Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VIZV
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: STEERING COLUMN: STEERING SYSTEM: PRECAUTION; 2016 - 2020 MY Sienna [12/2015 -        ]

PRECAUTION

1. IGNITION SWITCH EXPRESSIONS

HINT:

The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression

Ignition Switch (Position)

Engine Switch (Condition)

Ignition Switch off

LOCK

Off (Lock)

Ignition Switch ACC

ACC

On (ACC)

Ignition Switch ON

ON

On (IG)

Engine Start

START

On (Start)

2. HANDLING PRECAUTIONS FOR STEERING SYSTEM

(a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in a driving hazard.

3. HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) The vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident. Before servicing (including inspection, replacement, removal, and installation of parts), be sure to read the precautionary notices for the Supplemental Restraint System (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: PRECAUTION ).

4. HANDLING PRECAUTIONS FOR STEERING COLUMN

(a) When handling the electronic parts:

  • Avoid any impact to electronic parts such as ECUs and relays. Replace them with new ones if dropped or subjected to a severe blow.
  • Do not expose any electronic parts to high temperatures or humidity.
  • In order to prevent deformation or malfunctions due to static electricity, do not touch the connector terminals.

(b) When handling the steering column assembly:

  • Avoid any impact to the steering column assembly, especially to the power steering motor, motor rotation angle sensor and torque sensor. Replace the steering column assembly with a new one if it is dropped or subjected to any severe impacts.
  • Do not pull the wire harness when moving the steering column assembly.
  • Do not release the tilt lever when the steering column assembly is not installed on the vehicle.
  • When the steering column assembly has been replaced, perform the assist map writing (See page 2016 - 2020 MY Sienna [12/2015 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: REGISTRATION ).