Toyota 2008 Rav4 Owner's Manual page 141

If the indicator or buzzer comes on...
(p)
(q)
(r)
Key reminder buzzer
'08 Rav4_U (L/O 0802)
Add washer fluid.
Replace engine oil.
Remove key.
Do this.
2008 RAV4 from Feb. '08 Prod. (OM42726U)
131