🔧 Front Brake Pads - Replacement

Your Sienna’s front brake pads wear faster than the rear pads, so replacing them when they get thin helps keep braking smooth and safe. This job also gives you a chance to inspect the rotors, calipers, and slide pins for uneven wear or sticking.

Difficulty Level: Intermediate | Estimated Time: 1.5-2.5 hours

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⚠️ Safety & Precautions

• Work on a level surface and chock the rear wheels before lifting the front end.
• Use jack stands; never rely on the floor jack alone. A floor jack is a lifting tool, not a support stand.
• Brake dust may be present. Wear safety glasses and gloves.
• Do not press the brake pedal with a caliper removed.
• If the caliper piston is hard to compress, stop and inspect the slide pins and brake hose.
• No battery disconnect is required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• 21mm lug wrench or 21mm socket
• 14mm socket
• 3/8-inch ratchet
• Breaker bar
• Torque wrench
• C-clamp or brake caliper compression tool (specialty)
• Bungee cord or mechanic's wire
• Floor jack (rated 3-ton minimum)
• Jack stands (rated for vehicle weight)
• Wheel chocks
• Flat-blade screwdriver
• Wire brush
• Brake cleaner
• Safety glasses
• Nitrile gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Front brake pad set - Qty: 1
• Brake caliper slide pin grease - Qty: 1
• Brake pad hardware kit - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Loosen the front lug nuts slightly before lifting the vehicle.
• Keep the ignition off while servicing the brakes.
• If your brake fluid level is near the MAX line, watch it while compressing the caliper piston. Fluid can overflow.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the front wheel

• Use the 21mm lug wrench or 21mm socket to loosen the front lug nuts on both front wheels.
• Do not remove them yet.

Step 2: Lift and support the front of the van

• Use the floor jack at the front jacking point and raise the vehicle.
• Place the vehicle securely on jack stands.
• Lower the van gently onto the stands and give it a small shake to confirm it is stable.

Step 3: Remove the wheel

• Finish removing the lug nuts with the 21mm lug wrench or 21mm socket.
• Remove the wheel and set it aside flat on the ground.

Step 4: Remove the caliper bolts

• Use the 14mm socket and 3/8-inch ratchet to remove the two caliper slide pin bolts.
• Support the caliper with a bungee cord or mechanic's wire so the brake hose is not stretched.

Step 5: Remove the old pads and hardware

• Lift the caliper off the bracket carefully.
• Remove the old brake pads from the bracket.
• Remove the pad clips and hardware from the bracket if they are included in your new kit.
• Tip: Take a quick photo before removal.

Step 6: Inspect and clean the bracket

• Use a wire brush and brake cleaner to clean rust and brake dust from the pad contact points.
• Inspect the rotor surface for deep grooves, heavy rust, or cracks.
• If the rotor is badly worn, it should be replaced or resurfaced before installing new pads.

Step 7: Service the slide pins

• Remove the slide pins if needed and inspect them for sticking or torn boots.
• Apply brake caliper slide pin grease to the pins after cleaning them.
• Make sure the pins move smoothly by hand.

Step 8: Compress the caliper piston

• Use a C-clamp or brake caliper compression tool (specialty) to slowly push the piston back into the caliper.
• Move slowly so brake fluid can return to the reservoir.
• Keep the old inner pad against the piston if needed to spread the load.

Step 9: Install the new hardware and pads

• Install the new pad clips and hardware from the brake pad hardware kit.
• Install the new inner and outer brake pads into the bracket.
• Make sure they seat fully and move freely in the clips.

Step 10: Reinstall the caliper

• Place the caliper back over the new pads.
• Use the 14mm socket and 3/8-inch ratchet to install the caliper slide pin bolts.
• Torque to 34 Nm (25 ft-lbs).

Step 11: Reinstall the wheel

• Put the wheel back on and install the lug nuts finger-tight.
• Lower the vehicle carefully with the floor jack.
• Use the 21mm lug wrench or 21mm socket to tighten the lug nuts in a star pattern.
• Torque to 103 Nm (76 ft-lbs).

Step 12: Repeat on the other side

• Repeat the same process on the opposite front wheel.
• Replace front pads in pairs so braking stays even.

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✅ After Repair

• Before moving the van, press the brake pedal several times until it feels firm.
• Check the brake fluid reservoir level and top off only if needed.
• Test brake operation at low speed in a safe area.
• Expect new pads to need a short break-in period for best performance.
• Listen for rubbing, clicking, or grinding. Recheck the installation if you hear anything unusual.

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💰 DIY vs Shop Cost

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

DIY Cost: $80-$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 1.5-2.0 hours.

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🎯 Ready to get started?

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