Hello.
Soft brake pedal can be due to air in the brake lines, bad master cylinder, leak in the brake system or even having low fluid level.
Vehicles equipped with ABS brakes has different brake bleeding procedure. Unless that procedure is followed it will not be bled properly.
https://www.2carpros.com/articles/how-to-bleed-or-flush-a-car-brake-system
If you do not have any leaks and you still have spongy brake after the proper brake bleeding procedure. It is likely a bad master cylinder.
I have attached the procedure below.
Please let me know of any questions.
Thank you.
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Thursday, November 11th, 2021 AT 11:31 AM