Toyota 2007 Land Cruiser Owner's Manual page 146

If the indicator or buzzer comes on...
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o) Key reminder buzzer
Take vehicle to Toyota dealer immediately.
Take vehicle to Toyota dealer. If brake system warning light is also on, stop immedi-
ately and contact Toyota dealer.
Close all side doors and back door.
Adjust tire inflation pressure (including spare tire). If light remains on,
contact Toyota dealer.
Shift four−wheel drive control out of "N".
Stop and check.
Take vehicle to Toyota dealer.
Remove key.
Do this.
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