There is probably air in your brake lines. Or you might have a bad master cylinder.
ABS brakes are not spongy. If you have spongy brakes the reason is that there is air in the system. You need to have your brakes bled.
Spongy brakes are caused by air in the brake lines.
Air in the brake system. Bleed the brakes again.
Spongy brakes on any automobile are usually caused by air in brake lines. The lines need to be bled according to the owner's manual.
Spongy brakes are usually an indication that there is air in the brake lines. It is also possible the brake fluid is low, so check that first.
Spongy or soft brake pedal usually means there is air trapped in the system. Bleed the brakes starting at the RR then LR > RF and ending at the LF.
You have to bleed your brakes, there is air pockets in the lines...
what can cause a 2002 buick lesabre to not crank
Air in the brake lines would be my first guess.
the most probable cause is, there is air in system, bleed brakes
Two
Reduced stopping power. Increased stopping distance. Noise when applying the brakes. A spongy feel to the brakes. The need to pump up the brakes in order to stop. Any or all of these can be an indicator. If in doubt, take the car to a pro brake shop. No sense playing around with your safety.