I am using the following procedure to program my remote (HYQ1512P) for 1996 ES300:
Sit in driver's seat and lock all doors
Unlock and open the drivers side door, others closed
Insert key into ignition and remove
using the door lock control switch perform " lock , unlock " operation 10 times within 30 seconds keep each state for about 1 second
less than 2 seconds after performing the above
continue to press the lock switch on remote for 10 seconds

The door will now lock and unlock itself one time.

This procedure works.............but the remote does not work afterwards. Am I missing some steps? Help!!!!!!!

 

Did you try all these steps? I got them from the forum search engine

Sit in the drivers seat and LOCK all doors

Unlock and open the drivers door.

Using the MANUAL lock switch,on the drivers door, unlock the door 5 times

Close the door.

Open the door.

MANUALLY lock and unlock thye drivers door 5 times. If this sequence fails to work you can try the power switch.

Insert the key into the ignition and turn it to the 'ON' position.

Turn the key to OFF and remove key.

The drivers door will now lock and unlock itselt one time.

Press and hold the 'LOCK' button on the key fob for at least 1 second.

Close the drivers door.

Open the drivers door.

Press and hold the 'LOCK' button on the key fob for at least one second.

Close the drivers door.

Press and hold the 'LOCK' button on the key fob. The door will lock.

Press and hold the 'LOCK' button on the key fob. The door will UNlock.

You should be all set.

 

Yes! This is the procedure I first tried several times. The door doesn't lock and unlock itself as noted half way through the procedure.

 

Hi,

I tried the instruction.
First, it didn't work.
Then, after few tries, it worked.
Catch was ignition key to complete "ON" position.

Thank U very much.
:-))

 

Would that work with a 92es300? I searched and could not find a direct answer. Please help.

 

I had the battery out of the car for 6 months and when i put it back in nothing happens with the key. Here is the code on the key (HYQ1512A) Please help.