ES300 1992-1997

Precautions

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Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999


CAUTION
Before servicing the SRS, turn ignition switch OFF, disconnect battery negative terminal and wait at least three minutes. For approximately three minutes after the battery negative terminal is removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least three minutes have elapsed. Failure to disable the airbag system may result in accidental airbag deployment, personal injury, or death.


CAUTION
Do not use electrical test equipment on any circuit related to the SRS unless instructed to. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

  1. When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury.
    CAUTION
    When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.


    CAUTION
    Do not use electrical test equipment to check SRS circuits unless instructed to.


    CAUTION
    Diagnosis sensor unit must always be installed with their arrow marks pointing towards the front of the vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before installation and replace as required.


    CAUTION
    The spiral cable must be aligned in the neutral position since its rotations are limited. Do not turn steering wheel and column after removal of steering gear.


    CAUTION
    Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.


    CAUTION
    Never insert any foreign objects (screwdriver, etc.) into the driver air bag module.


    CAUTION
    Never disassemble the driver air bag module.


    CAUTION
    Never expose the driver air bag module to temperatures exceeding 194°F (90°C).


    CAUTION
    Never allow oil, grease, detergent, or water to come in contact with the driver air bag module.


    CAUTION
    When carrying or handling an undeployed airbag, the trim side (face) of the airbag should be pointing away from the body to minimize possibility of injury if accidental deployment occurs. Failure to do this may result in personal injury or death.


    CAUTION
    Replace airbag system components with OEM replacement parts. Substitute parts may appear interchangeable, but internal differences may result in inferior occupant protection. Failure to do so may result in occupant personal injury or death.


    CAUTION
    Wear safety glasses, rubber gloves, and long sleeved clothing when cleaning powder residue from vehicle after an airbag deployment. Powder residue emitted from a deployed airbag can cause skin irritation. Flush affected area with cool water if irritation is experienced. If nasal or throat irritation is experienced, exit the vehicle for fresh air until the irritation ceases. If irritation continues, see a physician.


    CAUTION
    Do not use a replacement airbag that is not in the original packaging. This may result in improper deployment, personal injury, or death.

  2.  

The factory installed fasteners, screws and bolts used to fasten airbag components have a special coating and are specifically designed for the airbag system. Do not use substitute fasteners. Use only original equipment fasteners listed in the parts catalog when fastener replacement is required.


CAUTION
Conduct self-diagnosis to check entire SRS for proper functioning after replacing any components.


CAUTION
After air bag inflates, the front instrument panel assembly should be replaced if damaged.


CAUTION
Always replace instrument panel pad following front passenger air bag deployment.


CAUTION
During, and following, any child restraint anchor service, due to impact event or vehicle repair, carefully inspect all mounting hardware, tether straps, and anchors for proper installation, operation, or damage. If a child restraint anchor is found damaged in any way, the anchor must be replaced. Failure to do this may result in personal injury or death.


WARNING
Deployed and non-deployed airbags may or may not have live pyrotechnic material within the airbag inflator.


WARNING
Do not dispose of driver/passenger/curtain airbags or seat belt tensioners unless you are sure of complete deployment. Refer to the Hazardous Substance Control System for proper disposal.


WARNING
Dispose of deployed airbags and tensioners consistent with state, provincial, local, and federal regulations.


CAUTION
After any airbag component testing or service, do not connect the battery negative cable. Personal injury or death may result if the system test is not performed first.


CAUTION
If the vehicle is equipped with the Occupant Classification System (OCS), do not connect the battery negative cable before performing the OCS Verification Test using the scan tool and the appropriate diagnostic information. Personal injury or death may result if the system test is not performed properly.


CAUTION
If equipped with OCS, the Seat Weight Sensor is a sensitive, calibrated unit and must be handled carefully. Do not drop or handle roughly. If dropped or damaged, replace with another sensor. Failure to do so may result in occupant injury or death.

If equipped with OCS, the front passenger seat must be handled carefully as well. When removing the seat, be careful when setting on floor not to drop. If dropped, the sensor may be inoperative, could result in occupant injury, or possibly death.


CAUTION
If equipped with OCS, when the passenger front seat is on the floor, no one should sit in the front passenger seat. This uneven force may damage the sensing ability of the seat weight sensors. If sat on and damaged, the sensor may be inoperative, could result in occupant injury, or possibly death.

 
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