After replacing the brakes the brake pedal is not working properly

Good evening,

You need a scan tool that can access the ABS system to bleed the air from the control module.

https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system

I posted the procedure below for you to follow.

Roy

BLEEDING OF BRAKE SYSTEM
This procedure should be used to insure adequate bleeding and filling of ABS unit, brake lines, master cylinder.

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1. Remove the reservoir cap and fill the brake reservoir with brake fluid.

CAUTION: Do not allow brake fluid remain on a painted surface. Wash it off immediately.

NOTE: When bleeding by pressured fluid, do not depress the brake pedal.

Recommended fluid: DOT3 or equivalent

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2. Connect the clear plastic tube to the wheel cylinder bleeder plug and insert the other end of tube in a half filled clear plastic bottle.

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3. Connect Scan tool to Data Link Connector located underneath the dash panel.

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4. Select and operate according to the instruction on the Scan tool screen.

CAUTION: You have to obey maximum operating time (60 sec) of ABS motor with Scan tool to prevent motor pump burnt.

1. Select Hyundai vehicle diagnosis.
2. Select TIBURON OR ELANTRA.

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3. Select Anti-Lock brake system.

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4. Select air bleeding mode.

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5. Press 'YES' to operate motor pump and solenoid valve.

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6. Wait 60 sec. to operate the air bleeding again. (If not, you may damage the motor)

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5. Pump the brake pedal several times, and then loosen the bleeder screw until fluid starts to run out without bubbles. Then close the bleeder screw.
6. Repeat the step 5. until there are no more bubbles in the fluid for each wheel in the sequence shown in the illustration.
7. Tighten the bleeder screw.
Bleeder screw tightening torque: 7 - 13 Nm (70 - 130 kg.cm, 5 - 9.6 ft. lbs.)

Did you use a scan tool to bleed the ABS unit? The air will not come out at the wheels at all.

Roy

I attached a picture of the location for you. If you have ABS, it will be there.

As far as the pedal, try using vice grips on the brake hoses. With the vice grips attached see if you have a nice hard pedal.

If you do, release the vice grips one at a time until the pedal gets soft. That will be the wheel that contains air.

Roy