I have this KR55WK48903 key and from Google people say I cannot program it myself and must be through dealer. My key is completely keyless, I press door handle to unlock, trunk unlock, push to start. However this website says it's KR55WK48903 is a proximity key.

Then I found this CK-100 and it says the Intelligence Key and PRK is supported as below.

G35 03-07.
G35 IK 05-08.
G35 PRX 07-08.

Maybe someone can clear it up for me please.

 

I decide to take the plunge and go for it with an eBay coupon 20% off few weeks ago.

The one I bought is call "2015 CK-100 Auto Key Programmer V99.99 CK100". It costs $79 USD.

Remarks:
- You will have to program all keys. You cannot add a key.


Step 1.
With car off completely, put key in key hole and connect OBD2 cable to CK100
F1 to continue

Step 2.
Click ESC or wait 10 secs

Step 3.
Select 3) Pin Code Service and choose NISSAN

Step 4.
Use an Android and download the below software to convert BCM code to PIN.
https://www.allfreeapk.com/nissan-in.../download.html

Step 5.
Select 1) Immobilizer

Step 6.
Select G35 [PRX] 07-08

Step 7.
Turn ignition Off if it was on. Just click any key if it's already off.

Step 8.
Remove key from hole

Step 9.
Prog. New Keys

Step 10.
Type the Pin Code from Android app. You need to click Enter twice after you type in the pin on the CK100

Step 11.
Insert key into hole and turn ignition on (not engine, just ignition)

Step 12.
After 5 secs, it will ask you to turn ignition off.

Step 13.
The last pic actually asks you to insert a new key into hole, then on ignition as above for 5 seconds and then turn it off.



Troubleshooting:
I actually did it few times before I got it working.
I don't remember the last exact sequence after the last step 13 but it worked for me. You can try the following.

1. wait longer than 5 seconds, I waited 8 seconds
2. start the engine with the last key
3. wait few seconds after you turn off ignition before you attempt to start the engine
4. Unplug the CK100 before starting the car
5. keep key in hole and start it once
6. put 2nd key in hole and start it once

 

More pictures

 

ECU programming for keys is always an erase and start new method. I've never seen a vehicle that could actually ADD a single key to an existing system.

So everything worked out good with that programmer?

 

Yes it's good and works fine.

Yes, I mentioned the part about unable to add key so people won't think they are adding a key. I don't guess what people might know or not know.

 

My 06 GTO can add a key without erasing 2 previously programmed keys, ask me how I know. The programming part is simple but it takes 30 minutes to do it.