New member here. Just completed my wife's CX-5 first brake job at 53300 miles of service and had this same issue. Put vehicle in maintenance mode replaced rear pads only and had to push piston in for clearance. Put vehicle maintenance mode back to normal. Replaced front pads only. All original pads were about 2-3 mm thickness before replacing. No issues with rotors such as pulsing, shacking, glazing or grooves. I did a full flush of brake fluid and bleed brakes several times to get rid of mushy pedal. No good, still the same issue. All caliper pins were sliding easily no uneven wear of pads. So must be a failing master cylinder was my next thought. Never heard of one failing within 5 years of service. I decided to put car in maintenance mode and back out again. Now Traction Control and ABS lights on. Not Good. Decided to drive car down our dirt road and just for kicks apply E-brake at 10 Mph on and back off several times, well after 4-5 times at 20 mph the brake pedal is back to normal and no Traction Control or ABS warning lights. Go figure, but I am very happy. Hope this will help others.

 

Welcome to the forum

 

Sorry for the delay I got busy here in the shop.

it really sounds like you need to go to a shop and get you complete brake system including your ABS a fluid flush and replacement. Then check the ABS DTS to make sure that they were all caused by your DIY method of servicing the brake fluid.

At this point while your effort was commendable, I think you may have inadvertently got air in the ABS (guessing) which unless you have the correct bleeding and diagnostic equipment will not really be able to correct the issue.

This is a simple job in a qualified service shop and only booked labor of 1.0 or 1 hour. Plus, any needed brake fluid.

Without having this professionally corrected your ABS may either fail or nor work properly should an emergency braking be needed.

 

Again I am very busy today and try to keep up on the this forum

I did not catch the part you said this was happening before your did the resent brake work.. ops!!

It is not uncommon for a master cylinder to fail at those miles. no one can predict how a person brakes which can and does have a direct effect on other brake components.
But here again unless you have a brake pressure tool to disconnect one of the brake lines at the caliper and install it to measure the brake pressure then a lot depends on visual and other observations like your miles of service the condition overall of the chassis area specifically the brakes and the parts you just replaced and the brake pad rubber pedal cover.. Yes, that cover can tell a lot of information. .
And miles in service not years (this is not a warranty issue) to determine brake wear is not so much (realistic thinking when making this statement) a factor for the lifespan of most brake system parts.

 

Thanks for replying. The issue has been resolved as stated in my post.