🔧 Front Brakes & Rotors - Replacement

On your XC90, the front pads and rotors are a straightforward brake service, but the caliper and bracket bolts must be torqued correctly. Since this is a heavy AWD SUV, clean parts, correct torque, and a proper brake pedal reset/check are important for safe stopping.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours

---

⚠️ Safety & Precautions

• Work on a flat surface and support the vehicle with jack stands; never rely on a floor jack alone.
• Front brakes get hot; let the brakes cool before starting.
• Do not press the brake pedal with the caliper removed.
• Use only brake cleaner on brake parts; keep grease off the rotor and pad friction surfaces.
• No battery disconnect is required for this front brake job.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands
• Wheel chocks
• 21mm socket
• 18mm socket
• 7mm hex bit
• Torx T30 screwdriver
• Torque wrench
• Breaker bar
• Brake caliper compression tool (specialty)
• Bungee cord or hook
• Wire brush
• Brake cleaner
• Drain pan
• Safety glasses
• Nitrile gloves

---

🔩 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 pad wear sensor - Qty: 1
• Brake hardware kit - Qty: 1
• Brake cleaner - Qty: 2 cans
• High-temperature brake grease - Qty: 1

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the rear wheels.
• Loosen the front wheel bolts slightly before lifting the vehicle.
• Open the hood and make sure the brake fluid reservoir cap is clean before pushing the pistons back.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen and lift

• Use a 21mm socket and breaker bar to loosen the front wheel bolts one turn each.
• Lift the front of the vehicle with a floor jack (rated 3-ton minimum) and support it with jack stands.
• Remove the wheel bolts and take off the wheel.

Step 2: Remove the caliper

• Use a 7mm hex bit to remove the caliper guide pins.
• Lift the caliper off the bracket and hang it with a bungee cord or hook.
• Do not let it hang by the hose.

Step 3: Remove the caliper bracket and rotor

• Use an 18mm socket to remove the caliper bracket bolts.
• Remove the bracket from the knuckle.
• Use a Torx T30 screwdriver to remove the rotor retaining screw.
• Pull the rotor off. If it sticks, tap it gently and use a wire brush to clean the hub.

Step 4: Clean the mounting surfaces

• Use a wire brush and brake cleaner to clean the hub face and bracket area.
• Make sure the rotor sits flat on the hub.
• Rust here causes brake pulsation.

Step 5: Install the new rotor

• Install the new rotor and secure it with the Torx T30 screwdriver.
• Torque the rotor screw to 10 Nm (89 in-lbs).

Step 6: Reinstall the caliper bracket

• Install the caliper bracket with the 18mm socket.
• Torque the bracket bolts to 175 Nm (129 ft-lbs).

Step 7: Install pads and compress the piston

• Install the new pad hardware and pads in the bracket.
• Use a brake caliper compression tool (specialty) to push the caliper piston back in slowly.
• Install the new front pad wear sensor if equipped.
• Apply a small amount of high-temperature brake grease to pad contact points only.

Step 8: Reinstall the caliper

• Place the caliper over the new pads.
• Use the 7mm hex bit to reinstall the guide pins.
• Torque the guide pins to 35 Nm (26 ft-lbs).

Step 9: Reinstall the wheel

• Install the wheel and snug the bolts with the 21mm socket.
• Lower the vehicle and torque the wheel bolts to 140 Nm (103 ft-lbs).

Step 10: Reset the pedal and inspect

• Press the brake pedal slowly several times until it feels firm.
• Check the brake fluid level and top up if needed.
• Inspect both sides for proper pad seating and no fluid leaks.

---

✅ After Repair

• Start with a low-speed brake test in a safe area.
• Listen for scraping, pulling, or vibration.
• For new pads and rotors, make several moderate stops to begin pad bedding.
• Recheck wheel bolt torque after the test drive.

---

💰 DIY vs Shop Cost

Shop Cost: $500-$900 (parts + labor)

DIY Cost: $180-$380 (parts only)

You Save: $320-$520 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-3 hours.

---

🎯 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.