When we got the call for a quote to replace the key transponder ECU, we checked the key registration procedure in the manual and it looked pretty easy. There was no flat rate time for replacing the Key Transponder ECU, but it looked like it would be under the lower portion of the dash on the driver’s side and would be pretty easy to get to. As it turned out, we were wrong about that part. We quoted an hour labor. Whoops. After a more careful look at the manual, we realized that the ECU was in the upper portion of the dash. We pulled the cover off and found this (red arrow). If this were the right black box, it would have been a pretty easy job. Alas, it was not the right black box.