I have searched the owner's manual for the 2007 Prius and can't find a way
to silence the backup beeping. My 2004 Prius allowed you to do this. Does
anyone know how to disable this pretty much useless feature?

Kim Rogoff wrote:

1. Power on (not necessarily ready, IG-ON will do).
2. Set Trip/ODO to ODO (if it's already set to ODO, you still have to cycle
through the options: ODO, Trip A, Trip B, and back to ODO).
3. Power off.
4. Power on to ready (brake on).
5. Within 6 seconds, press and hold ODO for 10 seconds or more.
6. WHILE STILL HOLDING ODO *after* 10 seconds, Shift from P to R, then back
to P. Now release ODO.
7. You'll see in the trip display "b on" or "b off".
8. Press ODO to toggle.
9. Now power off.

The Repair manual page says, however, that if you disconnect the 12v
battery, you may lose this change. Repair manual also isn't clear that you
should be holding down ODO while shifting (or operating seatbelt if you
wish to cancel seatbelt buzzers, driver or passenger, using similar steps
replacing shifting w/ fastening seatbelts).

FYI: the beep heard when the car is in reverse is only heard inside the car,
not outside.

Hope this helps. - Greg

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