2007 fx35 w/ intelligent key

[acfromsc2007fx35]

went to open auto and intelligent key did not work, door nor ignition. had to use manual key. when i got home , intelligent key worked fine. any suggestions why it quit working and then started back working, now stopped working again? also replaced battery after this all started. still not working.
Modified by acfromsc2007fx35 at 12:30 PM 1/31/2010

[audtatious]

Welcome to NICOclub!

The issue with your key fob is most likely caused by one of the following two:

1) The battery inside the key fob is loosing charge and needs to be replaced.
2) The key fob has lost its original programming and needs to be reprogrammed (can be done by yourself, for free).

Seeing as you already replaced the battery (good move!), I'd recommend performing the reprogramming procedure on the key fob. Here are the instructions for that procedure:

To reprogram (enter new ID) key fob (keyless remote controller) follow the steps.

1. Close all doors and lock all doors

2. Insert and remove the key from the ignition key cylinder more than six times within 10 seconds.
(The hazard warning lamp will then flash.)

NOTE:
Key should be withdrawn from ignition key cylinder completely each time.

NOTE:
Do not rush the insertion/removal key cycling process. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed.

3. Insert key on ignition key cylinder and turn ignition key switch to "AAC" position
At this time, the new ID code is entered and original (previous) ID codes are erase.

4. Press any button on the new remote controller once. (The hazard warning lamp will then flash)

NOTE:
Do not press the button more than one time in the above step. If the button is pressed more than one time, the programming procedure will not be successful. The side marker/tail/license lamps and interior illumination will flash twice when this step is accurately completed and programming is successful.

If there is only one remote controller skip step 5.

5. Additional ID code entry
Release the door lock, then lock again with door lock/unlock switch (In power window main switch)

6. Remove key from ignition

7. Unlock driver side door, open driver side door and then close the door. (END)

NOTE:
If you need to activate more than two additional new remote controllers, repeat the procedure on step 5 "Additional ID code entry" for each new remote controller.

NOTE:
Entry of maximum four ID codes is allowed and any attempt to enter more will be ignore.