How to Replace a Caliper in a Hyundai Sonata


Even in a luxury car like the Hyundai Sonata, the quality of the brakes is priceless. Replacing a part like the brake caliper is not an easy task. If you do not have the knowledge and skill to perform this operation correctly, leave it to an expert mechanic.

Things You'll Need

  • Allen/socket wrench
  • Tire iron
  • Jack
  • Caliper for Sonata
  • Metal gaskets
  • Small rubber piece
  • Fresh brake fluid
  • Transparent tube
  • Oil/fluid pan
  • Hi-Scan Pro device

Replacing the Caliper

  • Remove the tire and wheel once the vehicle is securely raised on the jack. If you're replacing a rear caliper, release the parking brake and block the opposite tires beforehand.

  • Disconnect the brake hose from the caliper and remove the brake pads. Plug the hose with a piece of rubber so dirt won't get into the brake fluid.

  • Unscrew and remove the caliper mounting bolts. The caliper should now lift off the rotor or bracket and slide off the pin.

  • Install the new caliper onto the mounting. Attach the mounting bolts and torque them between 59 foot pounds and 74 foot pounds.

  • Connect the brake pads and the hose to the caliper. Use two new metal gaskets with the hose and torque the union bolt to between 18 foot pounds and 22 foot pounds.

  • Bleed the brake system. Because all Sonatas come with anti-lock brakes, this process is more complicated than with other vehicles.

Bleeding the Brake System

  • Connect a clear plastic tube to the bleeder plug on the wheel cylinder and insert the tube's other end into a clear plastic bottle half-filled with brake fluid.

  • Connect a Hi-Scan Pro device to the data link connector underneath the dash panel. Follow the instructions on the Hi-Scan screen.

  • Select the "Hyundai vehicle diagnosis," the vehicle name and the anti-lock brake system. Choose the air bleeding mode, then press "yes" to operate the motor pump and solenoid valve.

  • Wait one minute before you begin the air bleeding to avoid damaging the motor. Pump the brake pedal several times, loosen the bleeder screw until fluid starts running out without bubbles and then close the screw.

Tips & Warnings

  • Watch and follow the maximum operating time for the ABS motor with the Hi-Scan device to avoid burning the motor pump.

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