L-SB-0148-17-Rev

L-SB-0148-17
Rev1
August 7, 2017
SRS MIL ON DTC B1000
Service
Category
Vehicle Interior
Section
Supplemental Restraint Systems
Market USA
Applicability
YEAR(S)
MODEL(S)
2015 - 2017
NX200T, NX300H
2016 - 2017
RX350, RX450H
ADDITIONAL INFORMATION
REVISION NOTICE
September 12, 2018 Rev1:
 The Warranty Information, Parts Information, and Calibration Information sections have
been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2015 – 2017 model year NX200t, NX300h, and 2016 – 2017 model year RX350 and
RX450h vehicles may exhibit an intermittent MIL ON condition with Diagnostic Trouble Code
(DTC) B1000 (Center Airbag Sensor Assembly Malfunction) stored in the history. This condition
does not affect the proper operation of the Supplemental Restraint System (SRS). The SRS
Electronic Control Unit (ECU) logic has been modified to reduce the possibility of this condition
occurring. Follow the Repair Procedure in this bulletin to address this condition.
Warranty Information
OP CODE
EL9057
DESCRIPTION
MODEL
TIME
OFP
NX200t, NX300h
0.4
89170-78010
0.4
89170-0E190
89170-0E191
89170-0E201
89170-48A81
Reprogram SRS ECU
RX350, RX450h
T1
T2
8B
71
APPLICABLE WARRANTY
 This repair is covered under the Lexus Restraint System Warranty. This warranty is in effect for
72 months or 70,000 miles, whichever occurs first, from the vehicle’s in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2018 Lexus, a division of Toyota Motor Sales, USA
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L-SB-0148-17
Rev1
August 7, 2017
Page 2 of 3
SRS MIL ON DTC B1000
Parts Information
PART NUMBER
MODEL
PREVIOUS
NX200t, NX300h
89170-78010
RX350, RX450h
89170-0E190
89170-0E191
89170-0E201
89170-48A81
PART NAME
QTY
Computer Assy, Air Bag
1
NEW
NOTE
The ECU should NOT be replaced as part of the Repair Procedure.
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream 2.0*
Techstream Lite
QTY
TS2UNIT
ADE
TSLITEPDLR01
Techstream Lite (Green Cable)
1
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 13.10.019 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
GR8 Battery Diagnostic Station*
00002-MCGR8
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
© 2018 Lexus, a division of Toyota Motor Sales, USA
L-SB-0148-17
Rev1
August 7, 2017
Page 3 of 3
SRS MIL ON DTC B1000
Calibration Information
CALIBRATION ID
MODEL
MODEL YEAR
NX200t, NX300h
2015 – 2017
RX350, RX450h
2016 – 2017
PREVIOUS
NEW
8917F78012
8917F78013
8917F48324
8917F48325
8917F0E103
8917F0E210
8917F0E104
8917F0E105
8917F0E114
8917F0E115
Repair Procedure
1. Using Techstream, check for stored DTCs.
Are there ANY DTCs other than DTC B1000 present?
 NO — Continue to step 2.

YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Flash reprogram the SRS ECU.
NOTE
 The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain
battery voltage at 13.5V while flash reprogramming the vehicle.
 For details on how to use the GR8 Battery Diagnostic Station, refer to the GR8 Instruction Manual
located on TIS, Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in Service Bulletin No. L-SB-0001-18 Techstream ECU Flash
Reprogramming Procedure, and flash the SRS ECU with the NEW calibration file update.
3. Start the engine and perform a Health Check to confirm proper vehicle operation.
© 2018 Lexus, a division of Toyota Motor Sales, USA