Look under the hood right infront of the driver (left side). It 's the flat, rectangular, and black aluminum box that has 4 large connectors labeled 1,2,3,&4 or c1 c2 etc. You can't miss it.
if you are asking to reset the complete comuter that is something a dealer has to do . if you are talking erase the codes a scan tool to clear the history and codes . You can disconnect thebattery cable and wait a couple mins and reconnect to clear active codes but unless the codes are fixed theymay reappear.
My first guess would be a solenoid not staying engaged. But it could be a pump or valve body issue.Is the check engine light on ? If so you could have trouble codes to point you in the right direction to look.You have checked to see if it is full of fluid, right ?
You most likely have a bad wheel speed sensor. if you have it scanned it should tell you which one it is, If that is the problem. you need to make sure that the scanner used Will read ABS codes
Is real eassy you need a ohm meter disconect the sensor and set the meter on ohms conect to the crank sensor and the scale is 200 to 2000 ohms the resistance
It's the little wires that come out at the bottom of the shift handle inside the steering column cover. The wires usually break and in your situation maybe pinched together.