Lexus ES300 (1997 year). Manual — part 26

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BODY ELECTRICAL — ACCESSORIES

ACCESSORIES

DESCRIPTION

The new ES300 includes the accessory systems shown in the below.

System

Outline

Power Window System

The power window system includes one-touch auto down and key-off
operation functions. The one-touch auto down function automatically opens
the driver’s door window fully. The key-off operation function makes it
possible to operate the power windows for approximately 45 seconds after the
ignition key is turned to the ACC or LOCK position, if the front doors are not
opened.

The basic construction and operation are the same as in the previous model.

Door Lock Control System

This system has a “key-linked lock and unlock function” and a “key-confine
prevention function”. All doors can be locked and unlocked simultaneously
by a key operation at the front fight or left door (the key needs to be operated
twice to unlock all the doors at the driver’s door). If the door lock operation
is performed when one of the front doors is open and the ignition key inserted
in the key cylinder, doors are unlocked automatically to prevent the ignition
key from being left inside the vehicle.

The basic construction and operation are the same as in the previous model.

Wireless Door Lock Remote
Control System

A remote control system is adopted in which the lock and unlock functions
of all doors and panic alarm function can be controlled by the signals emitted
from a transmitter. The transmitter is also provided with a 2-step unlock
function to unlock all the doors by pressing the switch twice. For details, see
page 104.

Theft Deterrent System

As in the previous model, when an attempt is made to forcibly enter the
vehicle or open the hood or trunk lid without a key, or when the battery
terminals are removed and reconnected, this system sounds the horn and
flashes the headlights and taillights for about 1 minute to alert the owner. At
the same time, it locks all the doors and electronically disconnects the starter.

The basic operation is the same as in the previous model.

Power Seat

As in the previous model, the front seats am power assisted by electric motors
so that the seat positions can be adjusted easily by a simple switch operation.

The basic construction and operation are the same as in the previous model.

Seat Heater

The heater output temperature switchover (HI or LO position) function that
was provided in the previous model’s seat heater system has been
discontinued. Along with this change, the previous 3-mode, HI-OFF- LO seat
heater switch has been changed to the 2-mode, ON-OFF seat heater switch.

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System

Outline

SRS Airbag

The SRS (Supplemental Restraint System) airbag is provided for the driver
and front passenger. The SRS airbag has been designed to lessen the shock
to the head and chest of the driver and front passenger in the event of a
frontal impact collision as a supplement to the seat belt.

A 1-sensor type airbag system is used in which the detection of
deceleration during a collision as well as control of the airbag system is
accomplished by the airbag sensor assembly.

The basic construction and operation am the same as in the ’95 LS400.
However, the inflator for front passenger has been changed.

For details, see page 108.

Cruise Control System

Once it has been set at desired vehicle speed, this system automatically
adjusts the engine throttle position to maintain the vehicle speed at the
desired speed without operating the acceleration pedal.

The basic construction and operation are the same as in the previous
model.

However, in the new model, a new type actuator has been adopted.

Also, the function of the cruise control ECU has been changed.

For details, see page 112.

Moon Roof

A tilt-up and sliding type moon roof has been adopted. Also, a “onetouch
slide open” function used in the ’95 LS400 has been newly adopted.

The basic operation is the same as in the ’95 LS400.

Electrical Remote Control
Mirror

The electrical remote control mirrors used in the previous model are also
used in the new model. Heaters are also included in the outside rear view
mirrors which are linked to the rear window defogger.

Key Reminder System

It sounds a buzzer to warn the driver that the ignition key is still in the key
cylinder. This helps to prevent the driver from getting locked out.

The basic operation is the same as in the previous model.

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WIRELESS DOOR LOCK REMOTE CONTROL SYSTEM

1. General

The wireless door lock remote control system is a convenient system for locking and unlocking all the
doors, from a distance. This system in the new ES300 has the following features:

The new model adopts a multi-function type wireless door lock remote control system which features
luggage compartment door opener and panic alarm operation, in addition to all doors lock and unlock
function of the previous model.

To accommodate multiple functions, the transmitter has been changed from the previous integrated type
with the ignition key to a separate key-holder type.

The antenna that receives transmitter signals has been changed from the previous printed wiring of the
rear window defogger to the one that is enclosed in the wireless door lock ECU.

To facilitate the verification of its operation, this system sounds the beeper and flashes the parking lights
and taillights upon completion of each operation.

A prohibit mode, which prohibits the activation of this system, has been newly provided in the registration
function of the transmitter recognition code.

System Diagram

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BODY ELECTRICAL — ACCESSORIES

2. Layout of Functional Parts

The major functional parts of the wireless door lock remote control system are shown below.

3. Construction

Transmitter

To accommodate the multiple functions
provided in the wireless door lock remote
control system, and to improve the
ease-of-use of the switches, a keyholder type
transmitter, which is separate from the
ignition key, has been adopted. This
transmitter is equipped with a panic switch
which activates the security alarm of the theft
deterrent system.

Wireless Door Lock ECU

The frequency of the signal transmitted by the transmitter has been raised and the antenna which receives
this signal has been changed from the printed wiring of the rear window defogger to the one which is
enclosed in the wireless door lock ECU.
Accordingly, the wireless door lock ECU mounting position has been changed from inside the luggage
compartment to the inside of the instrument panel.