🔧 Prius - Front Brake Pad Replacement

On your Prius, replacing the front brake pads involves lifting the front, removing the wheels, unbolting the front calipers, and swapping the pads (plus the anti-rattle hardware). This keeps braking smooth and prevents rotor damage when pads are worn.

Difficulty Level: Intermediate | Estimated Time: 1.5-3 hours

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⚠️ Safety & Precautions

• ⚠️ Keep the car OFF and the key fob at least 10 feet away so the hybrid system can’t wake up.
• ⚠️ Support the car with jack stands before removing wheels or working in the wheel well.
• ⚠️ Use wheel chocks on the rear wheels.
• ⚠️ Do not press the brake pedal while a caliper is off.
• ⚠️ Brake dust is harmful—use brake cleaner and wear a dust mask; don’t blow with compressed air.
• ⚠️ Do not let the caliper hang by the hose—support it with a bungee cord.

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🔧 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
• 21mm socket
• Breaker bar (1/2" drive)
• 3/8" ratchet
• 14mm socket
• Torque wrench (10-200 Nm range)
• C-clamp (6")
• Flathead screwdriver
• Needle-nose pliers
• Wire brush
• Brake parts cleaner
• High-temp silicone brake grease
• Bungee cord
• Safety glasses
• Nitrile gloves
• Dust mask

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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 kit - Qty: 1
• High-temp silicone brake grease - 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.
• Turn the car OFF and keep the key fob away from the car.
• Open the hood and check the brake fluid reservoir level (driver side near the firewall). If it’s near MAX, fluid may rise when you compress the piston.
• Loosen (crack loose) the front lug nuts before lifting the car.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen lug nuts

• Use a 21mm socket with a breaker bar to loosen each front lug nut about 1/2 turn.

Step 2: Lift and support the front

• Place wheel chocks behind both rear tires.
• Use a floor jack to lift the front of the car at the front center jack point.
• Set the car onto jack stands at the front support points.
• Give the car a gentle shake check.

Step 3: Remove the front wheels

• Use a 21mm socket and 3/8" ratchet to remove the lug nuts.
• Remove both front wheels and place them flat under the car as an extra safety backup (optional).

Step 4: Remove the caliper slide pin bolts

• Turn the steering wheel to give more room at the caliper you’re working on.
• Find the two caliper slide pin bolts on the back side of the caliper.
• Use a 14mm socket with a 3/8" ratchet to remove the lower bolt first, then the upper bolt.

Step 5: Lift off and support the caliper

• Lift the caliper off the bracket (a gentle wiggle helps).
• Hang the caliper from the strut spring using a bungee cord.
• Never hang it by the rubber hose.

Step 6: Remove old pads and hardware

• Pull the old brake pads out of the bracket by hand.
• Remove old anti-rattle clips/hardware using a flathead screwdriver.
• Clean the bracket pad “rails” (where the pad ears slide) using a wire brush and brake parts cleaner.

Step 7: Service the slide pins

• Pull each slide pin out by hand.
• Wipe clean, then apply a thin coat of high-temp silicone brake grease.
• Reinsert the pins and confirm they move smoothly.
• Stuck pins cause uneven pad wear.

Step 8: Install new hardware and pads

• Install the new anti-rattle clips into the bracket by hand (press until seated).
• Apply a very thin film of high-temp silicone brake grease to the pad ears (the metal ends) where they contact the clips.
• Install the new pads into the bracket.
• If your new pads include shims, transfer/install them using needle-nose pliers if needed.

Step 9: Compress the caliper piston

• Check the brake fluid reservoir again before compressing.
• Use a C-clamp (6") to slowly push the piston back into the caliper until fully seated.
• Go slow—if fluid starts to rise too high, stop and remove a small amount from the reservoir.

Step 10: Reinstall the caliper and torque bolts

• Place the caliper back over the new pads.
• Reinstall the upper and lower slide pin bolts using a 14mm socket and 3/8" ratchet.
• Tighten with a torque wrench: Torque to 34 Nm (25 ft-lbs)

Step 11: Reinstall wheels and torque lug nuts

• Reinstall both front wheels and hand-thread the lug nuts.
• Lower the car off the jack stands using the floor jack.
• Use a torque wrench with a 21mm socket to tighten lug nuts in a star pattern: Torque to 103 Nm (76 ft-lbs)

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✅ After Repair

• With the car still OFF, press the brake pedal 8-12 times until it feels firm (this seats the pads and piston).
• Check brake fluid level and top off if needed.
• Start the car and confirm the brake warning lights go out normally.
• Do a slow test drive and make a few gentle stops to confirm smooth braking.
• Avoid hard stops for the first 200 miles.

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💰 DIY vs Shop Cost

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

DIY Cost: $50-$140 (parts only)

You Save: $110-$400 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?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.