i changed my brake pads and put on 20mm spacers today. after 1hr my ABS, VDC, and SLIP light came on and it was solid. i checked if my VDC was disabled and it was. i didn't check my ABS, but i am sure it is not working also. what went wrong?

 

check your brake fluid.

 

+1.. maybe u got a leak?

 

that simple? what about the sensors?

 

when mine was low they were on, when I filled it up they when away. I searched it on here and it seem others had that problem too.

 

A low brake fluid level in the master cylinder will cause the symptoms you describe. It's the first obvious thing to check, and if it's the problem, the all the lights should go out after a few minutes of driving.