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On Mar 10, 4:19 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:[color=blue]
> "mark_digital©" <XXX-...@comcastnot.com> wrote in message
>
> news:TIydna_dYJ7Jgm7YnZ2dnUVZ_oqmnZ2d@comcast.com...
>
> <snipped>[color=green]
> > Do you happen to know from what power source the anti-theft and glass
> > breakage alarm draws from?[/color]
>
> Not off-hand, but it would have to come from either the fuse panel under the
> dash or the panel under the hood. I would imagine that the system would be
> a 12 volt system and not from the hybrid battery pack.[/color]

The Highlander Hybrid is much like the Prius - the hybrid battery pack
is isolated via a relay when the vehicle is off.

The 12v accessory battery does exactly that - powers the accessories,
like the head and tail lights, the interior map/dome lights, the
alarm, the radio, the fans, etc. It also powers the computers. (The
computers can then flip the relay, allowing the hybrid battery pack to
come online and it is the hybrid battery pack that starts the gasoline
engine.)

If Toyota followed what is done in the Prius, then it's a relatively
small 12v accessory battery (since it is never needed to start the
engine). It's pretty easy to run it down by leaving a dome light on
overnight (say by leaving a door slightly open), or by the parasitic
drain of the alarm system and such by leaving the car undriven for
long periods of time. (Toyota has a TSB for dealers that has
preventative measures listed for the 12v battery if you are leaving it
for 10 or more days... See:
[url]http://autos.groups.yahoo.com/group/highlander_hybrid/files/TSBs/[/url] for
TSB PD016-05 and PD097-06)