You might have to replace the trip meter and odometer, as its easier to replace the both. My odometer stopped working and got jammed, i took it out and unjammed it, then my trip meter registered i went 300 kays and my odometer only registered a increase of about 30, for me i just replaced the both with another 2nd hand unit and all is good again. You can always adjust the kays on the replacement one to match the amount of kays you have on your car, or you could knock it back a couple of hundred thousand kays, lol.