NHTSA ID Number: 10235645
Manufacturer Communication Number: SBW54-093
TSB/Document Date: 2023-05-05
Summary
Freightliner
Service Bulletin for ICU4Me Display Goes Blank After Flashing.
54-093
ICU4Me Display Goes Blank After Flashing
> 4700
4800
4900
> 5700
Western Star
Service Bulletin
6900
47X
49X
57X
General Information
Due to liquid crystal display (LCD) shortages in 2021, ICU4Me instrument clusters received new hardware and
software.
ICU4Me instrument clusters manufactured after September 15, 2021 have new hardware and software, however
the original assembly hardware and software numbers did not change. Because the DiagnosticLink® relies on
the hardware and software numbers to make changes, flashing these ICU4Me instrument clusters resulted in a
blank LCD screen as shown in Fig. 1. New assembly numbers were released on August 22, 2022 to correct this
issue, however due to the assemblies receiving new assembly and software numbers, and not new hardware
numbers, flashing these ICU4Me instrument clusters also resulted in a blank LCD screen.
New assemblies with new hardware and software numbers are available to correct this issue.
1
03/06/2023
f548086
1. Blank LCD Screen
Fig. 1, ICU4Me
Parts List
Original P/N Replacement ICU4Me
A06-93159-104
A06-93159-124
A06-94374-100
A06-94374-120
Current P/N Replacement ICU4Me
A06-96828-104
A06-96828-124
A06-96832-100
A06-96832-120
New P/N Replacement Assembly
A06-96828-304
A06-96828-324
A06-96832-300
A06-96832-320
Table 1, Affected and Replacement ICU4Me
Removal
IMPORTANT: It is necessary to remove the optional telltales from the old ICU4Me and install them on
the replacement ICU4Me. Follow one of the following below options to install the optional telltales in
the replacement ICU4Me:
Western Star Service Bulletin, 04/11/2023
Page 1
54-093
ICU4Me Display Goes Blank After Flashing
Western Star
Service Bulletin
> 4700
4800
4900
> 5700
6900
47X
49X
57X
• OPTION 1 (recommended): Remove both optional telltale holders from the old ICU4Me as
shown in Fig. 2 and install them on the replacement ICU4Me. Make sure to install them in the
exact position and orientation as they were in the old ICU4Me. See Fig. 3. Discard the telltale
holders removed from the replacement ICU4Me.
03/10/2023
f548092
Fig. 2, Telltale Holder Removal
2
3
1
03/10/2023
f548091
1. Optional Telltale
2. Empty Telltale Slot
3. Optional Telltale Holder
Fig. 3, Telltale Holder
• OPTION 2: Remove the optional telltales from both telltale holders on the old ICU4Me and
install them into the telltale holders of the replacement ICU4Me. Make sure to install them in the
exact position and orientation as they were in the old ICU4Me.
1. Park the vehicle on a level surface, shut down the engine, and set the parking brake. Chock the tires.
2. Before removing the ICU4Me, attach a sticker to the driver side door frame indicating the mileage from the
driver display, and the date that the ICU4Me is being replaced.
Page 2
Western Star Service Bulletin, 04/11/2023
54-093
ICU4Me Display Goes Blank After Flashing
> 4700
4800
4900
> 5700
Western Star
Service Bulletin
6900
47X
49X
57X
3. Remove the ICU4Me. For instructions, see Section 54.15, Subject 100 of the Western Star Workshop
Manual.
1
03/10/2023
f548087
1. Optional Telltale Holders
Fig. 4, ICU4Me Assembly
Installation
1. Install the ICU4Me. For instructions, see Section 54.15, Subject 100 of the Western Star Workshop
Manual.
NOTE: If a replacement of ICU4Me is being installed, or if the ICU4Me parameters need to be
verified or updated, the vehicle will need to be connected to DiagnosticLink and the ICU4Me
programmed by selecting the ’Program Device’ tab.
2. Flash the new ICU4Me. For instructions to flash the ECU, see Western Star Service Bulletin 54-070,
Programming Chassis Electronic Control Units (ECUs) With DiagnosticLink.
Warranty
This is an informational bulletin only. Warranty does not apply.
Western Star Service Bulletin, 04/11/2023
Page 3
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TSB/Document ID: SBW54-093
Replacement Service Bulletin Number:
MFR Communication Date: 2023-04-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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