Loosen the bolts in a crisscross pattern in several steps, then remove the final driven gear (A) from the differential carrier (B).

Install the final driven gear with the chamfer on the inside diameter facing the carrier. Tighten the bolts in a crisscross pattern in several steps.
Armrest
■Using the Driver’s Seat Armrest*
Pull down the armrest. ...
Map Update
INFO button
►Map Update
Update the map database.
When you order a map update, it is mailed to
you on a USB flash drive. ...
Output Shaft (Countershaft) Speed Sensor Replacement (A/T)
Remove the air cleaner assembly.
Disconnect the output shaft (countershaft) speed sensor connector, and
remove the output shaft (countershaft) speed sensor (A).
...