2006 avalon flashing light with key on dash told need to reset I have a convental key

That's normal. It is indicating your ignition security system is activated and your key is required to start the key or deactivate the security. There is nothing to "reset". If the red light is not flashing when the key is not in the ignition, then there is something wrong with your ignition security system.

Hello, the dash illumination lights are supplied voltage by the tail light fuse, both are on the same circuit, locate the fuse panel at the left lower dash behind the pull out cover, look for the fuse marked 'TAIL'

Is this a new problem? I think it may be normal.

with key off press the trip button on dash and hold turning key on keep holding it will flash and count to 000 let go and turn off key if this does not work try it again, it will reset

The maintence light, is it the same as a check engine light? If it is go to a auto zone parts store and get the codes read and they will reset it after reading codes, and it wont cost anything, its free

Try unhooking your battery for about ten mins. This might reset your security system. You might also try locking all the doors and then unlocking with the key.

First you have to check power steering fluid level, and if it's ok then you have to check power steering pump. If you have a EPS light on your dash, then you have to plug a ODBII diagnostic tool to read code and then interpret what the problem is.

your security system is activated

NEEDS AN OIL CHANGE. YOU CAN RESET IT YOUR SELF. HOLD IN THE "TRIP" BUTTON AND TURN THE KEY ON (DO NOT START IT) 5 DASHES APPEAR AND DISAPPEAR 1 AT A TIME THEN 5 "0"'S AND YOUR DONE. SOMETIMES THEY HAVE TO BE ON "TRIP A" BEFORE YOU START

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.