This FAQ is thanks to Dan Evans for the photos and notes. Please use this as a guide and not an all inclusive FAQ.
To return the the gears, click here

1. Raise seat all the way up before starting.

2. Remove the three phillips head screws

3. Slide metal plate off

4. Pull the motor assembly toward the front of the vehicle exposing the old damaged gear.

5. Hold the old gear with a pair of vise grips and remove the nut on the end of the shaft and then the old damaged gear.

6. Slide the new gear into place (you will have to install the original collar to retain the automatic preset seat feature. The original collar is magnetic and the replacement collar is not.). If installing the new non-magnetic collar you will need to disable the automatic seat feature. If your old collar is damaged we have clients that have had success by using epoxy to secure the broken pieces to the new gear.

The entry/exit function can be activated or cancelled
by pressing and holding the SET switch
for more than 10 seconds while the ignition key
is in the LOCK position. The indicator light will
blink once when the function is cancelled, and
the indicator light will blink twice when the
function is activated. (Located in the owners manual section 3 Pre-Driving checks and adjustments)

7. Secure the nut on the end of the shaft

8. Slide the motor assembly onto the gear. May need to push or tap the housing to seat the assembly completely.

9. Replace the metal plate and secure the three phillips head screws.

To return to the gears order page, click here

Air Bag Light Reset

You do not need to disconnect the air bag to perform this repair but if for some reason you do, this is the procedure on how to reset the air bag light without having to go to the dealer. (Tested and does work!)

1. Turn the key from off to on. 

2. Watch the airbag light closely. It will stay on for a few seconds and then as soon as it blinks off (the start of the flashing), turn the key off instantly. 

3. Count to 5 (1 Mississippi, 2 Mississippi . . . .) 

4. Repeat steps 1-3 two more times until you have done the cycle three times. 

5. Now turn the key on and watch the light. It will start blinking in a different, slower manner. This is diagnostic mode. You can watch this for a little while, no hurry. 

6. Now turn the key off again, Count to 5 like in step 3 again, and turn back on. If the procedure worked, the airbag light will not be flashing.

Thank you:

http://x.nissanhelp.com Nickoli415 and Dave Mariotti