Toyota Sienna Service Manual: Description of code registration
It is necessary to register the transmitter ID in the tire
pressure warning ECU when replacing the tire pressure
warning valve and transmitter and/or tire pressure
warning ECU.
(a) Before registration
(1) In case of tire pressure warning ECU
replacement.
- Read the registered transmitter IDs that are
stored in the old ECU using the intelligent
tester and note them down.
- If reading stored transmitter IDs is
impossible due to malfunctions of
components such as the tire pressure
warning antenna and receiver, remove the
tires from the wheels and check the IDs
located on the tire pressure warning valves
and transmitters (See page TW-10).
(2) In case of tire pressure warning valve and
transmitter replacement.
- When replacing the tire pressure warning
valves and transmitters, note down the IDs
written on the tire pressure warning valves
and transmitters.
- Take a note of the 8-digit number
(transmitter ID) written on the tire pressure
warning valve and transmitter.

NOTICE:
- The transmitter ID is written on the tire
pressure warning valve and
transmitter. It will be unable to be read
after installing the tire pressure
warning valve and transmitter on the
tire and wheel. Therefore, take a note
of the transmitter ID before installing
the tire pressure warning valve and
transmitter.
- The ID registration must be performed
for all tire pressure warning valve and
transmitters. Check the DATA LIST,
replace the exchanged ID with a new
ID, and make a new data list of all 4
tires for the vehicle.
(a) Connect the intelligent tester to DLC3 (Procedure
"A").
(b) Turn the ignition switch to the ON position
(Procedure "B").
(c) Select the REGIST TIRE following the intell ...
Other materials:
On-vehicle inspection
1. INSPECT STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the steering pad installed on the vehicle,
perform a visual check. If there are any defects as
mentioned below, replace the steering pad with a
new one:
Cuts, minute cracks or marked ...
Installation
HINT:
Install the RH side by the same procedures with LH side.
1. INSTALL FRONT SPEED SENSOR LH
(a) Install the speed sensor front LH with the bolt.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE:
Keep the tip of the front speed sensor LH.
(b) Install the sensor harness clamps with th ...
Removal
1. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
2. DISCONNECT VENTILATION HOSE
(a) Disconnect the ventilation hose from the ventilation
valve.
3. REMOVE VENTILATION VALVE
(a) Remove the ventilation valve. ...