2008 Toyota 4Runner Owners Manual - Page 192

07 12.25 If the indicator or buzzer comes on... Do this. Replace engine oil. (h) (i) or Take vehicle to Toyota dealer. If brake system warning light is also on, stop immediately and contact Toyota dealer. (j) If the light flashes, take vehicle to Toyota dealer. (k) Close all side doors and back door. (l) Take vehicle to Toyota dealer immediately. (m) Stop and check. (n) Adjust tire inflation pressure (including spare tire). If the warning light comes on after blinking for 1 minute, contact Toyota dealer. 150