Maintenance lite stay on after oil change

Is it a canister filter on top of motor ?

If so you remove the cap & change the
cartridge.

Look up the filter on Wix.Com to see what it
looks like

Need big sockets for that I doubt you have

Set the display window to ODO.
Turn the ignition switch off.
While pressing the reset switch, turn the ignition switch on(IG). Keep pressing the reset switch for at least 5 seconds to complete reset procedure.

*IF this does not work you have be confused with the warning light, it may not be the oil life, but check engine light, refer to owners manual for clarity.

transmission services are usually recommended at about 40,000 miles.

Set your odometer display to Trip A. Turn the ignition off. Hold the odometer stalk in and turn the car to on.(not start). The odometer display will show -------------, keep holding the stalk in until they the all go away and you see 000000. The Maint light is now reset.

the 2007 avalon has a cannister oil filter loof under the passenger front of the car youl see the oil pan and drain plug its just in front of the oil pan towards the front of the car its metal casing with a small square in the center thats where youl need a 3/8 exstension and ratchet to loosin the cap to change the gasket for the cap when you get your oil filter it comes with a small plastic piece so you can drain the oil out of the oil filter case, to change the oil filter itself you need a toyota specific oil filter tool to loosin(can get at any toyota dealer run about 20 bucks) take the filter out change the gasket around the case and thats it hope this helps

press and hold the trip a reset button then turn on ignion key to the run postion till the light turns out

turn ignition key to 'acc' or 'lock' position press and hold tripmeter knob while pressing knob turn key to 'on' but do not turn over engine release trip when light goes out

Your Avalon uses 5-30 oil, 6qt with filter. Trans is Toyota's WS(world standard) ATF(there is no dipstick) There are no grease fittings on the car.
All the maintenance schedules are listed in the owners manual per mileage.

Thank You Very Much for The Maintenance Required Light Info, as far as the flashing car w the key inside. I'm not sure what key we have? When we bought it it only came with one key so we tried to make a duplicate, which ended up not working because we later found out it needs a chip (or probably what I hear as the smart key?) If the light is supposed to be on (and normal) why does it need reset?

The Maint Reqd light blinks after 4,500 miles, and stays ON continuously after 5,000 miles. This is to remind you that you need an oil change. Give the info from you about your key, you do not have a smart key. You have a transponder key. Off topic, but, FYI, a Toyota dealer can program a transponder key for you.
Back to the Maint Reqd light. Here is how you reset it:
Turn the key on.
Make sure that the odometer reads "ODO", and displays the total mileage traveled...If it displays trip a or trip b, push the black button by the odometer to make the display read ODO.
Turn the key off.
Press and HOLD the black trip reset button until advised to release it.
Turn the key ON. (keep holding th reset button down)
Observe the odometer display.
you will see 5 dashes, 4 dashes, 3 dashes, 2 dashes, 11 dash, followed by five zeros, and the total mileage you started with will re-display.
Release the button.
Turn the key off.

Regarding the flashing light with the car & the key: This is the indicator to show potential theives thatyou vehicle has a sophosticated security system, and it CAN NOT be started by "hot-wiring" it. The flashing light is normal, and consumes no battery power. I hope that this helps you understand these two items better. Thanks for choosing FixYA, and the graciousness of a FixYa rating for my solution to you would be greatly appreciated. Glad to be of assistance; please feel free to call upon me anytime. Have a great day.

1. Set the "ENGINE START STOP" or engine switch OFF with the trip meter A reading shown.
2. While pressing the trip meter reset button, set the "ENGINE START STOP" switch or engine switch ON.

Without multi-information display

1. Continue to press and hold the button until the trip meter displays 000000.

With multi-information display

1. Continue to press and hold the button until "COMPLETE" appears on the multi-information display.

there you go jimmy mark as fixya