L-SB-0052-18

December 14, 2018

Shudder/Bump Feeling During 3rd - 4th Gear Shift (40 60 mph)
Service
Category

Drivetrain

Section

Hybrid Transmission/Transaxle

Market USA

Applicability
YEAR(S)

MODEL(S)

ADDITIONAL INFORMATION

2018

LS500H

VDS(s): BYLFF, CYLFF

Introduction

Some 2018 model year LS500h vehicles may exhibit a shudder/bump feeling during 3rd – 4th gear
shift at approximately 40 – 60 mph. Follow the Repair Procedure in this bulletin to address
this condition.
Production Change Information

This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL

ENGINE

LS500h

8GR-FXS

DRIVETRAIN

PRODUCTION CHANGE EFFECTIVE VIN

2WD

JTHBYLFF#J5003132

AWD

JTHCYLFF#J5001358

Warranty Information
OP CODE

DESCRIPTION

TIME

OFP

TC1802

R & R Hybrid Transmission (2WD)
and Reprogram HV ECU

11.5

89980-50220

TC1803

R & R Hybrid Transmission (AWD)
and Reprogram HV ECU

11.8

89980-50280

T1

T2

9B

99

APPLICABLE WARRANTY
 This repair is covered under the Lexus Hybrid Vehicle System Warranty. This warranty is in effect
for 96 months or 100,000 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

Page 1 of 4

L-SB-0052-18

December 14, 2018

Page 2 of 4

Shudder/Bump Feeling During 3rd - 4th Gear Shift (40 - 60 mph)
Parts Information
PART NUMBER
PART NAME

QTY

PREVIOUS

NEW

89980-50220

89980-50221

Computer Assy, Hybrid Vehicle Control (2WD)

89980-50280

89980-50281

Computer Assy, Hybrid Vehicle Control (AWD)

35000-50210

Transmission Assy, Automatic (2WD)

35030-50030

Transmission Assy, Automatic W/Transfer (AWD)

–

1

Required Tools & Equipment
REQUIRED EQUIPMENT

SUPPLIER

PART NUMBER

Techstream 2.0*

QTY

TS2UNIT

Techstream Lite

ADE

TSLITEPDLR01

Techstream Lite (Green Cable)

1

TSLP2DLR01

*Essential SST.

NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 13.30.018 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
 Use Techstream or an approved J2534 interface to perform flash reprogramming updates.
Visit techinfo.toyota.com for more information regarding J2534 reprogramming.

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.

Calibration Information
MODEL

LS500h

DRIVETRAIN

CALIBRATION ID

VDS

PREVIOUS

NEW

2WD

899835023000

899835023100

BYLFF

AWD

899835029000

899835029100

CYLFF

© 2018 Lexus, a division of Toyota Motor Sales, USA

L-SB-0052-18

December 14, 2018

Page 3 of 4

Shudder/Bump Feeling During 3rd - 4th Gear Shift (40 - 60 mph)
Repair Procedure

1. Confirm the condition exists.
Does the vehicle exhibit a shudder/bump feeling during 3rd – 4th gear shift at approximately
40 – 60 mph?
 YES — Continue to step 2.
 NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown
below. Confirm if the HV ECU calibration has been updated.
Is the calibration ID listed the latest HV ECU calibration?
 YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
 NO — Continue to step 3.
Figure 1. Location of Authorized Modifications Label for 2018 LS500h

TOYOTA MOTOR CORPORATION
A UTHORIZE D

M OD IF IC A TIONS

THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
1
2

THESE MODIFICATIONS HAVE BEEN APPROVED
AS APPROPRIATE BY EPA AND CARB
3

DEALER CODE:
CHANGE AUTHORITY:

4

DATE:

5

1

Replacement ECM (PCM) Part Number
(e.g., 89980-50221)

4

Date Com pleted

2

New Calibration ID (e.g., 899835023100)

5

This SB Num ber

3

Dealer Code

Repair Procedure (continued)
© 2018 Lexus, a division of Toyota Motor Sales, USA

L-SB-0052-18

December 14, 2018

Page 4 of 4

Shudder/Bump Feeling During 3rd - 4th Gear Shift (40 - 60 mph)
3. Replace the hybrid transmission.
A. 2WD vehicles:
Refer to TIS, applicable model and model year Repair Manual:
 2018 LS500h:
Drivetrain – Hybrid Transmission/Transaxle – “L310 Hybrid Transmission / Transaxle:
Hybrid Vehicle Transmission: Removal / Installation”
B. AWD vehicles:
Refer to TIS, applicable model and model year Repair Manual:


2018 LS500h:
Drivetrain – Hybrid Transmission/Transaxle – “L310F Hybrid Transmission / Transaxle:
Hybrid Vehicle Transmission: Removal / Installation”

4. Flash reprogram the HV ECU.
NOTE
 The GR8 battery diagnostic station MUST be used in Power Supply Mode to maintain battery
voltage at 13.5V while flash reprogramming vehicle.
 For details on how to use the GR8 battery diagnostic station, refer to the GR8 Instruction Manual
located at 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 HV ECU with the NEW calibration file update.
5. Prepare and install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:
 HV ECU part number [Refer to the Parts Information section for the NEW
PART NUMBER]
 Calibration ID(s) [Refer to the Calibration Information section for the NEW
CALIBRATION ID]
 Dealer Code
 Repair Date
 Change Authority [This bulletin number]
B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1.
The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.
6. Test-drive the vehicle to confirm the condition is no longer present.

© 2018 Lexus, a division of Toyota Motor Sales, USA