so unless that’s considered a major issue I don’t know why the Maintenance Required light is on. It was fun to screw up the air filter cover and figure out how to fix it though.
if it's just the maintenance light and not the check engine light, here's what you do:
1) Turn the car on.
2)Hold in the trip odometer knob
3)Turn the car off but keep holding the knob in
4)turn it back on whilst still holding said knob
5) See that the light is off and let go of the knob
6) Exit the vehicle, raise your arms above your head. Your elbows should touch your ears. Jump up and down while shouting "Yota Livin!" repeatedly
I've been working on 4runners and other Toyotas since I was a little guy. Any other questions fire away.