I want to extend my gratitude to Patrick S. , it worked ! I just programmed two additional new 315mhz intelligent access keys to my 2017 Explorer XLT.
I can add some more to anyone that is adding two keys not just one. Following the procedure after the 3rd key the programming procedure is done. You cannot do the 3rd and 4th key in one procedure. (or at least that is my experience)
Then to do the 4th key you go through the procedure again inserting 1st, 2nd, 3rd programmed key, then the 4th key is inserted and programmed. I counted the 5 seconds with the tried and true 1001, 1002, 1003, 1004, 1005 method. No digital timer needed.
So to add the 3rd key follow Patrick S's instructions:
1. You must have two working IA keys
2. Insert the 1st working key into the key slot in the center console. Key ring up buttons out.
3. Push the start/stop button and wait 5 seconds.
4. Push the start/stop button.
5. Remove the 1st key and place the 2nd working key in the key slot in the center consule. Key ring up buttons out.
6. Push the start/stop button and wait 5 seconds.
7. Push the start/stop button.
8. Remove the 2nd key and place the new key to be programmed in the key slot. Key ring up buttons out.
9. Push the start/stop button and wait 5 seconds.
10. Push the start/stop button.
The door locks should cycle and you will get a key successfully programmed message on the left dash display.
Then to add the 4th key start over;
1. You must have three working IA keys
2. Insert the 1st working key into the key slot in the center console. Key ring up buttons out.
3. Push the start/stop button and wait 5 seconds.
4. Push the start/stop button.
5. Remove the 1st key and place the 2nd working key in the key slot in the center consule. Key ring up buttons out.
6. Push the start/stop button and wait 5 seconds.
7. Push the start/stop button.
8. Remove the 2nd key and place the 3rd working key in the key slot in the center consule. Key ring up buttons out.
9. Push the start/stop button and wait 5 seconds.
10. Push the start/stop button.
11. Remove the 3rd key and place the new key to be programmed in the key slot. Key ring up buttons out.
12. Push the start/stop button and wait 5 seconds.
13. Push the start/stop button.
The door locks should cycle and you will get a key successfully programmed message on the left dash display.
I took them all in the house and brought them out one at a time and tested that they all worked. When I go to the MyKey display on the instrument panel it now shows 4 admin keys.
So, the owner's manual is not correct.
Thank you,
Jeff