07 TL Type S. Recently changed the brake pads and noticed my brake became very squishy. I fully purged the car three times now and the issue is still concurrent. I also changed the master cylinder and purged it as well but pedal still sinks. I am thinking of just changing the calipers overall but am open to any suggestions on a fix. Thanks.

 

First off make sure calipers are installed right with the bleeder being at the TOP of the caliper and not the bottom.

Are you losing any brake fluid? How are you bleeding the brakes?

 

The brake calipers are installed right and I don't see any leaks under the car. I am bleeding the front brake by pressing three times on the pedal. I think it is either the ABS module or the brake booster. I think it's the ABS module because the pedal is still soft and the ABS light is on. I also think it may be the brake booster because the pedal makes a weird groan wheezing noise when pressed on.

 

When was the last time the brake fluid was changed?

 

Is your ABS light on? If it isn't it sounds like you have air in your system. Good time to do an entire brake fluid flush, as that's the only way to ensure you have no air in the system. If you don't know, on the TL you start the bleed from the front left and clockwise as opposed to starting from the back right as on most vehicles.