🔧 Flex - Front Brake Pads & Rotor Replacement

You’ll remove the front wheels, take off the brake calipers, replace the brake pads and rotors, then reassemble and verify safe braking. New rotors are recommended whenever pads are replaced if the old rotors are worn, rusty, or pulsating.

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

Assumption: factory front single-piston calipers/rotors (most common setup).

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⚠️ Safety & Precautions

• 🛑 Support your Flex with jack stands; never rely on a floor jack alone.
• 🛑 Wear safety glasses; brake dust and rust fall straight down.
• 🛑 Keep brake fluid off paint; it can damage the finish.
• 🛑 Do not press the brake pedal while a caliper is off the rotor.
• 🛑 If your Flex has an electronic parking brake, this job is still front-only, but keep the ignition off and the vehicle stable.

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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
• 1/2" drive breaker bar
• 1/2" drive torque wrench (30-200 ft-lbs range)
• 13mm socket
• 18mm socket
• Ratchet (1/2" drive)
• Short extension (1/2" drive)
• Flat-blade screwdriver
• C-clamp or disc brake piston compressor (specialty)
• Wire brush
• Bungee cord or mechanic’s wire
• Brake parts cleaner
• Nitrile gloves
• Safety glasses

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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 - Qty: 2
• Front brake hardware kit (abutment clips) - Qty: 1
• Brake caliper slide pin grease (silicone-based) - Qty: 1
• Brake quiet / anti-squeal compound - Qty: 1
• Threadlocker (medium strength) - Qty: 1

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Chock the rear wheels with wheel chocks.
• Loosen the front lug nuts about 1/2 turn using a 21mm socket and breaker bar before lifting.
• Open the hood and locate the brake fluid reservoir; you’ll watch the level when compressing pistons so it doesn’t overflow.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and remove the front wheels

• Lift the front using a floor jack at the proper front jacking point.
• Set the vehicle securely on jack stands.
• Remove lug nuts with a 21mm socket and ratchet, then remove both front wheels.

Step 2: Remove the caliper (the clamp that squeezes the pads)

• Turn the steering slightly for access (left side: wheel turned right; right side: wheel turned left).
• Remove the two caliper slide pin bolts using a 13mm socket and ratchet.
• Carefully lift the caliper off the rotor. Support it with a bungee cord or mechanic’s wire so it doesn’t hang by the brake hose.
• Never let the caliper dangle by the hose.

Step 3: Remove old pads and hardware

• Slide the old pads out by hand (use a flat-blade screwdriver gently if stuck).
• Remove the stainless pad clips (hardware) from the caliper bracket.
• Clean the bracket pad “tracks” with a wire brush and spray with brake parts cleaner.

Step 4: Remove the caliper bracket

• Remove the two caliper bracket bolts using an 18mm socket, breaker bar, and ratchet.
• Set the bracket aside.

Step 5: Remove the old rotor

• Pull the rotor straight off the hub.
• If it’s stuck from rust, spray hub area with brake parts cleaner, then wiggle/pull firmly.
• Clean the hub face with a wire brush so the new rotor sits flat (this helps prevent brake pulsation).

Step 6: Install the new rotor

• Clean both sides of the new rotor with brake parts cleaner to remove protective oil.
• Install the rotor onto the hub.
• To hold it in place, thread on one lug nut backward by hand (optional) and snug lightly using a 21mm socket.

Step 7: Reinstall the caliper bracket

• Reinstall the bracket over the rotor.
• Apply a small amount of threadlocker (medium strength) to the bracket bolts.
• Tighten bracket bolts using an 18mm socket and torque wrench: Torque to 115 Nm (85 ft-lbs).

Step 8: Install new hardware clips and new pads

• Snap the new hardware clips into the bracket (they should seat fully).
• Apply a thin film of brake caliper slide pin grease where the pad “ears” contact the clips (metal-to-metal contact points only).
• Install the new pads into the bracket.
• If your pads include wear indicators, install them in the same position as the originals.

Step 9: Compress the caliper piston

• Remove the brake fluid reservoir cap (leave it resting on top to keep dirt out).
• Use a C-clamp or disc brake piston compressor (specialty) to slowly push the caliper piston fully back in.
• Watch the reservoir level while compressing; siphon a little fluid if it gets too high.
• Compress slowly to protect seals.

Step 10: Reinstall the caliper

• Place the caliper over the new pads/rotor.
• Install the slide pin bolts using a 13mm socket and torque wrench: Torque to 25 Nm (18 ft-lbs).
• Double-check the brake hose is not twisted and the caliper moves smoothly on the pins.

Step 11: Reinstall wheels and torque lug nuts

• Reinstall the wheels and hand-thread lug nuts.
• Lower the vehicle off the jack stands using the floor jack.
• Tighten lug nuts in a star pattern using a 21mm socket and torque wrench: Torque to 135 Nm (100 ft-lbs).

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✅ After Repair

• With the engine off, pump the brake pedal 10-15 times until it feels firm (this seats the pads against the rotors).
• Check brake fluid level and top off if needed (do not overfill).
• Start the engine and confirm the pedal feel is normal (it may drop slightly with brake booster assist).
• Test-drive in a safe area. Do a few gentle stops first.
• Pad bed-in (recommended): do 6-10 medium stops from 40 to 10 mph, with cool-down time between. Avoid hard stops for the first 200 miles if possible.
• Recheck lug nut torque after 25-50 miles.

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💰 DIY vs Shop Cost

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

DIY Cost: $160-$360 (parts only)

You Save: $290-$490 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.8-2.8 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.