I know this topic is a few years old, but I found it on a Google search because I am another 1:1,000,000. The bigger problem is the car belongs to our customer (94 ES300). We did an intake gasket this past Friday. Vehicle came in with a working legit odometer (thankfully the tech recorded it before working on it, we also have service records that varify), the problem was not noticed until the customer picked up the car. When she called on the phone, I was convinced she had it on the trip setting. She brought the car back and we varified it had reset to 0. I figured maybe the lcd had partially burned, until she hit 100+ miles this weekend and all three digits have kept recording properly. We can only chalk this up to the battery disconnect during the intake job. Now I'm scrambling trying to find a fix. If anyone knows of a fix, please pass it along. Thanks, Scott