Toyota SCION XB 2005 Owner's Manual page 84

If the indicator or buzzer comes on...
(h)
(i)
(j)
(k)
(l)
(in red)
(m)
Key reminder
(n)
buzzer
78
Stop and check.
Take vehicle to Scion dealer. If the brake system warning light is also on, stop immedi-
ately and contact Scion dealer.
Close all side doors and back door.
Take vehicle to Scion dealer immediately.
Stop and check.
Take vehicle to Scion dealer.
Remove key.
Do this.