The sealing rings are synthetic resin with chamfered ends. Check the condition of the sealing rings, and replace them only if they are worn, distorted, or damaged.
For a better fit, squeeze sealing rings together slightly before installing them.

Apply ATF to the new sealing rings, then install them on the secondary shaft.

After installing the sealing rings, verify the following:
The rings are fully seated in the groove.
The rings are not twisted.
The chamfered ends of the rings are properly joined.
Route Commands
The system accepts these commands
when a route is set.
How long to the destination?
How far to the destination?
Display destination map
Display entire route ...
Command Help
For “Command Help” menu items, all voice
commands that are available for that
system are listed.
Select Read to hear the commands in the
list read aloud.
Voice Commands ...
Wheel Runout Inspection
Raise and support the vehicle.
Check for a bent or deformed wheel.
Set up the dial gauge as shown, and measure the axial runout by turning
the wheel.
...