Hello all…I’ve been searching online & on this site to find exactly where the (ECU program receiver) is located. I lost my key fob & purchased one from a Northeast Keyless site and the first instruction says “locate the ECU”…now that seems easy enough so I go out & stand there gazing under the hood looking for something I haven’t got a clue what the heck it is. Now the rest of the instructions seem pretty straight forward in programming the fob… It’s a 1997 es300, I’m positive one of you experts know where it’s located. Thanks in advance for your knowledge. A picture would be fantastic!

 

You shouldn't need the above/need to access any ECU to program the remote. Maybe I'm wrong.

 

Thanks, here is what I just found online but I’m still confused.Time needed: 5 minutes.

Code:

KEY FOB REMOTE - AFTERMARKET/DEALER INSTALLED

Code:

Step-By-Step How To Programming Instructions

1. Locate ECU Programming ReceiverLOCATE the ECU Programming Receiver.
   
   
2. Insert Key into IgnitionINSERT key into Ignition and TURN to the ON position.
   
3. Enter Programming ModePRESS and HOLD the ECU’s Programming Switch for 3 seconds using a paperclip or small screwdriver. The Status Monitor LED light will turn on for 5 seconds to indicate successful entry into Programming Mode..
   
4. Program RemoteWITHIN 5 seconds, PRESS and RELEASE ANY button on the remote. The Status Monitor LED light will turn OFF, the piezo chirper will chirp ONCE and the exterior lights will flash ONCE to indicate successful programming of the remote. IF you hold the button too long and the vehicle alarm sounds, simply press the TOP button on the remote to reset the alarm.
   
5. EXIT Programming ModeTURN OFF the Ignition to EXIT Programming Mode.
   
6. Test RemotesTEST all remotes. Programming is complete.
   
7. ShareIf these programming instructions helped save you time and money, please consider sharing our website with friends and family so they can do the same.
   

Programming Notes:

• Verify the following prior to following these instructions:
  • Your vehicle is equipped with keyless entry, and
  • You have a key fob remote that is compatible with your vehicle.
• Obtain ALL remote transmitters for this vehicle.
• Important: For MOST vehicles, the ECU Programming Receiver is located UNDERNEATH either the Driver or Passenger front seats. For SOME vehicles, it is located BEHIND the Driver’s Dash and can be accessed by prying out the black faceplate (5”x3”) BEHIND the mirror control switch. It is a BLACK box with 3 connectors and a recessed GREEN RESET button. Refer to the Owner’s Manual for your vehicle’s ECU location.

 

This diagram along with their instructions has made it clear to me now. Thank You.

 

Let us know if that programming routine works. Is there a button as shown?

 

Hello,

Those instructions seem a lot different from a normal programming sequence for those cars. Here you can find pictures for the Wireless Door Lock ECU, it doesn't have any buttons on it, making me wonder if the ECU shown in their instructions is for an aftermarket solution.

Below is the video of an OEM programming procedure, I would try this first, before tearing into the dashboard, since it won't hurt.


Hope this helps and best of luck!