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Service bulletin 8V491

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10236418
Published by NHTSA2023-05-22
Manufacturer's number8V491
Manufacturer's date2019-02-01
NHTSA componentELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

ICUC Bulb check function.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Instrument cluster

Vehicles listed
FREIGHTLINER CASCADIA2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V1370002019-02-27. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
18V4910002018-07-20. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
543022023-05-22. Service bulletin. ABS Light illuminating in the ICU.
TechTalk77092020-10-01. Service bulletin. Tech talk discussion on inaccurate reading DEF gauge.
FL7802019-04-08. Service bulletin. Recall Bulletin- Cascadia ICUC Bulb Check Function
sb542152018-06-18. Service bulletin. sb54215 ICU4M Missing VORAD Information or Reporting Fault SA 42 SPN FMI 07
sb54212018-06-18. Service bulletin. sb54215 54-215 - ICU4M Missing VORAD Information or Reporting Fault SA 42 SPN 639 FMI 07
SB-54-2152009-10-07. Service bulletin. FREIGHTLINER: ON SOME VEHICLES EQUIPPED WITH THE ICU4M INSTRUMENT PANEL AND THE EATON VORAD SYSTEM WITH AN INTEGRATED ICU DISPLAY, THE DRIVER MESSAGE CENTER MAY NOT DISPLAY AN VORAD INFORMATION, EVEN THOUGH VORAD IS FUNCTIONING. THIS IS BECAUSE THE ICU4M IS NOT RECOGNIZING THE VORAD SYSTEM, DUE TO EITHER SOFTWARE CODING SEQUENCES DURING PRODUCTION, OR AN AFTERMARKET INSTALLATION OF THE VORAD OPTION. NO MODEL YEARS LISTED. *PE UPDATED 1/13/10. *PE UPDATED 12/23/14. *PE