same with me,left rear sensor. do the key trick, put the key in the ignition and turn it to the on position without turning the engine on. press and hold the key in and turn it off and on 3 times so the key stops in the on position. you will see a series of dashes or error code or the word done where your mileage display usually is. if you get a code, look it up and it will tell you if its the left or right side.