Why does my MR55 displaying "No TX found" when I try to read a module?

MR55 not finding TX

If your MR55 displays "No TX Found" or "TX Not Found" when you're attempting to program or read a module, it usually means the MR55 battery doesn't have sufficient charge to power the MR55 motherboard, display, and TX. Charge the removable battery for 30 minutes or swap the battery out with a charged battery and try again.