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How to change front brake discs on TOYOTA 4Runner Off-Road (N210) – replacement guide
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Recommended replacement interval for the part category Brake disc : 50000 km
Important!
This replacement procedure can be used for:
TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.0 (GRN210), TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.7 4WD (UZN215) … View more
The steps may slightly vary depending on the car design.
TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.0 (GRN210), TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) 4.7 4WD (UZN215) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Brake Discs for 4 RUNNER (UZN21_, KZN21_, GRN21_) and other TOYOTA models
Brake disc
Alternative products

Wire brush
WD-40 spray
Brake cleaner
Copper grease
Drive socket # 12
Drive socket # 17
Wheel impact socket #21
Ratchet wrench
Torque wrench
Flat Screwdriver
Pin punch
Tap wrench
Rubber mallet
Crow bar
Wheel chock
Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). AUTODOC experts recommend:
- Replace the brake disks on the car TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_) in complete set for each axis. Regardless of the state of components. This will ensure even braking.
- The replacement procedure is identical for both brake disks on the same axle.
- When changing the brake discs, always replace the brake pads.
- All work should be done with the engine stopped.
Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Use the following procedure:
- Step 1Open the bonnet. Unscrew the brake fluid reservoir cap.Step 2Secure the wheels with chocks.
- Step 3Loosen the wheel mounting bolts. Use wheel impact socket #21.
- Step 4Raise the front of the car and secure on supports.Step 5Unscrew the wheel bolts.AUTODOC recommends:Important! Hold the wheel while unscrewing the fastening bolts. TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_)
- Step 6Remove the wheel.
- Step 7Clean the brake pads fasteners. Use a wire brush. Use a brake cleaner.Replacement: brake discs – TOYOTA 4 RUNNER (UZN21_, KZN21_, GRN21_). Tip:After applying the spray, wait a few minutes.
- Step 8Remove the brake pads retaining clips. Use a crowbar. Use a flat screwdriver.
- Step 9Remove the retainer of the brake pads. Use a pin punch. Use a rubber mallet.
- Step 10Remove the retaining spring of the brake pads.
- Step 11Spread the brake pads. Use a crowbar.
- Step 12Remove the brake pads.
- Step 13Clean the brake hose bracket fasteners. Use a wire brush. Use WD-40 spray.
- Step 14Disconnect the brake hose mounting bracket. Use a drive socket #12. Use a ratchet wrench.
- Step 15Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
- Step 16Unscrew the brake caliper fastening. Use a drive socket #17. Use a tap wrench.
- Step 17Remove the brake caliper.AUTODOC recommends:Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur.
- Step 18Clean the brake disk surface. Use WD-40 spray.
- Step 19Remove the brake disc. Use a rubber mallet.
- Step 20Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
- Step 21Install the brake disc.
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