Tools required:
Lug wrench (tire iron)
21mm socket & wrench
8mm hex wrench
Front sensor - PN# 68003281AA
If your dash looks like this, you may need to replace a wheel speed sensor
Step 1: Jack up vehicle and remove tire
Step 2: Use 21mm socket wrench to remove 2 bolts on backside of caliper. Once caliper is removed, place on a bucket so the brake lines don't get damaged
Step 3: Once caliper is removed - take the rotor off and set aside
Step 4: Use 8mm hex to remove the screw holding in the sensor and pull sensor out. Mine ended up breaking (that’s my luck). I was able to screw a screw into the piece of sensor left in the hole and eventually got it out (1 broken screw, 2 broken drill bits, and a broken screw driver later – don’t ask!) The piece of sensor that was stuck came out in pieces for me, but I got it all.
Step 5: Follow the sensor harness and disconnect it from the brake line. It is held in by clips.
Step 6: Reach behind shock tower and feel where the plug for the harness is attached to the frame. It is held in by 2 plastic push in fasteners. Just pull those out from the frame so you can see the plug for the harness. The plug has a red plastic tab on it. I used a small straight screwdriver to push the red tab up. Now the plugs can be pulled apart.
Step 7: Insert the new sensor into the hole and screw into place using 8mm hex. Route the attached wire (following the old harnesses route) and connect it to the plug behind shock tower. Reattach new wire harness to existing clips to the brake line and to frame behind shock tower. I don’t have any pics of the reinstall because of all the trouble I had digging out the old sensor. Here is what the NEW sensor looks like though.
Step 8: Place rotor back onto studs. Mount the caliper back over the rotor and secure with bolts using 21mm socket wrench. Mount tire back on Jeep.
***You may need to disconnect the battery for a certain amount of time and/or take Jeep for a ride before codes will clear***
Good Luck!!!