How to reprogram remote

you can have a shop reprogram the reciever in the car to accept the remote. once the battery is removed from the remote it resets the code it transmit (Rolling code)

buy new remotes then have the keys/remotes reprogrammed.as your celica has a rolling code once done, only you can start it with your remotes/keys.(a rolling code means that every time you lock the car with the remote one of the two codes in the remote changes,so only you can start the car)

WHEN YOU CHANGE THE BATTERY NO NEED TO REPROGRAM THE REMOTE.
THE FLASHING LIGHT TELLS YOU IT IS SENDING A SIGNAL THAT IS BEING RECIEVED IT IS JUST NOT THE CORRECT CODE TO OPEN THE DOOR.
REPROGRAMING THE REMOTE SHOULD SOLVE THE PROBLEM

HOPE THIS HELPS

You don't need to reprogram. You need to make sure your door sensors haven't been bumped and misaligned. Each of them has a small light that will be lit when they are properly aligned. Tweak them a bit. If the light doesn't come on you probably have a sensor that has quit working.

Reset the Liftmaster unit. There should be a red reset button on the unit in the garage. If this does not work, reset the breaker. Good Luck!

THE UNIT CAN WORK WITH EITHER ROLLING CODE OR NON ROLLING CODE, NOT BOTH.
I WOULD GUESS THE CLICKER IS NOT ROLLING CODE.
I HAVE NEVER HAD GOOD LUCK WITH THE CLICKER REMOTES - GO AND GET ANOTHER REAL REMOTE - THE SAME SERIES AS THE ORIGIONAL.

GET A REFUND ON THE CLICKER - OR HAVE IT BRONZED FOR THE MANTEL.

HOPE THIS HELPS

Anytime a door opens and/or closes by itself I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

Do the above check just to be sure. If your unit is more thaan about 2 years old (freq. 390) you CAN buy an older non security plus remote and program it to your unit. this should eliminate the neighbors remote operating your door.

HOPE THIS HELPS

I have an A4 and did this to re-program my key:

1. used the key to start the car...then turned it off
2. put the key in the driver door (door closed)
3. pressed the lock button on the key fob once
4. turned the key to lock the door.

This is basically the steps in the owners manual, but the car must be started with the key first, and the key must be in the door lock before pressing the lock button.

There are two types of technology with this operator (rolling code and non-rolling code). This operator will except one or the other but not both. It is not uncommon for a rolling code (Security+) remote or keyless to lose the "rolling"part of its technology and become a non-rolling code device so it is not compatable with the rolling code technology. You will need to replace the one remote or keyless that is not like the others.

Its possible you held the learn button down too long, this will erase all remotes. The best way to fix this is to press the learn button once and the hold down the button on the remote until the lights blink, you will have to do this with all remotes.
hope this helps.