Had FRM module replaced under warranty all tho the only symptom was a frm communications error on rheingold.

first visit they logged the error and erased it ( i told them the windows would now roll down ocasionally i lied)
second visit they replaced it and proceeded to struggle for 4 days as the new module would not communicate with programming hardware.

I guess the moral of the story is do not attempt to program the frm module as they are brittle and temperamental.