Disconnect the battery for about 2-3 minutes. But if you have problems with your engine the light will come again on after some time.
The maintenance required light only goes on after 7,500 miles since last 'maintenance'. The maintence required light will not turn off by replacing or changing anything, the only way to turn it off is by putting your key in the key slot next to the light.
Depending on the mileage on the car, there are some maintenance requirements to be done by you, or the car dealer. The maintenance light will stay "on" until these maintenace issues are completed. Your owner's manual also tells you how to reset the maintenance light, and outlines the maintenance required per the mileage on the car.
It meand you need perform maintenance on the vehicle. Check the owners manual for what is recommended at the car's mileage
Go to the Camry dealership they should know.
It normally means you need to change the oil/filter. But it can mean other regularly scheduled maintenance is required. Your owners manual will list the maintenance schedule.
Check the oxygen detector.
press the reset and select switch at same, turn ign. key to II (On) and wait 10 seconds
I don't know but it also happens on my 2000 Camry.
It means there is maintenance required. More than likely it is time to change the oil/filter. Your owners manual will list the service that is needed.
You are supposed to get a 30,000 mile maintenance. So, if you have not, you are past due. Also, make sure the servicer resets the sansor so that the car will recognize that services were performed.
There is a small square button underneath the dash just to the right of the steering collumn. With the key in the ignition, in the off position, press the button for 7-10 seconds, then turn the key to ACC. This should reset the maintenance required light. It is a gimmick to get you to take your vehicle to the dealership so they make money off of you for resetting it.
Time to change the oil/filter.