🔧 ILX - Front Brake Pads & Rotor Replacement

You’ll remove the front wheels, take off the brake calipers and brackets, replace the rotors, then install new pads and reassemble everything. This restores braking power and prevents vibration or grinding from worn pads/warped rotors.

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

Assumption: standard factory front sliding calipers and OEM-style rotors.

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⚠️ Safety & Precautions

• ⚠️ Work on flat ground and support the car with jack stands before going under or pulling hard on bolts.
• ⚠️ Brake dust is unhealthy—avoid blowing it with air; use brake cleaner and a towel.
• ⚠️ Don’t let the caliper hang by the rubber brake hose; it can damage the hose.
• ⚠️ Keep grease and brake fluid off the pad friction material and rotor faces.
• ⚠️ 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 (20-150 ft-lbs range)
• 19mm socket
• 14mm socket
• 17mm socket
• Ratchet 3/8" drive
• Socket extension 3/8" drive (3"-6")
• Flat blade screwdriver
• C-clamp 6"
• Brake caliper hanger hook (specialty)
• Wire brush
• Rubber mallet
• #3 Phillips screwdriver
• Impact driver (manual) (specialty)
• Drain 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 rotors - Replace in pairs - Qty: 2
• Front brake hardware kit (clips/shims) - Qty: 1
• Brake parts cleaner - Qty: 2 cans
• Brake caliper grease (silicone) - Qty: 1
• Anti-seize compound - Qty: 1
• DOT 3 brake fluid - Qty: 1 quart
• Shop towels - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground, set the parking brake, and place wheel chocks behind the rear tires.
• Loosen the front lug nuts slightly with a 19mm socket and breaker bar before lifting.
• Open the hood and locate the brake fluid reservoir. Do not remove the cap yet, but keep an eye on fluid level during piston push-back.
• Set out a drain pan and shop towels in case the reservoir overflows.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the front end

• Use a floor jack (rated 3-ton minimum) to lift the front jacking point.
• Place jack stands (rated 3-ton minimum) under the proper front support points and lower the car onto them.
• Give the car a gentle push to confirm it’s stable before removing wheels.

Step 2: Remove the front wheels

• Remove the lug nuts using a 19mm socket and ratchet 3/8" drive or breaker bar 1/2".
• Remove both front wheels and set them aside.
• After reassembly, Torque to 108 Nm (80 ft-lbs) for lug nuts.

Step 3: Remove the caliper (do not stretch the hose)

• Turn the steering wheel to give yourself room to work at the caliper.
• Use a 14mm socket and ratchet 3/8" drive to remove the two caliper slide pin bolts.
• Lift the caliper off the bracket. Use a brake caliper hanger hook (specialty) to hang it from the strut spring; a caliper hanger is a hook that supports the caliper so the brake hose isn’t stressed.
• Tip: Take a quick photo before disassembly.

Step 4: Remove old pads and the caliper bracket

• Slide the old pads out of the bracket using a flat blade screwdriver if they’re stuck.
• Use a 17mm socket with a breaker bar 1/2" to remove the two caliper bracket bolts.
• Remove the bracket and set it on a towel.
• During reassembly, Torque to 108 Nm (80 ft-lbs) for the caliper bracket bolts.

Step 5: Remove the rotor

• If your rotor has retaining screws, remove them using a #3 Phillips screwdriver or a impact driver (manual) (specialty).
• If the rotor is stuck, tap the rotor hat area with a rubber mallet to break it free.
• Remove the rotor.

Step 6: Clean the hub and prep for the new rotor

• Use a wire brush to clean rust off the hub face (where the rotor sits).
• Spray hub area with brake parts cleaner and wipe with shop towels.
• Apply a very thin film of anti-seize compound to the hub face to reduce future rotor sticking.
• Tip: Keep anti-seize off wheel studs.

Step 7: Install the new rotor

• Clean both sides of the new rotor using brake parts cleaner and shop towels (new rotors often have protective oil).
• Install the new rotor onto the hub.
• If equipped, reinstall the rotor retaining screw(s) using a #3 Phillips screwdriver (snug only).

Step 8: Service the bracket hardware and slide pins

• Remove the old pad clips from the bracket using a flat blade screwdriver.
• Clean the clip contact areas on the bracket with a wire brush and brake parts cleaner.
• Install the new clips from the front brake hardware kit.
• Pull each slide pin out, wipe it clean with shop towels, then apply a thin coat of brake caliper grease (silicone); caliper grease is high-temp lubricant made for brake parts.

Step 9: Reinstall the caliper bracket

• Position the bracket over the new rotor.
• Install the two bracket bolts by hand first, then tighten using a 17mm socket and ratchet 3/8" drive.
• Finish tightening with a torque wrench 1/2" drive: Torque to 108 Nm (80 ft-lbs).

Step 10: Compress the caliper piston

• Check the brake fluid reservoir level under the hood before compressing. If it’s near MAX, remove a little with a towel to prevent overflow.
• Place one old brake pad against the piston face, then use a C-clamp 6" to slowly push the piston back in; a C-clamp is a screw clamp that presses the piston in evenly.
• Compress slowly and stop if you see fluid rising too high in the reservoir.

Step 11: Install the new pads and reinstall the caliper

• Apply a thin layer of brake caliper grease (silicone) to pad ears (where they slide in the clips). Do not get grease on the pad face.
• Install the new pads into the bracket.
• Lower the caliper over the new pads.
• Install the slide pin bolts using a 14mm socket and ratchet 3/8" drive, then tighten with a torque wrench 1/2" drive: Torque to 34 Nm (25 ft-lbs).

Step 12: Repeat on the other front side

• Repeat Steps 3 through 11 for the opposite front wheel.
• Try to do the same steps in the same order to avoid missing anything.

Step 13: Reinstall wheels and lower the car

• Install the wheels and hand-thread lug nuts.
• Lower the car off the jack stands using the floor jack (rated 3-ton minimum).
• Tighten lug nuts in a star pattern with a torque wrench 1/2" drive: Torque to 108 Nm (80 ft-lbs).

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✅ After Repair

• 🦶 Pump the brake pedal 10-15 times until it feels firm before you drive (this seats the pistons against the new pads).
• Check the brake fluid level and top off with DOT 3 brake fluid if needed (do not overfill).
• Inspect for leaks and make sure nothing is rubbing.
• Bed-in (break-in) the pads/rotors: do 6-10 medium stops from ~40 mph to ~10 mph, with 30-60 seconds between stops. Avoid hard stops for the first 200 miles.
• If you hear light rubbing right away, that can be normal; loud grinding is not—recheck your work.

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $160-$380 (parts only)

You Save: $290-$470 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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