I have no idea if this is actually going to get back to you,
since you chose to use something other than the standard private-message
utility. The "diag screen" entry is detailed in many places,
but generally if you hit "display" to get the little virtual
frame around whatever's already showing and then tap UL, LL, UL,
LL, UL, LL it will generally go to the diag menu. There's also
the trick with the taillights, but I prefer something that doesn't
detract from lamp life.
.
_H*

I have a 2004. Thanks so much for all of your very useful posts. I tried to perform the voltage evaluation from the display, and it will NOT display the voltage info. I hit the start once; hit the "Display" button; see the word "display" in the upper left corner, but as many times as I tapped in various places (desperation) in and near the corner of the box , on the word "display", and also the corner of the display. All with no effect. Reviewing the manual is totally worthless so far. Please clarify how to get to the 12 v battery voltage .

Thanks in advance. Bob