Brakes have failed😟 FIXED!!

[TsO346]

I know you said your brake fluid level has remained full but I had the same symptoms where the pedal went to the floor and would get a faint whooshing sound while pumping the pedal but for me it was a ruptured rear brake line under the running board area. I had a shop replace the line, they did both since the other line under there wasn’t looking to healthy. Had to have someone else bleed the brakes though because the abs pump went dry and the shop didn’t have the software to properly activate the abs pump. So as long as your abs pump hasn’t gone dry, bleeding shouldn’t be an issue. I was with the guy that had the Ista program and brake bleeding was hell, took long ass time! I also replaced the booster and mc just in case a seal or diaphragm got messed up. Wasn’t too bad of a diy, just have to remove the wiper arms, cowl and wiper pump.. no way it was gonna come out without removing those items.

[X5only]

Indy determined it's the brake booster. All other components of the brake system checked out fine. Diagnosis cost $187. Plan is to refresh the brake system as the components are all original.