T-SB-0019-23

T-SB-0019-23
April 24, 2023
Lack of Maintenance Reminder in MID
Service
Category
Vehicle Interior
Section
Meter/Gauge/Display
Market USA
Applicability
YEAR(S)
MODEL(S)
2023
bZ4X
ADDITIONAL INFORMATION
Introduction
Some 2023 model year bZ4X vehicles may exhibit a condition in which the maintenance reminder
messages (Figure 1) do not display on the multi-information display (MID) in the combination
meter at scheduled maintenance intervals. The combination meter ECU has been updated to
address this condition. Follow the Repair Procedure in this bulletin to reprogram the combination
meter ECU.
Figure 1. Maintenance Reminder Messages on MID in Combination Meter Assembly
1
1
1
Maintenance Reminder Message
NOTE
When the condition occurs, maintenance messages do not display on the combination meter.
© 2023 Toyota Motor Sales, USA
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T-SB-0019-23
April 24, 2023
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Lack of Maintenance Reminder in MID
Table of Contents

Warranty Information ...............................................................................................................3

Parts Information .....................................................................................................................3

Required Tools & Equipment ...................................................................................................3

Calibration Information.............................................................................................................4

Repair Procedure ....................................................................................................................4
© 2023 Toyota Motor Sales, USA
T-SB-0019-23
April 24, 2023
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Lack of Maintenance Reminder in MID
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
800279
Reprogram the Combination Meter ECU
1.2
83800-#####*
87
74
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect for 36 months
or 36,000 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.
Parts Information
PART NUMBER
PREVIOUS
NEW
83800-42V40
83800-42V41
PART NAME
QTY
Meter Assy, Combination
–
NOTE
The Combination Meter Assembly should NOT be replaced as part of the Repair Procedure.
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool*
DCA-8000P T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVI*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 GTS+ software version 2022.04.004.02 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
© 2023 Toyota Motor Sales, USA
T-SB-0019-23
April 24, 2023
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Lack of Maintenance Reminder in MID
Calibration Information
MODEL
YEAR
MODEL
bZ4X
2023
CALIBRATION ID
CAL ID NUMBER
PREVIOUS
CID 1
8380042V410F
8380042V4110
CID 2
8380042V420A
8380042V420B
CID 3
8380042V430A
NEW
8380042V4111 /
8380042V420C /
8380042V430A
Repair Procedure
1. Confirm the condition exists.
A. Are maintenance reminder messages displayed on the MID in the combination meter at
scheduled maintenance intervals as shown in Figure 1 in the Introduction?
 YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
 NO — Continue to substep B.
B. Confirm the combination meter calibration.
(1) Use Techstream to check the current combination meter ECU Cal ID.
(2) Is the calibration ID of the combination meter listed in Techstream as shown in the
Previous column of the Calibration Information table above?
• YES — Continue to step 2.
•
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Reflash the combination meter ECU.
NOTE
 The battery diagnostic tool 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 battery diagnostic tool, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in T-SB-0134-16, Techstream ECU Flash Reprogramming
Procedure, and T-SB-0107-20, ECU Flash Reprogramming With Security Signature, and
flash the combination meter ECU with the NEW calibration file update.
3. Using Techstream, perform a Health Check to confirm if the combination meter ECU
calibration has been updated and clear ANY stored DTCs.
4. Confirm normal combination meter operation.
© 2023 Toyota Motor Sales, USA