels firm.
• Check brake fluid level and top off only if needed (do not overfill).
• Tighten the reservoir cap by hand.

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✅ After Repair

• Start the engine and press the brake pedal again to confirm a firm pedal.
• Test at low speed in a safe area; confirm the 4Runner stops straight and quietly.
• Recheck brake fluid level after the test drive.
• Pad break-in (bedding): do 6-8 moderate stops from ~40 mph down to ~10 mph, with 30-60 seconds of driving between stops to cool.
• If you removed any caliper mounting bolts for any reason: reinstall using a torque wrench and Torque to 123 Nm (91 ft-lbs).

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💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $60-$180 (parts only)

You Save: $170-$270 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-1.5 hours.

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🎯 Ready to get started?

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