Tesla Model 3: Electronic Control Modules

 Shell - Seat Back - Driver (Remove and Replace)

Remove Remove the driver headrest trim from the seat. See Trim - Headrest - Driver (Remove and Replace).   Release the clips that attach the seat back shell to the driver seat, lift up on the shell to unhook it from the seat back frame, and lay the shell back.   Release

 Cover - Seat Back - 2nd Row Seat - RH (Remove and Replace)

Remove Remove the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace). Remove the RH 2nd row seat side bolster. See Bolster - Side - Seat - 2nd Row - LH (Remove and Replace). Remove the RH 2nd row seat back. See Seat Back - 2nd Row - RH (Remove and Install).