The steering wheel switches can be used to operate a connected cellular phone.
Operating a telephone using the steering wheel switches

Calling the message sender
Bluetooth® phone
settingsDiagnostic trouble code chart
If a DTC is displayed during the DTC check, check the parts
listed in the table below and proceed to the page given.
HINT:
*1: Comes on MIL (Malfunction Indicator Lamp) light up
*2: "DTC stored" mark means ECM memorizes the
malfunction code if the ECM detects the DTC detection
...
How to register a Bluetooth® device
Display the “Bluetooth* Setup” screen.
*: Bluetooth is a registered trademark of Bluetooth SIG, Inc.
Select “Add”.
When this screen is displayed,
search for the device name displayed
on this screen on the
screen of your Bluetooth®
device.
For details about operati ...
Rear Power Seat Switch Circuit
DESCRIPTION
When the power rear no. 2 seat switch is operated, a recline signal is sent
to the fold seat control ECU.
The ECU activates the reclining motor based on the signal from the power rear
no. 2 seat switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FOLD SEAT CONTROL ECU
...