Restraints - Passenger Air Bag Lamp ON
ELECTRICALEL002-05
Title:
PASSENGER AIRBAG INDICATOR LAMP
Models:
'04 - '05 ES 330 & RX 330
February 22, 2005
Introduction
The passenger airbag indicator lamp may switch from ON to OFF for front seat passengers weighing approximately less than 100 pounds, depending on their seating position. It is important for the front seat passengers to know that proper operation of the advanced frontal airbag system is highly dependent on the pressure placed on the seat bottom. Situations that add or subtract sensed weight can result in occupant misclassification. To minimize this situation:
^ Check seating posture.
- Passengers should be seated upright with their back against the seatback and feet on the floor.
^ Check loading conditions.
- Extra weight from items such as bags or groceries or toys hanging on the seatback can add to the sensed weight of the front seat passenger.
- A rear seat passenger lifting the front seat with their legs, objects placed under the front seat, or the front seatback in contact with the rear seat can subtract from the sensed weight of the front seat passenger.
If the passenger airbag indicator lamp continues to switch ON to OFF after checking the above conditions, perform the following repair procedure.
NOTE:
The safest place for children is in the rear seat. Please note that Lexus recommends that you NEVER install a rear-facing child restraint in the front passenger seat, even if the passenger "Airbag OFF" lamp is illuminated. Please refer to the Owner's Manual for additional details.
Applicable Vehicles
^ 2004 - 2005 model year ES 330 and RX 330 vehicles produced BEFORE the Production Change Effective VINs shown.
Warranty Information
Applicable Warranty*:
This repair is covered under the Lexus Comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Production Change Information
Parts Information
Required SSTs
Repair Procedure
1. Unfasten passenger seat and rock the assembly back providing access to the underside of the seat. For information to unfasten the passenger seat, refer to the Technical Information System (TIS): 2004 - 2005 model year ES 330 or RX 330 Repair Manual: Seat: Front Seat Assembly LH: Overhaul.
2. Disconnect the negative terminal of the vehicle battery.
3. Disconnect electrical connectors from Occupant Detection ECU.
4. Remove and replace the Occupant Detection ECU.
5. Reinstall the seat assembly. For more information, refer to TIS: 2004 - 2005 model year ES 330 or RX 330 Repair Manual: Seat: Front Seat Assembly LH: Overhaul.
Torque: 36.8 N.m (375 kgf.cm, 27 ft.lbf)
6. Reconnect the negative terminal of the vehicle battery.
7. Perform Zero Point Calibration and Sensitivity Check following prompts in the Diagnostic tool found under the Occupant Detect menu item (refer to TSIB No. EL007-03, Occupancy Classification System Calibration (DTC B1150 & B1650)."
8. Reinitialize systems affected by the disconnection of the vehicle battery.