Can I program a Smart Key myself?

[ebertm]

Does anyone have the procedure to program a Smart Key? I have done keyfobs for Acura's before and I know they aren't that hard to do. I am not sure what is needed for the Keyless Smart Key's. I have 2, but one is cracked so was going to pick up a spare. Please let me know if you have any information.

[OMF]

Does anyone have the procedure to program a Smart Key? I have done keyfobs for Acura's before and I know they aren't that hard to do. I am not sure what is needed for the Keyless Smart Key's. I have 2, but one is cracked so was going to pick up a spare. Please let me know if you have any information.

Yes, you can register up to the maximum of 8 smart keys for your CX-9. You must have two "valid" keys - that can start the engine. Otherwise you need a special tool (M-MDS).

UPDATE: see another PDF file attached for advanced keyless system card key registration.

[Roger Cooper]

Yes, you can register up to the maximum of 8 smart keys for your CX-9. You must have two "valid" keys - that can start the engine. Otherwise you need a special tool (M-MDS).

UPDATE: see another PDF file attached for advanced keyless system card key registration.

Just purchased two keys on Ebay but they would not go all the way in the ignition switch. To make the keys work the stop step on each side of the key has to be milled down, to the same width as the rest of the key, all the way to the rubber head. Also the rubber head is too thick to go between the plastic protrusions on the ignition switch. I solved this by grinding some rubber off each side of the key. Another good thing to do is have a good locksmith cut the keys for you. He will make less mistakes than some of the other cheaper places. The procedure listed with this article works well so go for it.

[cxgreat]

Had the same problem with my keys, had to mill them down. Definately have to visit the locksmith but programming was a breeze

[Remmington]

Yes, you can register up to the maximum of 8 smart keys for your CX-9. You must have two "valid" keys - that can start the engine. Otherwise you need a special tool (M-MDS).

UPDATE: see another PDF file attached for advanced keyless system card key registration.

I tried the procedure and it doesn't work

[ceric]

Remmington,
A common mistake people make is to have both Key1, Key2 and Key3 nearby while going through the procedure. That confuses the ECU. At any time during the process, only ONE key is present (detectable by ECU) near the CX9.

You should try it again. This procedure has been tried many times. Dealers do the same but charge you 1 hour labour at least.

[Remmington]

Remmington,
A common mistake people make is to have both Key1, Key2 and Key3 nearby while going through the procedure. That confuses the ECU. At any time during the process, only ONE key is present (detectable by ECU) near the CX9.

You should try it again. This procedure has been tried many times. Dealers do the same but change you 1 hour labour at least.

I am referring to the advanced key procedure, which says two have key 1 & 2 plus the new key inside the vehicle

[ceric]

Remmington,
I checked my 2008 Workshop Manual and found some discrepancy against the PDF above.
Here is what is on the Workshop manual of 2008. This differences may be significant, may be not. It does not hurt for you to try it, especially if you have a 2008. The one OMF posted is likely to be for 2007 model.
Again, when "using key x" (in the following procedures), remove the other 2 keys from vicinity so that the ECU is not confused.

Key 1 and Key 2 are valid keys. Key 3 is the one to be programmed.
---------------------------------------------------------------------------------------
1. Prepare key 3 for programming
2. Start the engine using key 1.
3. Verify that the security light illuminates for approx. 3 s, and then goes out
4. Turn the ignition switch to the LOCK position.
5. Using key 1, turn the ignition back to the ON position
6. Verify that the security light illuminates for approx. 3 s, and then goes out
7. Using key 1, turn the ignition switch to the LOCK position within approx. 4 s after the security light goes out.
8. Remove key 1
9. Repeat Step 5-8 using key 2 instead of key 1
10. Repeat Step 5-8 using key 3 instead of key 1
11. If an additional key is to be programmed, repeat Steps 2-10 with the additional key as key 4
12. Verify that all keys can start the engine for 5 s or more after the procedure