Replace front brake pads on a 2016-2024 Hyundai Tucson 2.5L I4 AWD, including caliper service and proper torque procedures.

Warnings

Tools required

Parts

• Front brake pad set (includes shims and clips) × 1 — Use OEM or equivalent meeting KIA/Hyundai specifications
• Brake hardware kit (anti-rattle clips) × 1 — Often included with pad set

Fluids

• DOT 4 Brake Fluid — 0.25 qt

Preparation

1. Park vehicle on level, solid surface and engage parking brake firmly
2. Chock rear wheels securely
3. Open hood and locate brake fluid reservoir. Remove cap and extract approximately 2-3 oz of fluid with turkey baster or fluid extractor to prevent overflow when compressing pistons
4. Loosen front wheel lug nuts 1/4 turn while vehicle is on ground
5. Lift front of vehicle with floor jack at manufacturer-designated lift point and support with jack stands rated for vehicle weight
6. Remove front wheels completely and set aside

Procedure

1. 1

   Inspect brake system condition
   Before beginning work, inspect the brake rotor for deep scoring, cracks, or heat damage. Check brake hose for cracks, bulges, or leaks. Measure rotor thickness if micrometer available (minimum thickness stamped on rotor hat). If rotor shows excessive wear or damage, replacement is required before installing new pads. Check caliper for fluid leaks around piston boot.
2. 2

   Remove caliper slide pin bolts
   Locate the two caliper slide pin bolts on the rear of the caliper (accessible from behind). These are 12mm hex head bolts. Remove the lower slide pin bolt completely. The upper bolt can remain in place as a hinge point, or remove both bolts if you prefer to remove caliper completely. Keep track of any washers or hardware.
3. 3

   Pivot caliper upward and secure
   If you removed only the lower bolt, pivot the caliper upward on the upper slide pin. If you removed both bolts, lift caliper straight off. Support the caliper using a bungee cord or strong wire attached to the suspension or chassis. Ensure absolutely no tension is placed on the brake hose. The caliper must be fully supported by the cord, not hanging by the hose.
   ⚠️Do not allow caliper to hang by brake hose under any circumstances
4. 4

   Remove old brake pads and hardware
   Remove the inner and outer brake pads from the caliper bracket. Note the orientation and position of any anti-rattle clips, shims, or springs for reinstallation. Remove and discard the old anti-rattle clips from the caliper bracket. Take a photo if needed to remember hardware orientation.
5. 5

   Clean caliper bracket and slide pins
   Spray caliper bracket thoroughly with brake cleaner, scrubbing with wire brush to remove all rust, debris, and old grease from pad contact surfaces. If you removed both slide pin bolts, extract the slide pins from the caliper bracket. Clean pins thoroughly with brake cleaner and inspect rubber boots for tears or damage. Replace boots if damaged.
6. 6

   Compress caliper piston
   Using a C-clamp or brake caliper piston tool, slowly compress the caliper piston(s) fully into the caliper bore. Place the clamp against the back of the caliper body and the clamp pad against the piston face or old brake pad. Compress slowly and evenly. Monitor the brake fluid reservoir to ensure it does not overflow. If fluid rises to near-full, extract more fluid.
7. 7

   Install new hardware and lubricate
   Install new anti-rattle clips onto the caliper bracket, ensuring they snap fully into place. Apply a thin layer of silicone brake grease to the slide pins (not petroleum-based grease). Apply small dabs of brake grease to the pad backing plate edges where they contact the caliper bracket (not on friction material or rotor contact areas). If slide pins were removed, reinstall them into bracket with greased boots properly seated.
8. 8

   Install new brake pads
   Install new inner and outer brake pads into the caliper bracket with friction material facing the rotor. Ensure any wear indicators are positioned correctly (squealer tabs typically on inner pad, positioned at top). Verify pads are fully seated in the anti-rattle clips and can move slightly but are secured.
9. 9

   Reinstall caliper
   Lower the caliper back down over the brake pads and rotor (or position completely if both bolts were removed). Align the caliper slide pin bolt holes. Apply a small amount of silicone brake grease to the slide pin bolt threads and under the bolt heads as specified.
10. 10

    Torque caliper slide pin bolts
    Install both caliper slide pin bolts and torque to specification using a torque wrench. Torque in two stages: first to 50% of final value, then to final specification. Verify bolts are fully seated and caliper moves smoothly on slide pins.
    ⚠️Critical safety fastener. Must be torqued to exact specification with calibrated torque wrench.
    Torque spec

    Caliper Slide Pin Bolts35 Nm (26 lb-ft)
11. 11

    Repeat for opposite side
    Repeat steps 1-10 for the opposite front wheel. Both front brake pads must be replaced as a set to ensure even braking performance.
12. 12

    Reinstall wheels
    Reinstall both front wheels, threading lug nuts on by hand first. Tighten lug nuts in a star pattern with lug wrench snug but not fully torqued while vehicle is on jack stands.
13. 13

    Lower vehicle and torque wheels
    Remove jack stands and carefully lower vehicle to the ground. With vehicle weight on wheels, torque lug nuts to specification in a star pattern using torque wrench. Go around the star pattern 2-3 times to ensure even torque.
    ⚠️Improperly torqued lug nuts can cause wheel detachment while driving
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)
14. 14

    Restore brake pedal pressure
    Before moving vehicle, pump the brake pedal slowly 10-15 times until firm resistance is felt. The pedal will initially go to the floor because pistons were compressed. Check brake fluid reservoir and top off to MAX line with fresh DOT 4 brake fluid if needed. Replace reservoir cap securely.
    ⚠️Vehicle cannot be safely moved until brake pedal pressure is restored. Pedal must feel firm before driving.

Reassembly

1. Ensure brake fluid reservoir is filled to MAX line with DOT 4 fluid and cap is secured
2. Verify all tools and parts have been removed from wheel wells and under vehicle
3. Check that all caliper slide pin bolts and wheel lug nuts have been properly torqued

Verification

• Start engine and pump brake pedal several times. Pedal should feel firm and not sink to floor
• With engine running, firmly apply brake pedal. Pedal should hold firm pressure without slowly sinking
• Perform low-speed test drive in safe area (parking lot). Test brakes at 5-10 mph to verify proper operation
• Check for unusual noises, vibrations, or pulling to one side during braking
• After test drive, re-check wheel lug nut torque and verify no fluid leaks around calipers
• Break in new pads properly: avoid hard braking for first 200-300 miles to allow pads to properly seat and cure
• Re-check brake fluid level after 24 hours and after 100 miles of driving

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