When backing up, multiple systems failed at the same time including backup camera, backup sensor distance visuals, backup sensor audio alerts, writing data to flash drive, GPS sensors. Tesla was unable to diagnose the sysfiles to identify the hardware issue behind the simultaneous failures because they are deleted after seven days. Scheduling a service appointment takes much longer than seven days. No one at Tesla can tell me why this happened. No one can assure me that it will not happen again. I hope this is not a widespread issue. I was not injured and my rear bumper only sustained minor damage. But what if someone had been hit because all these systems failed simultaneously?