Hey All,

I have seen some threads about this and have been attempting to troubleshoot my issue with no success so I'm hoping for some assistance here.

Intermittently while driving, my ABS/VSC/TRACK/BRAKE lights will come on the dash. When you stop driving, park the car and turn it off and then back on the lights are no longer there. This makes it impossible to take it somewhere to get the codes read! I have a bluetooth code reader, but it doesn't read ABS codes - only check engine codes.

Aside from the lights, the brakes are working fine. I have tried the following:

Bleed all 4 calipers and topped off fluid
Replaced brake light switch
Checked for stuck caliper pistons
Cleaned front wheel speed sensors (will be cleaning the rears this evening)
edit: Also have done ZPC (zero point calibration)

I am actively trying to resolve this. One thing I found this past weekend was a slide pin not moving very freely on a rear caliper. After loosening the slide pin, I had to pry it out of the bracket to actually remove it. I've ordered new slide pins and caliper brackets for the rear (should be delivered this week) hoping maybe that is my issue and will be posting back here if that resolves it. I'm not even sure if a binding slide pin might cause the abs light - wondering if someone here might know that?

Any other ideas? It's driving me INSANE! I hate just throwing parts at it not knowing if they're actually faulty (again, can't read codes to confirm anything because any time they appear they go away when the car is shut off). My next future step might be to just replace all 4 wheel speed sensors if nothing else works.