Toyota 2004 Rav4 Owner's Manual page 118

If the indicator or buzzer comes on...
(h)
or
(i)
(j)
(k)
(l)
(m)
(n)
(o)
110
'04 Rav4_U (L/O 0403)
Take vehicle to Toyota dealer.
If brake system warning light is also on, stop immediately and contact Toyota dealer.
Close all side doors and back door.
Take vehicle to Toyota dealer immediately.
Stop and check.
Take vehicle to Toyota dealer.
Adjust tire inflation pressure. If the light remains, contact Toyota dealer.
Add washer fluid.
Replace engine oil.
Do this.
2004 RAV4 from Mar. '04 Prod. (OM42568U)